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64results about How to "Increase power ratio" patented technology
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Hybrid energy off highway vehicle load control system and method
InactiveUS7137344B2Increase power ratioImproved transient operating responseAuxillary drivesPlural diverse prime-mover propulsion mountingControl systemControl circuit
A system and method for managing electrical power generated by an engine for use in connection with operating a hybrid energy off highway vehicle load control system. A load control circuit determines a current operating condition of the Off Highway Vehicle, and determines a corresponding target operating condition of the Off Highway Vehicle The load control system determines a difference between the current operating condition and a target operating condition to identify transients. The load control system delivers power from the power source to a energy storage for an initial period after a transient condition is identified and then delivers power from the power source to source to the traction motors to propel the Off Highway Vehicle. The load control system also retrieves to power from the energy storage to assist in propelling the Off Highway Vehicle.
Owner:GENERAL ELECTRIC CO
Hybrid energy off highway vehicle load control system and method
InactiveUS20050039630A1Increase power ratioImproved transient operating responseAuxillary drivesPlural diverse prime-mover propulsion mountingAutomotive engineeringTraction motor
A system and method for managing electrical power generated by an engine for use in connection with operating a hybrid energy off highway vehicle load control system. A load control circuit determines a current operating condition of the Off Highway Vehicle, and determines a corresponding target operating condition of the Off Highway Vehicle The load control system determines a difference between the current operating condition and a target operating condition to identify transients. The load control system delivers power from the power source to a energy storage for an initial period after a transient condition is identified and then delivers power from the power source to source to the traction motors to propel the Off Highway Vehicle. The load control system also retrieves to power from the energy storage to assist in propelling the Off Highway Vehicle.
Owner:GENERAL ELECTRIC CO
Light-weight high-power electrical machine
InactiveUS6891302B1High energyMotor/generator magnetic lossHybrid vehiclesWindingsAlternatorElectrical polarity
A brushless electrical machine, usable as a motor, generator, or alternator, has a rotor that is comprised of a rim portion and a substantially open center portion. The rim portion has a partially hollow core in which a stationary field coil is supported. Current to the field coil generates magnetic flux that circulates in a poloidal flux path in the rim, crossing a single magnetic air gap formed by the rim. Protrusions in the rim located around the circumference form poles all having the same polarity. As the rotor rotates, the flux exiting the poles passes through multiple stationary armature windings around the circumference that are located in the single air gap. An AC voltage is induced in the armature windings from rotation.
Owner:REVOLUTION ELECTRIC MOTOR
Display device
InactiveUS20160091757A1Reduce power consumptionIncrease power ratioNon-linear opticsLiquid-crystal displayDisplay device
The display device includes: an array substrate having an in-cell polarizing layer and a color layer; a counter substrate; a liquid crystal layer; a white light source; and a polarizing plate placed on the counter substrate on its one side opposite to a side on which the liquid crystal layer is provided. The color layer includes a red color layer, a green color layer and a blue color layer. The red color layer includes a red color filter and a red wavelength conversion layer which is located on its one side closer to the white light source than the red color filter. The green color layer includes a green color filter and a green wavelength conversion layer which is located on its one side closer to the white light source than the green color filter. The blue color layer includes a blue color filter.
Owner:JAPAN DISPLAY INC
Modulation and demodulation apparatuses and methods for wired/wireless communication system
InactiveUS20090175365A1Improve power efficiencyLow efficiencyEnergy efficient ICTEqualisersEngineeringIntensity modulation
Wired / wireless optical signal modulation and demodulation apparatuses and methods using an intensity modulation / direct detection method and an orthogonal frequency division multiplexing (OFDM) method are provided. A unipolar OFDM symbol frame is generated by determining the polarity of each of a plurality of sub-frames of a bipolar OFDM symbol frame which comprises both a plurality of positive pulses and a plurality of negative pulses, inverting the polarity of the sub-frames which are determined to be negative, delaying one of the positive sub-frame and a positive sub-frame obtained through the inversion by the duration of the sub-frames, and multiplexing the result of the delaying and whichever of the positive sub-frame and the positive sub-frame obtained through the inversion is not the result of the delaying. The unipolar OFDM symbol frame can guarantee high power amplification efficiency and high transmission power efficiency, and is robust against a multi-path channel environment. Therefore, the unipolar OFDM symbol frame can be used in various optical signal modulation / demodulation methods for wireless indoor broadband optical transmission devices, wired broadband optical transmission devices using multi-mode optical fibers, and radio-over-fiber devices which transmit baseband analog signals as optical signals.
Owner:ELECTRONICS & TELECOMM RES INST
Encoding device and method and decoding device and method
InactiveUS6765507B2Improve performanceImprove accuracyError correction/detection using convolutional codesOther decoding techniquesData transmissionComputer science
An encoding device in a data transmission / reception system includes a first convolutional encoder that encodes an outer code, an interleaver that permutes input data, a second convolutional encoder that encodes an inner code, and a muti-level modulation mapping circuit that performs signal-point mapping based on eight-phase shift keying. When the encoding device uses the second convolutional encoder having two or more memories, the first convolutional encoder uses, as the outer code, a code with a minimum output distance greater than the maximum input distance at which the minimum-distance inner code is generated.
Owner:SONY CORP
Discrete multitone modem initialization system and method
InactiveUS6925112B1Maximize available data communication rateMaximize accuracyMulti-frequency code systemsTransmitter/receiver shaping networksModem deviceChannel impulse response
The present invention discloses an improved initialization method for modem communication wherein the timing offset required for synchronization is estimated utilizing an entire received DMT frame and the channel impulse response is estimated utilizing the pilot tones received within the same DMT frames utilized for synchronization.
Owner:JABIL CIRCUIT INC
Apparatus and Methods for Low PAPR Transmission in MIMO Systems
ActiveUS20170134202A1Increase costIncrease power ratioSpatial transmit diversityMulti-frequency code systemsPrecodingOut of band radiation
System and method embodiments are provided herein for achieving low peak-to-average power ratio (PAPR) signals in multiple-input and multiple-output (MIMO) systems, including Massive MIMO (M-MIMO) systems. The embodiments include two schemes to reduce the PAPR in the transmitted signals. In a first scheme, the signals are precoded, at a BS or UE, to offload a signal from one antenna to another antenna to achieve PAPR reduction. The precoding is done with some penalty in terms of signal gain. In a second scheme, the signal is clipped and the clipped portion is further projected on the MIMO antennas to compensate for the error caused by clipping. Out-of-band radiation is also removed in this scheme.
Owner:HUAWEI TECH CO LTD
Communication device and method of multipath compensation for digital predistortion linearization
ActiveUS8982995B1Improve linearityImprove efficiencySecret communicationTransmitter/receiver shaping networksCommunication deviceLinearization
A method of multipath compensation for digital pre-distortion (DPD) linearization suppresses linear distortion caused by reflected signals and distortion in transmitting and receiving paths. Reflection suppression suppresses effects of the linear distortion on the transmitting and receiving paths.
Owner:MICROELECTRONICS TECH INC
Digital Power Encoder for Direct Digital-RF Transmitter
ActiveUS20150146773A1Improve power coding efficiencyIncrease power ratioPower amplifiersAmplifier modifications to raise efficiencyFrequency changerDigital up converter
A transmitter includes a first digital up-converter for converting data to an intermediate frequency (IF) signal, a pulse width modulator (PWM) for encoding the IF signal to an IF pulse train, a second digital up-converter for converting the IF pulse train to a radio frequency (RF) pulse train, a power amplifier for amplifying the RF pulse train; and a filter for reconstructing a RF analog signal from the amplified RF pulse train.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Gysel power distribution filter with high power distribution ratio
ActiveCN103700917AHigh power ratioIncrease power ratioCoupling devicesPhase differenceImpedance transformer
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of gallium arsenide thin-film multijunction stacked solar cells
ActiveCN103000759AImprove uniformityImprove reliabilityRenewable energy productsSemiconductor devicesIntermediate cellLow cost substrate
The invention relates to a preparation method of gallium arsenide thin-film multijunction stacked solar cells. The preparation method is characterized by including the steps of firstly, allowing for reverse growth of an epitaxial layer to prepare a GaAs three-junction solar cell; secondly, bonding the cell prepared in the step 1 to a Si substrate; thirdly, stripping a Ge substrate; fourthly, adhering a low-cost substrate; and fifthly, stripping the Si substrate. The preparation method allows for epitaxial growth of a top cell and an intermediate cell prior to growth of a bottom cell, and accordingly the lattice subjected to epitaxial growth firstly is guaranteed to match with perfect epitaxial growth of the top cell and the intermediate cell; doping uniformity and film reliability in large-area epitaxial thin films are increased, and photoelectric conversion efficiency is further improved; by the use of the low-cost support substrate lower than Ge in specific weight, the weight of the cells is reduced, the power ratio of the solar cells is increased, the cost of the cells is reduced effectively, and application prospect of the III-V compound solar cells is improved greatly.
Owner:TIANJIN LANTIAN SOLAR TECH +2
Soft driver for assisting extension and abduction of thumb of human hand
ActiveCN108371609AImprove securityIncrease power ratioChiropractic devicesPneumatic pressureEngineering
The invention discloses a soft driver for assisting extension and abduction of the thumb of a human hand and a pair of gloves. The soft driver comprises an inner-layer silicone tube, an outer-layer silicone tube, Kevlar fiber wires and two sections of fiberglass cloth, wherein the front end of the inner-layer silicone tube is sealed, and an opening is formed in the rear end and is used for connecting a pneumatic or hydraulic driving device; one Kevlar fiber wire is wound on the part, which corresponds to a metacarpal bone of the thumb, of the outer wall of the inner-layer silicone tube in a single-screw way, and the other Kevlar fiber wire is wound on the part, which corresponds to a phalanx of the thumb, of the outer wall of the inner-layer silicone tube in a double-screw way; the two sections of fiberglass cloth are both adhered to the side, which departs from fingers, of the inner-layer silicone tube, and positions of the two sections of fiberglass cloth respectively correspond to aconnecting joint of the metacarpal bone and a proximal phalanx of the thumb and a connecting joint of the proximal phalanx and a distal phalanx; the Kevlar fiber wires and the fiberglass cloth are fixed to the outer wall of the inner-layer silicone tube by the outer-layer silicone tube. By carrying the soft driver on the gloves, extension and abduction rehabilitation training of the thumb can beassisted.
Owner:HUAZHONG UNIV OF SCI & TECH +1
Power amplifier for amplifying radio frequency signal
ActiveUS20160142020A1Tolerate more output power back offsMore compact designHigh frequency amplifiersPower amplifiersPower modeAudio power amplifier
Power amplifiers for amplifying a radio frequency signal are provided. The power amplifier may include an envelope tracking power supply, a carrier amplifier coupled with the envelope tracking power supply and configured to amplify the radio frequency signal, an input matching network configured to split the amplified radio frequency signal from the carrier amplifier such that one part of the amplified radio frequency signal passes along a peak amplifier path and another part of the amplified radio frequency signal passes along an impedance transformer path, a peak amplifier coupled with the envelope tracking power supply and configured to amplify the one part of the amplified radio frequency signal from the input matching network, an impedance transformer configured to perform impedance transformation on the other part of the amplified radio frequency signal from the input matching network, an output matching network configured to combine the output of the peak amplifier and the impedance transformer, wherein the peak amplifier is configured to be switched off in a lower power mode and switched on in a high power mode based at least in part on an input power level of the radio frequency signal. With the claimed solutions, more powerful and efficient power amplifiers that are capable of operating over broader frequency ranges may be achieved.
Owner:MICROSOFT TECH LICENSING LLC
Space-time MIMO wireless system based on feedback optimum weight design
InactiveUS20090080558A1Improve spectral efficiencyIncreasing system coverageDiversity/multi-antenna systemsError prevention/detection by diversity receptionClosed loopHardware complexity
A FOW-based 2-by-2 space-time MIMO wireless system based on Alamouti's Space-Time block code with a feedback optimum weight (FOW) technique is provided, including a MIMO transmitter, a 2-by-2 MIMO channel, two FOW-based MIMO receivers, an optimum weight vector module, a Bayes decision algorithm module, a coherent combining unit, and a maximum likelihood detector (MLD). The FOW-based 2-by-2 space-time MIMO wireless system of the present invention uses the Bayes decision algorithm to determine the optimum weights at the receiver which multiplies the transmitted output signals at spatial antennas via up-link Fast Channel Feedback (i.e. closed-loop MIMO) and also the corresponding receiving signals. In addition, the present invention includes a Scheduler design to arrange these weight elements in accordance with space-time constellation signals, which allows linear processing using Alamouti's 2-branch maximum likelihood detection without increasing the hardware complexity.
Owner:AN JOHN F
Microelectronic thermal valve
ActiveUS20170159847A1Enhanced thrust to power ratioShort response timeCosmonautic environmental control arrangementValve arrangementsThroatCooling effect
A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
Owner:PURDUE RES FOUND INC
Blind-adaptive combined suppression method for satellite navigation cheating jamming and suppressing jamming
ActiveCN105629266AIncrease power ratioSimple methodSatellite radio beaconingComputer moduleRadio frequency signal
The invention discloses a blind-adaptive combined suppression method for satellite navigation cheating jamming and suppressing jamming. The method comprises: down conversion is carried out on a radio frequency signal received by an array and the processed signal is converted into a digital intermediate-frequency signal; an opposite angle loading value is selected and negative opposite angle loading is carried out on a covariance matrix of the signal received by the array after A / D conversion to obtain a new covariance matrix; and then with a minimum power algorithm, a beam pattern with nulls formed adaptively in incoming wave directions of suppressing jamming and cheating jamming is obtained. According to the invention, a null can be formed in an incoming wave direction of the jamming adaptively under the circumstances that the numbers of the suppressing jamming and cheating jamming as well as incoming wave directions of the suppressing jamming and cheating jamming are not obtained; and an objective of simultaneous suppression of two kinds of jamming can be achieved. The method can be realized simply and an independent anti-interference module can be formed and be embedded into a received.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Single carrier modulation for uplink transmissions
InactiveUS20150124750A1Reduce power consumptionExtend battery lifeFrequency-division multiplex detailsModulated-carrier systemsWireless mesh networkUplink transmission
A method includes generating, at a source device, a data packet for transmission via an Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless network. The method also includes transmitting at least a portion of the data packet to a destination device according to a single carrier modulation scheme.
Owner:QUALCOMM INC
Software driver for assisting four-finger stretching of human hand
The invention discloses a software driver for assisting four-finger stretching of a human hand. The software driver includes an inner layer silicone tube, an outer layer silicone tube, a Kevlar fiberline and three-section glass fiber cloths. The front end of the inner layer silicone tube is closed, the rear end of the inner layer silicone tube is provided with an opening which is used for being connected with an air pressure or hydraulic driving device, the Kevlar fiber line is wound around a portion of the outer wall of the inner layer silicone tube corresponding to four-finger phalanges ina double helix mode, the three-section glass fiber cloths are attached to the side of the inner layer silicone tube deviated from the fingers, the positions respectively correspond to a connecting joint for the four-finger phalanges and proximal phalanges, a connecting joint for the proximal phalanges and intermediate phalanges and a connecting joint for the intermediate phalanges and distal phalanges; the outer layer silicone tube sleeves the inner layer silicone tube and is closely combined with the inner layer silicone tube, and the Kevlar fiber line and the glass fiber cloths are fixed onthe outer wall of the inner layer silicone tube. By loading the drive, a glove achieves simulation of four-finger stretching exercise and assists the four fingers in stretching training.
Owner:HUAZHONG UNIV OF SCI & TECH +1
Modulation and demodulation apparatuses and methods for wired/wireless communication system
InactiveUS7961798B2Low efficiencyLow ratioEnergy efficient ICTTime-division optical multiplex systemsIntensity modulationBaseband
Wired / wireless optical signal modulation and demodulation apparatuses and methods using an intensity modulation / direct detection method and an orthogonal frequency division multiplexing (OFDM) method are provided. A unipolar OFDM symbol frame is generated by determining the polarity of each of a plurality of sub-frames of a bipolar OFDM symbol frame which comprises both a plurality of positive pulses and a plurality of negative pulses, inverting the polarity of the sub-frames which are determined to be negative, delaying one of the positive sub-frame and a positive sub-frame obtained through the inversion by the duration of the sub-frames, and multiplexing the result of the delaying and whichever of the positive sub-frame and the positive sub-frame obtained through the inversion is not the result of the delaying. The unipolar OFDM symbol frame can guarantee high power amplification efficiency and high transmission power efficiency, and is robust against a multi-path channel environment. Therefore, the unipolar OFDM symbol frame can be used in various optical signal modulation / demodulation methods for wireless indoor broadband optical transmission devices, wired broadband optical transmission devices using multi-mode optical fibers, and radio-over-fiber devices which transmit baseband analog signals as optical signals.
Owner:ELECTRONICS & TELECOMM RES INST
Fuel cell system and control method therefor
ActiveUS20150349360A1Prevent freezingIncrease power ratioFuel cell auxillariesMotive system fuel cellsFreezing Point TemperatureProduced water
A fuel cell system includes an auxiliary machine electrically connected to a fuel cell, the auxiliary machine being driven by power of the fuel cell, a heater electrically connected to the fuel cell, the heater being configured to heat cooling water supplied to the fuel cell, and a warm-up control unit configured to warm up the fuel cell itself by the supply of power to the auxiliary machine and the heater during start-up of the fuel cell below freezing point. The warm-up control unit includes a water amount computation unit configured to compute a produced water amount on the basis of a degree of wetness and a temperature of the fuel cell and a generated power of the fuel cell during warm-up, the produced water amount being a water amount produced in an electrolyte membrane until the temperature of the fuel cell increases to a freezing point temperature, and an anti-freezing control unit configured to increase a power ratio of power to the heater in regards to the auxiliary machine during the warm-up when the computed produced water amount is determined to be larger than a threshold value.
Owner:NISSAN MOTOR CO LTD
Shadow mask assemblies and reusing methods of shadow mask assemblies thereof
ActiveUS20180293946A1Speed up circulationSimple structureStatic indicating devicesTerminal voltageVoltage regulation
The present disclosure discloses a backlight control circuit for adjusting a current of an LED module of an electronic device including a driving chip having a feedback terminal and a reference voltage terminal, a feedback voltage regulating unit, and a power supply regulating unit; the feedback voltage regulating unit is also connected to the 2D / 3D signal terminal, the feedback terminal voltage is controlled so that the feedback terminal voltage of the feedback terminal of the driving chip is lower than the reference voltage of the reference voltage terminal when receiving the three-dimensional signal generated at the 2D / 3D signal terminal. The present application also provides an electronic device. With the scheme of the present application, the current of the LED module can be increased when the electronic device is in the three-dimensional mode.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
Digital power encoder for direct digital-RF transmitter
ActiveUS8953670B1Improve power coding efficiencyIncrease power ratioPower amplifiersAmplifier modifications to raise efficiencyFrequency changerIntermediate frequency
A transmitter includes a first digital up-converter for converting data to an intermediate frequency (IF) signal, a pulse width modulator (PWM) for encoding the IF signal to an IF pulse train, a second digital up-converter for converting the IF pulse train to a radio frequency (RF) pulse train, a power amplifier for amplifying the RF pulse train; and a filter for reconstructing a RF analog signal from the amplified RF pulse train.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Monolithic integrated white light diode
InactiveCN1933198AImprove luminous efficiencyIncrease luminous powerSemiconductor devicesPhotonic crystalContact layer
This invention relates to a single-chip integrated white light LED with type-P electrode and type-N electrode on the surface, a distributive Bragg reflector, a substrate, a buffer layer, a first cladding, a first active region, a first upper cladding, a photon crystal layer, a second lower cladding, a second active region, a second upper cladding, a P type cladding and a P type ohm contact layer are set upwards from the bottom in it, in which, a first optical feedback cavity is composed of the distributive Bragg reflector and the top surface of the single-chip integrated white light LED, a second cavity is composed of the photon crystal layer and the top surface of the single-chip integrated white LED, lights emitted by the two active regions are compensated mutually, so it can emit white light directly not needing light conversion of fluorescent powder.
Owner:HUAZHONG UNIV OF SCI & TECH
Hybrid vehicle and method of controlling hybrid vehicle
ActiveUS20190092185A1Increase power ratioImprove storage rateHybrid vehiclesInstruments for road network navigationCharge controlHybrid vehicle
An electronic control unit is configured to continue execution of the charge control until the hybrid vehicle passes a branch point between the congestion go-through route and the congestion avoidance route, when the electronic control unit changes the scheduled traveling route from a congestion go-through route including the congestion zone, to a congestion avoidance route for avoiding the congestion zone, during execution of the charge control.
Owner:TOYOTA JIDOSHA KK
Transmitter
InactiveUS20150263768A1Increase power ratioPower amplifiersSecret communicationDigital transmitterVIT signals
Owner:NEC CORP
Hydraulic driving device for large reel type sprinkler
ActiveCN109185242AIncrease power ratioSimple mechanical structureServomotor componentsServomotorsThrottleHydraulic pump
The invention discloses a hydraulic driving device for a large reel type sprinkler. The driving mechanism comprises a hydraulic motor and a hydraulic system, wherein the hydraulic motor is arranged ona reel support frame; an output shaft of the hydraulic motor is connected to a reel shaft through a coupling; the hydraulic system comprises a hydraulic pump, a hydraulic valve block and a hydraulicpump driving device; the hydraulic valve block is fixed to a vehicle body; a three-position four-way directional control valve, a proportional throttle valve, a one-way valve and a two-position two-way directional control valve are arranged on the hydraulic valve block; the hydraulic pump enables hydraulic oil in an oil tank to sequentially pass oil inlets of the proportional throttle valve and the three-position four-way directional control valve and enter the hydraulic motor; return oil of the hydraulic motor sequentially passes an oil return hole of the three-position four-way directional control valve and the one-way valve and returns to the oil tank; the two-position two-way directional control valve is connected in parallel to an oil line between an oil outlet of the proportional throttle valve and the oil inlet of the three-position four-way directional control valve; and an oil outlet of the two-position two-way directional control valve communicates with the oil tank. The hydraulic driving device can supply relatively large reel driving force, can also accurately detect the recovery speed of PE pipes and meanwhile is simple in structure and low in failure rate.
Owner:CHINA UNIV OF MINING & TECH +1
Pump for conveying a fluid
ActiveUS20210088056A1Operational safety is enhancedReduces efficiency of pumpPump componentsPump installationsImpellerEngineering
A pump for conveying a fluid includes a stationary housing, an impeller conveying the fluid from a low pressure region to a high pressure region, a shaft to rotate the impeller about an axial direction, and a separation device to restrict a flow of the fluid from the high pressure region to the low pressure region. The separation device includes a rotary part connected to the shaft, and a stationary part stationary with respect to the housing. The rotary and stationary parts face each other and delimit a gap between the stationary part and the rotary part. The gap is arranged between the high and low pressure regions. A recess is disposed in the stationary part or the rotary part, the recess including a bottom, and a non-metallic insert is disposed in the recess. A relief channel enables fluid communication between the bottom and the low pressure region.
Owner:SULZER MANAGEMENT AG
Microelectronic thermal valve
ActiveUS10995879B2Short response timeIncrease power ratioCosmonautic environmental control arrangementValve arrangementsCooling effectVALVE PORT
A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
Owner:PURDUE RES FOUND INC
Subcarrier time offsets for improved peak-to-average power of a transmitter
ActiveUS7313188B2Reduce peak-to-average power of transmitterIncrease power ratioSecret communicationMulti-frequency code systemsData streamCarrier signal
A system, wireless device (102) and method reduce the peak-to-average power of a transmitter by creating at least two sampled carrier data streams, running each carrier through a separate delay block, mixing each carrier over in frequency an appropriate amount, resulting in at least two frequency division multiplexed signals, and combining the at least two frequency division multiplexed signals together. The four sampled carrier data streams may each have a bandwidth of 25 kHz. Each separate delay block is less than 20% of its corresponding symbol time. The transmitter may be used to transmit wideband integrated digitally enhanced network (WiDEN) signals.
Owner:GOOGLE TECH HLDG LLC
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