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122 results about "Bandwidth compression" patented technology
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In telecommunication, the term bandwidth compression has the following meanings: The reduction of the bandwidth needed to transmit a given amount of data in a given time. The reduction of the time needed to transmit a given amount of data in a given bandwidth. Note: Bandwidth compression implies a reduction in normal bandwidth of an information-carrying signal without reducing the information content of the signal. This can be accomplished with data compression techniques.
Binaural rendering using subband filters
InactiveUS20080025519A1Efficient implementationComputational complexity is reducedSpeech analysisStereophonic systemsPhase correctionFrequency spectrum
Transfer functions like Head Related Transfer Functions (HRTF) needed for binaural rendering are implemented efficiently by a subband-domain filter structure. In one implementation, amplitude, fractional-sample delay and phase-correction filters are arranged in cascade with one another and applied to subband signals that represent spectral content of an audio signal in frequency subbands. Other filter structures are also disclosed. These filter structures may be used advantageously in a variety of signal processing applications. A few examples of audio applications include signal bandwidth compression, loudness equalization, room acoustics correction and assisted listening for individuals with hearing impairments.
Owner:DOLBY LAB LICENSING CORP
Pulse amplitude modulated transmission scheme for optical channels with soft decision decoding
InactiveUS7155134B2Dc level restoring means or bias distort correctionLine balance variation compensationCommunications systemBandwidth compression
An amplitude modulated optical communication system and method are disclosed that achieve bandwidth compression by making use of an n level amplitude modulation scheme in one or more frequency bands. A soft decision decoder is disclosed that provides at least two soft slicing levels between each signal level in the multiple level transmission scheme to define an “uncertainty” region therebetween. The soft slicing levels are used to evaluate the reliability of a given bit assignment. In addition to assigning a digital value based on the received signal level, one or more soft bits are assigned indicating a “reliability” measure of the output code.
Owner:AVAGO TECH INT SALES PTE LTD
Ultra-slow down and storage of light pulses, and altering of pulse spectrum
Light pulses can be stopped and stored coherently, with an all-optical process that involves an adiabatic and reversible pulse bandwidth compression occurring entirely in the optical domain. Such a process overcomes the fundamental bandwidth-delay constraint in optics, and can generate arbitrarily small group velocities for light pulses with a given bandwidth, without the use of any coherent or resonant light-matter interactions. This is accomplished only by small refractive index modulations performed at moderate speeds and has applications ranging from quantum communications and computing to coherent all-optical memory devices. A complete time reversal and / or temporal / spectral compression and expansion operation on any electromagnetic field is accomplished using only small refractive index modulations and linear optical elements. This process does not require any nonlinear multi-photon processes such as four-wave mixing and thus can be implemented using on-chip tunable microcavity complexes in photonic crystals. The tuning process requires only small refractive index modulations, and moderate modulation speeds without requiring any high-speed electronic sampling.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Communication system and alignment method of transcoder
ActiveUS7181209B2Service degradationSimple procedureNetwork traffic/resource managementMultiplex communicationCommunications systemTranscoder free operation
When a terminal is moved to an area covered by a different switching node RNC of a radio access network, degradation of speech quality is prevented by returning a transcoder insertion connection to a transcoder-free-operation connection. When the terminal is moved and the switching node RNC of the radio access network is changed, a relocation is performed by inserting the transcoder, re-confirmation of parameter information of a bandwidth-compression coding system is requested for a local side switching node RNC and a remote side switching node RNC and, when the transcoder can be bypassed according to the confirmation, the transcoder is removed to return to the transcoder-free-operation connection mode.
Owner:NEC CORP
Communication system and alignment method of transcoder
InactiveUS20070123196A1Simple procedureImprove sound qualityNetwork traffic/resource managementMultiplex communicationCommunications systemTranscoder free operation
When a terminal is moved to an area covered by a different switching node RNC of a radio access network, degradation of speech quality is prevented by returning a transcoder insertion connection to a transcoder-free-operation connection. When the terminal is moved and the switching node RNC of the radio access network is changed, a relocation is performed by inserting the transcoder, re-confirmation of parameter information of a bandwidth-compression coding system is requested for a local side switching node RNC and a remote side switching node RNC and, when the transcoder can be bypassed according to the confirmation, the transcoder is removed to return to the transcoder-free-operation connection mode.
Owner:NEC CORP
Software configurable distributed antenna system and method for bandwidth compression and transport of signals in noncontiguous frequency blocks
ActiveUS8724664B2Efficient transportLow data rateTime-division multiplexElectromagnetic transmissionDistributed antenna systemCarrier signal
A method for transporting communications signals includes receiving an analog IF signal at a first unit. The analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth. The analog IF signal is converted to a digitally sampled IF signal having the first carrier located in a first Nyquist zone, the second carrier located in a second Nyquist zone, an image of the first carrier located in a third Nyquist zone, and an image of the second carrier located in the third Nyquist zone. The image of the first carrier and the image of the second carrier is transmitted from the first unit to a second unit, where the image of the first carrier and the image of the second carrier is then converted to the analog IF signal.
Owner:DALI SYST LTD
Software configurable distributed antenna system and method for bandwidth compression and transport of signals in noncontiguous frequency blocks
ActiveUS20140010168A1Efficient transportLow data rateWireless commuication servicesTransmissionDistributed antenna systemCarrier signal
A method for transporting communications signals includes receiving an analog IF signal at a first unit. The analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth. The analog IF signal is converted to a digitally sampled IF signal having the first carrier located in a first Nyquist zone, the second carrier located in a second Nyquist zone, an image of the first carrier located in a third Nyquist zone, and an image of the second carrier located in the third Nyquist zone. The image of the first carrier and the image of the second carrier is transmitted from the first unit to a second unit, where the image of the first carrier and the image of the second carrier is then converted to the analog IF signal.
Owner:DALI SYST LTD
Bandwidth compression for neural network systems
ActiveUS20190373264A1Increase power consumptionSignificant burdenCode conversionDigital video signal modificationNeural network systemAlgorithm
Owner:QUALCOMM INC
Memory controllers employing memory capacity and/or bandwidth compression with next read address prefetching, and related processor-based systems and methods
InactiveUS20150339237A1Increase memory capacityReduce bandwidth consumptionMemory architecture accessing/allocationMemory adressing/allocation/relocationBandwidth compressionMemory controller
Memory controllers employing memory capacity and / or bandwidth compression with next read address prefetching, and related processor-based systems and methods are disclosed. In certain aspects, memory controllers are employed that can provide memory capacity compression. In certain aspects disclosed herein, a next read address prefetching scheme can be used by a memory controller to speculatively prefetch data from system memory at another address beyond the currently accessed address. Thus, when memory data is addressed in the compressed memory, if the next read address is stored in metadata associated with the memory block at the accessed address, the memory data at the next read address can be prefetched by the memory controller to be available in case a subsequent read operation issued by a central processing unit (CPU) has been prefetched by the memory controller.
Owner:QUALCOMM INC
Compressing/decompressing frequency domain signals
InactiveUS20170237831A1Modulated-carrier systemsCode conversionCommunications systemBandwidth compression
Various communication systems may benefit from improved bandwidth compression techniques. For example, certain communication systems may benefit from a radio fronthaul traffic compression on a frequency domain data. A method can include identifying a composite waveform corresponding to a real component and an imaginary component of a frequency domain data at a first device. The method may also include causing a transmission of a value that represents the composite waveform to a second device from the first device.
Owner:NOKIA SOLUTIONS & NETWORKS OY
System for improving speech quality and intelligibility with bandwidth compression/expansion
ActiveUS7813931B2Improve speech clarityIncrease probabilitySpeech analysisFluid pressure measurementSignal qualityFrequency compression
Owner:MALIKIE INNOVATIONS LTD
Flexible reduced bandwidth compressed video decoder
ActiveUS8170107B2Reduce bandwidth consumptionAlter the amount of memory bandwidth reductionColor television with pulse code modulationColor television with bandwidth reductionVideo bitstreamInternal memory
A method of decoding a video bitstream is disclosed. The method generally includes the steps of (A) buffering the video bitstream in a main memory, the video bitstream comprising a first residual block based on a first motion compensated block, the first motion compensated block having been generated by a subpixel motion compensation using an N-tap interpolation on a plurality of first reference samples, (B) copying a first subset of the first reference samples from the main memory to an internal memory, (C) generating a first decode block using the subpixel motion compensation with an M-tap interpolation on the first subset in the internal memory, and (D) reconstructing a first original block by adding the first residual block to the first decode block.
Owner:AVAGO TECH INT SALES PTE LTD
Binaural rendering using subband filters
InactiveCN101401455AEliminate redundant filteringReduce computational complexitySpeech analysisStereophonic systemsPhase correctionRoom acoustics
Transfer functions like Head Related Transfer Functions (HRTF) needed for binaural rendering are implemented efficiently by a subband-domain filter structure. In one implementation, amplitude, fractional-sample delay and phase-correction filters are arranged in cascade with one another and applied to subband signals that represent spectral content of an audio signal in frequency subbands. Other filter structures are also disclosed. These filter structures may be used advantageously in a variety of signal processing applications. A few examples of audio applications include signal bandwidth compression, loudness equalization, room acoustics correction and assisted listening for individuals with hearing impairments.
Owner:DOLBY LAB LICENSING CORP
Bandwidth compressed high-spectral-efficiency multi-carrier communication method
ActiveCN107612863AReduce computational complexityEasy to detectMulti-frequency code systemsOrthogonal multiplexComputation complexityCarrier signal
The invention discloses a bandwidth compressed high-spectral-efficiency multi-carrier communication method, belonging to the field of multi-carrier communication technology. The method comprises the following steps: serially connecting external coding and multi-carrier modulation processing at a transmitter through pseudo-random interleaving, and equalizing to a mode of encoding signals through aserially concatenated Turbo code; performing decoding and interference cancellation at a receiver by using an iterative decoding structure of a serial Turbo code, serially connecting internal decodingprocessing and external decoding processing through pseudo-random interleaving and de-interleaving, and continuously exchanging soft information with each other to achieve iteration, wherein the internal decoding mode performs iterative estimation and cancellation for ICI by using a successive interference cancellation method, the external decoding mode decodes external codes by using a soft input and soft output method, and thus the impact of Gaussian white noises of channels can be resisted. Compared with existing methods, by adopting the method disclosed by the invention, a better detection performance can be obtained by using a lower computation complexity, and meanwhile, a large multi-carrier communication system with more sub-carriers can be adapted.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Providing memory bandwidth compression using adaptive compression in central processing unit (CPU)-based systems
ActiveUS20180074949A1Memory architecture accessing/allocationMemory adressing/allocation/relocationAdaptive compressionBandwidth compression
Providing memory bandwidth compression using adaptive compression in central processing unit (CPU)-based systems is disclosed. In one aspect, a compressed memory controller (CMC) is configured to implement two compression mechanisms: a first compression mechanism for compressing small amounts of data (e.g., a single memory line), and a second compression mechanism for compressing large amounts of data (e.g., multiple associated memory lines). When performing a memory write operation using write data that includes multiple associated memory lines, the CMC compresses each of the memory lines separately using the first compression mechanism, and also compresses the memory lines together using the second compression mechanism. If the result of the second compression is smaller than the result of the first compression, the CMC stores the second compression result in the system memory. Otherwise, the first compression result is stored.
Owner:QUALCOMM INC
Bandwidth compression for shader engine store operations
ActiveUS7886116B1Improve memory performanceLess dataMemory architecture accessing/allocationDigital data processing detailsData compressionComputer architecture
Embodiments of the present invention set forth systems and methods for compressing thread group data written to frame buffer memory to increase overall memory performance. A compression / decompression engine within the frame buffer memory interface includes logic configured to identify situations where the threads of a thread group are writing similar scalar values to memory. Upon recognizing such a situation, the engine is configured to compress the scalar data into a form that allows all of the scalar data to be written to or read from the frame buffer memory in fewer clock cycles than would be required to transmit the data in uncompressed form to or from memory. Consequently, the disclosed systems and methods are able to effectively increase memory performance when executing thread group STORE and LOAD operations.
Owner:NVIDIA CORP
Joint coding and decoding device and method for source channel
InactiveCN101005469ACodec delay is smallSimple structureBaseband system detailsBandwidth compressionComputer science
In the invention, the codec is divided into two parts-encoder and decoder. The encoder comprises: a vector buffer of the inputted message source, an encode index generator; a channel signal outputting unit; a channel signal power and parameter memory; a re-built message source memory; and an encoding channel signal memory. The decoder comprises: a vector buffer of the inputted channel, a decode index generator, a re-built message source outputting unit; a decode channel signal memory and a re-built message source memory. The codec provided can the channel-optimized k-dimension channel signals from L-dimension message source after direct coding so as to implement the bandwidth compression and expansion of message source.
Owner:BEIHANG UNIV
High spectrum efficiency security access method based on dual non-orthogonal characteristics
ActiveCN108882226AImprove performanceImprove bandwidth utilizationCriteria allocationSecurity arrangementMultiplexingAccess method
The invention provides a high spectrum efficiency security access method based on dual non-orthogonal characteristics, which supports secure accesses of more users under the same quantity of carriers,and belongs to the technical field of information and communication. The method is applied to an uplink, and comprises the steps as follows: S1, the J users share N non-orthogonal sub-carriers, and Jis more than N; input signals of the J users are separately subjected to non-orthogonally secure mapping according to a security matrix, and thus multiple accesses are achieved; S2, the J signals after non-orthogonally secure mapping are separately subjected to non-orthogonal multiplexing, and a bandwidth compression factor can be changed in the non-orthogonal multiplexing; S3, the J signals after non-orthogonally secure mapping are overlapped into one signal to be transmitted in a channel; S4, a receiver performs non-orthogonal demultiplexing on the received signal; and S5, the non-orthogonally demultiplexed signal is subjected to non-orthogonally secure demapping according to the security matrix, and thus the estimated values of the input signals of the J users are acquired. According to the method provided by the invention, the performance of secure wireless communication and the bandwidth utilization ratio also can be improved, and meanwhile, the same transmission speed of the every carrier is kept.
Owner:HARBIN INST OF TECH
Bandwidth resource processing method and device
ActiveCN107205280ASolve problems that cannot be effectively utilizedNetwork planningTime domainFrequency spectrum
The invention provides a bandwidth resource processing method and device. The bandwidth resource processing method comprises steps of choosing a suitable LTE standard system bandwidth to match, adopting a PCI screening module and a physical scheduling regulation module to guarantee that an uplink channel and a downlink channel have smallest mapping in a frequency band or fall into the outside of a non-standard bandwidth with a zero limit according to scheduling and resource mapping characteristics of an LTE uplink channel and an LTE downlink channel and a service channel, using an emission power enhancement module to enhance the physical channel power in order to improve channel transmission and obtaining a time domain signal matched with a non-standard bandwidth to emit through an RRU filter. The bandwidth resource processing method and device solve a problem that a limited network spectrum cannot be effectively utilized when a wireless network spectrum is an LTE non-standard bandwidth, realize bandwidth compression emission of the LTE system under a non-standard bandwidth resource and highly effectively use wireless network resource.
Owner:ZTE CORP
Bandwidth reduction system and method
ActiveUS20140078246A1Television conference systemsTwo-way working systemsComputer networkBandwidth compression
A method and computing system for receiving an indication of a first user participating in a videoconference. A determination is made concerning whether bandwidth compression is preferable for the first user of the videoconference. If bandwidth compression is preferable for the first user of the videoconference: an unprocessed video stream associated with the first user is processed to generate a reduced bandwidth video stream, and the reduced bandwidth video stream is provided to a video encoder. Processing the unprocessed video stream includes performing an edge detection procedure on the unprocessed video stream.
Owner:GOOGLE LLC
Ultra-slow down and storage of light pulses, and altering of pulse spectrum
Light pulses can be stopped and stored coherently, with an all-optical process that involves an adiabatic and reversible pulse bandwidth compression occurring entirely in the optical domain. Such a process overcomes the fundamental bandwidth-delay constraint in optics, and can generate arbitrarily small group velocities for light pulses with a given bandwidth, without the use of any coherent or resonant light-matter interactions. This is accomplished only by small refractive index modulations performed at moderate speeds and has applications ranging from quantum communications and computing to coherent all-optical memory devices. A complete time reversal and / or temporal / spectral compression and expansion operation on any electromagnetic field is accomplished using only small refractive index modulations and linear optical elements. This process does not require any nonlinear multi-photon processes such as four-wave mixing and thus can be implemented using on-chip tunable microcavity complexes in photonic crystals. The tuning process requires only small refractive index modulations, and moderate modulation speeds without requiring any high-speed electronic sampling.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Quick signal processing method of OOFDM (optical orthogonal frequency division multiplexing) transceiver
InactiveCN102685065AReduce difficultyReduce manufacturing costMulti-frequency code systemsTransmitter/receiver shaping networksTransceiverCyclic prefix
The invention discloses a quick signal processing method of an OOFDM (optical orthogonal frequency division multiplexing) transceiver. The quick signal processing method comprises the following steps of: sending and receiving signals; and when the signals are sent, performing serial / parallel conversion of the signals, automatic detection pseudo code addition of channels, bandwidth compression encoding, orthogonal multi-subcarrier generation, inverse Fourier transform, signal crest value interception and quantification, cyclic prefix addition and parallel / serial conversion. Transmitted OFDM signals subjected to photoelectric conversion generates digital electric OFDM signals through an analog-to-digital converter (ADC) at a corresponding receiving end, and a signal processing course opposite to that at an emitting end is performed on the synchronized electric OFDM signals to obtain transmission signals. During the signal processing course, the quick signal processing method disclosed by the invention utilizes the characteristics of a hermite symmetric structure to reduce the realization difficulty of the receiving end and the cost, and the quick signal processing method has a relatively strong self-adaptation capability.
Owner:能士智能港四川科技发展有限公司
Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems
ActiveUS7362719B2Improve spectral efficiencyImprove signal-to-noise ratioTwo-way loud-speaking telephone systemsFrequency-division multiplex detailsCrosstalk cancellationInterference (communication)
A method and apparatus are disclosed for canceling cross-talk in a frequency-division multiplexed communication system. The disclosed frequency-division multiplexed communication system employs multiple carriers having overlapping channels and provides an improved cross-talk cancellation mechanism to address the resulting interference. Bandwidth compression is achieved using n level amplitude modulation in each frequency band. An FDM receiver is also disclosed that decomposes the received broadband signal into each of its respective frequency bands and returns the signal to baseband in the analog domain. Analog requirements are relaxed by removing cross-talk from adjacent RF channels, from image bands, and minimizing the performance degradation caused by In-phase and Quadrature-phase (I / Q) phase and gain mismatches in modulators and demodulators. The disclosed transmitter or receiver (or both) can be fabricated on a single integrated circuit.
Owner:AVAGO TECH INT SALES PTE LTD
Communication system and alignment method of transcoder
InactiveUS20070123197A1Simple procedureImprove sound qualityNetwork traffic/resource managementMultiplex communicationCommunications systemTranscoder free operation
When a terminal is moved to an area covered by a different switching node RNC of a radio access network, degradation of speech quality is prevented by returning a transcoder insertion connection to a transcoder-free-operation connection. When the terminal is moved and the switching node RNC of the radio access network is changed, a relocation is performed by inserting the transcoder, re-confirmation of parameter information of a bandwidth-compression coding system is requested for a local side switching node RNC and a remote side switching node RNC and, when the transcoder can be bypassed according to the confirmation, the transcoder is removed to return to the transcoder-free-operation connection mode.
Owner:NEC CORP
Method and apparatus for cross-talk cancellation in frequency division multiplexed transmission systems
InactiveUS20080117805A1Improve spectral efficiencyImprove signal-to-noise ratioFrequency-division multiplex detailsWavelength-division multiplex systemsCommunications systemCarrier signal
A method and apparatus are disclosed for canceling cross-talk in a frequency-division multiplexed communication system. The disclosed frequency-division multiplexed communication system employs multiple carriers having overlapping channels and provides an improved cross-talk cancellation mechanism to address the resulting interference. Bandwidth compression is achieved using n level amplitude modulation in each frequency band. An FDM receiver is also disclosed that decomposes the received broadband signal into each of its respective frequency bands and returns the signal to basehand in the analog domain. Analog requirements are relaxed by removing cross-talk from adjacent R-F channels, from image bands, and minimizing the performance degradation caused by In-phase and Quadrature-phase (I / Q) phase and gain mismatches in modulators and demodulators. The disclosed transmitter or receiver (or both) can be fabricated on a single integrated circuit.
Owner:AVAGO TECH INT SALES PTE LTD
Call admission control method based on multistage degradation
InactiveCN101800941AExcellent new call blocking probabilityHandover Call Drop Probability ExcellentNetwork traffic/resource managementAssess restrictionBandwidth compressionCall Admission Control
The invention provides a call admission control method based on multistage degradation, comprising the following steps: (1) controlling the call admission service by combining adaptive bandwidth and multi-queue strategy; performing step (2) when the residual bandwidth is less than the minimum bandwidth of the current call admission service; and (2) reducing the bandwidth occupied by audio-video broadcast or / and multicast services for the current call admission service to use. In the step (2), the broadcast or multicast services have degradation states in multiple stages; the degradation statein each stage corresponds to a certain proportion of bandwidth reduction; the audio-video broadcast or / and multicast services are degraded to different stages of degradation states gradually; and thebandwidth occupied by the audio-video broadcast or / and multicast services is gradually reduced until the residual bandwidth meets the requirement of the current call admission service. By degrading the audio-video broadcast and multicast services, the method realizes the requirement of admitting more services to the greatest extent under the condition of changeless total bandwidth.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI
All optical network business restoration method based on band width compression
InactiveCN102347862AImprove survivabilityHigh recovery success rateElectromagnetic transmissionData switching networksFrequency spectrumSignal quality
The invention relates to the technical field of a computer network and particularly discloses an all optical network business restoration method based on bandwidth compression, which comprises the following steps of: S1, reducing a bandwidth required for restoring a failure business from two aspects: 1) first compressing a protection bandwidth between channels through a specific restoration route strategy to obtain a restoration route; 2) utilizing the controllable modulation order characteristics of an all optical network to compress the bandwidth required by the failure business self if network resources for the normal restoration of the failure business are insufficient on the restoration route; S2, allocating required frequency spectrum resources for the failure business in the restoration route so as to restore the transmission of the failure business. The invention has the advantages that with the restoration route strategy, the protection bandwidth between the channels can be compressed, the utilization rate of the resources and the protection restoration success rate are improved, and the network survivability is enhanced; with the mode for improving the modulation order, the bandwidth required by the business self can be compressed as far as possible under the condition of ensuring certain signal quality, and the business restoration success rate can be effectively increased.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Bandwidth compression for neural network systems
Owner:QUALCOMM INC
Method for transmitting signals over wired transmission media via compressed bandwidth and its device
ActiveCN101102168AWide range of bandwidthSignal transmission distance is longTime-division multiplexLine-transmissionSignal onBandwidth compression
The invention features the following: compressing the signals to make the signal capable of being transmitted on category 5e twist-pair; namely, the one route of signals on sending end are divided into multi routes of wideband compressed sub-signals which are synchronously transmitted on wired media in multi parallel routes; the receiving end receives each route of signals, and restores it to one route of original signals.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD
System and method for bandwidth compression of frequency and phase modulated signals and suppression of the upper and lower sidebands from the transmission medium
InactiveUS7027505B2Improve fidelityImprove signal-to-noise ratioModulated-carrier systemsFrequency/rate-modulated pulse demodulationBandpass filteringDiscriminator
A system and method for improving radio communication of frequency or phase modulated transmission and reception. Signal transmission is implemented by suppression of the upper and lower sidebands of a narrowband or very narrowband FM / PM signal from the transmission medium such that transmission is limited to the instantaneous frequency varied about the carrier frequency (center frequency). Suppression may be achieved by adding a bandpass filter between the modulator and the power amplifier of the narrowband FM transmitter. Upon receipt of the suppressed sideband signal, the received signal is converted to a first narrowband IF signal, and then the narrowband or very narrowband frequency deviation IF signal is expanded by frequency multiplication to generate a second wideband or very wideband IF signal. A discriminator may be used to convert the frequency-multiplied signal into a low frequency signal or audio signal for further processing. Through sideband suppression, bandwidth requirements are reduced without affecting sound quality and signal-to-noise ratio is improved.
Owner:AL EIDAN ABDULLAH A
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