40results about How to "Fast frequency hopping" patented technology

A method of controlling a low power radio receiver including controlling the radio receiver for a first, relatively short, period of time to detect radio transmissions in a predetermined frequency band, and determining whether to control the radio receiver for a subsequent second relatively longer period of time to receive data from a subsequent radio transmission in the predetermined frequency band.

The invention relates to a frequency agility synthesis method compatible with microwave large band width and mid-frequency small step and a device thereof. The invention is characterized in that direct simulation type frequency synthesis, direct digital frequency synthesis, and DSP(digital signal processor) technology are combined to perform frequency synthesis, so as to make the best of the advantages of the mentioned technologies, avoid technical defects, realize the optimization of all technical indexes of the frequency synthesizer, has a better expandability on the design of frequency band width and at the same time is compatible with large band width microwave frequency agility and mid-frequency small stepping frequency agility signal functions.

The embodiment of the invention discloses a communication method and device and a computer storage medium. The communication method comprises configuring, for a user equipment (UE), the frequency hopping configuration information corresponding to one or more bandwidth parts (BWPs), the frequency hopping configuration information being associated with a frequency hopping pattern employed for frequency hopping on the one or more BWPs; and carrying the frequency hopping configuration information on a BWP switching command or an awakening signal and sending the BWP switching command or the awakening signal to the UE.

The invention relates to a short-wave pre-and-post-selector, which comprises a digital control circuit, transmitting-receiving switching circuits, band switching circuits, frequency hopping filters, a decoder, a broadband low noise amplifier and a receiving protection circuit, wherein the digital control circuit is electrically connected with an external short-wave radio station control unit through a control interface; serial codes sent by the short-wave radio station control unit are received by the digital control circuit and converted into parallel tuning codes respectively used for controlling the frequency hopping filters, the band switching circuits and the transmitting-receiving switching circuits so as to realize transmission on carrier signals different in frequency point and rapidly perform switching on carrier frequencies of useful signals; the transmitting-receiving switching circuits comprise a first transmitting-receiving switching circuit, a second transmitting-receiving switching circuit, a third transmitting-receiving switching circuit and a fourth transmitting-receiving switching circuit; the band switching circuits comprise a first band switching circuit and a second band switching circuit; the frequency hopping filters comprise a first frequency hopping filter and a second frequency hopping filter. The short-wave pre-and-post-selector disclosed by the invention has the advantages of being reasonable in structure, stable and reliable to use, strong in anti-jamming capability, low in cost, simple to control, fast in frequency hopping speed, low in power consumption, small in bottom noise and the like.

The invention belongs to the communication technological field and relates to a multi-carrier direct sequence spread spectrum code division multiple access (MC-DS-CDMA) and FFH (fast frequency hopping)-OFDM (orthogonal frequency division multiplexing)-based multi-carrier spread spectrum technology, in particular, a fast frequency hopping-based multi-carrier spread spectrum method. According to the method, the common features of MC-DS-CDMA and FFH-OFDM are considered, and the weakness of the inexistence of frequency diversity gain of a traditional MC-DS-CDMA is avoided. The fast frequency hopping-based multi-carrier spectrum spreading method is advantageous in fading resistance, interference resistance, code division multiple access and communication confidentiality.

An APP music intelligent lamp capable of light adjustment and toning comprises a mobile phone APP module, a Bluetooth communication module, a digital-to-analog converter, a PWM control module and a LED lamp, the LED lamp is a RGB LED lamp, the mobile phone APP module is in wireless connection with the Bluetooth communication module, the Bluetooth communication module is connected with the digital-to-analog converter, the digital-to-analog converter is connected with the PWM control module, the PWM control module is connected with the LED lamp, the Bluetooth communication module employs the Bluetooth frequency hopping algorithm and the mobile phone APP module to perform data transmission, the Bluetooth frequency hopping algorithm writes in the mobile phone APP and the Bluetooth communication module, and the PWM control module adjusts the color and the brightness of the LED lamp through changing of the duty ratio of the LED lamp. The APP music intelligent lamp capable of light adjustment and toning can directly perform back-calculation of a corresponding duty ratio of a required LED light through inputting corresponding parameters through the algorithm chip and circuit and perform dynamic adjusting of the color and the illumination in the condition of adjusting the duty ratio, the PWM light adjustment is more accurate in light adjustment, faster in color changing, more beautiful in color of light adjustment and more color changing in the light adjustment mode compared to a traditional mode.

The invention discloses a high-quality and fast-frequency-hopping TDD wireless transceiving system. The system comprises a baseband signal processing module, a first frequency synthesis module and a second frequency synthesis module; the transmitting end and the output end of the baseband signal processing module are connected to a transmitting circuit frequency mixer and a receiving circuit frequency mixer respectively; a first radio-frequency switch is arranged between the first frequency synthesis module and the second frequency synthesis module; and the input selection end of the first radio-frequency switch is electrically connected with the first frequency synthesis module and the second frequency synthesis module. The invention relates to the technical field of wireless communication systems, in particular to the high-quality and fast-frequency-hopping TDD wireless transceiving system. While one frequency synthesizer module works, the other frequency synthesizer module can enteranother frequency point working state in advance, and when ready, a path is switched by controlling the radio-frequency switch, thereby achieving the purposes of quickly switching a frequency and stably outputting a local oscillator signal.

The invention relates to a quick configuration method for an LTE (Long Term Evolution) SRS (Sounding Reference Signal) frequency domain position. Fixed frequency band channel sounding can prove a situation as shown by the accompanying drawing during uplink channel sounding at a fixed frequency domain position and a situation that channel sounding through a frequency hopping method is performed through a subprogram A, a subprogram B and a subprogram C. The invention provides a simplified algorithm and the calculation of n1, n2 and n3 is avoided; in the frequency hopping method, the algorithm can also improve the hop frequency of UE (User Equipment) channel sounding and can bring about uplink scheduling gains.

The invention provides an APP smart lamp. The smart lamp includes a cell phone APP module, a Bluetooth communication module, a digital analog converter, a PWM control module and an LED lamp. The cell phone APP module is in wireless connection with the Bluetooth communication module. The Bluetooth communication module is connected with the digital analog converter. The digital analog converter is connected with the PWM control module. The PWM control module is connected with the LED lamp. The Bluetooth communication module outputs signals to the PWM control module via the digital analog converter after receiving control signals of a cell phone APP. The Bluetooth communication module adopts a Bluetooth frequency hopping algorithm for performing data transmission with the cell phone APP module. Frequency bands are divided into a plurality of frequency hopping channels according to the frequency-hopping spread spectrum. In one connection process, a radio transceiver hops on and on from one channel to another according to a specific code sequence. Only a sending party and a receiving party perform communication according to the above rule while other interference source cannot perform interference according to said rule. Therefore, the Bluetooth system is more stable in communication connection, higher in communication rate and more insusceptible to interference and decoding compared with other systems.

The invention relates to an internal self-test system of a short-wave prognosis selector, comprising an FPGA control circuit and a pre/post-selector filter circuit electrically connected with the FPGAcontrol circuit. The FPGA control circuit is electrically connected with a main control unit of an external short-wave radio station through a control interface. The system is characterized in that the self-test system further comprises a self-test signal shaping circuit, a conversion circuit and a self-test signal testing circuit electrically connected with the FPGA control circuit. The internalself-test system of the short-wave prognosis selector of the invention is simple in structure, reasonable in design, small in volume, low in cost, fast in speed, high in reliability, fast in frequency hopping speed, low in power consumption, low in noise, good in frequency selectivity, stable and reliable in operation, and can effectively improve the technical index and electromagnetic compatibility of the short-wave radio station.

Disclosed is an APP music intelligent lamp. The APP music intelligent lamp comprises a music signal collection module, a signal processing module, a mobile phone APP module, a Bluetooth communication module, a digital analog converter, a PWM control module and an LED lamp, wherein the mobile phone APP module is in wireless connection with the Bluetooth communication module; the Bluetooth communication module is connected with the digital analog converter; the digital analog converter is connected with the PWM control module; the PWM control module is connected with the LED lamp; the Bluetooth communication module receives a control signal from a mobile phone APP and then outputs a signal to the PWM control module through the digital analog converter; the Bluetooth communication module and the mobile phone APP module are in data transmission by adopting a Bluetooth frequency hopping algorithm; by adoption of a frequency hopping technology, a frequency band is divided into multiple frequency hopping channels; and in one time of connection. a radio transceiver performs frequency hopping from one channel to another constantly based on a certain code sequence; only the receiving and transmitting sides can communicate according to the rule, and other interference sources cannot generate interference according to the same rule, so that compared with other system, the Bluetooth system is more stable in communication connection, higher in communication speed and is not subjected to interference and cracking easily.

The invention relates to a nine-channel space spectrum super-resolution estimation monitoring and direction-finding mobile station system, which comprises a small double-cone omnidirectional monitoring antenna, a nine-unit direction-finding antenna, an amplifier, a monopole monitoring antenna, a nine-channel signal switching module, a filter combiner, am amplifier module, a nine-channel receiver, a monitoring and direction-finding controller, a DSP (Digital Signal Processor) processing module, an imbedded industrial computer, a GPS (Global Positioning System) antenna, a GPS module, a 3G (3rd Generation) antenna, a 3G router, a power supply module, a remote control unit, an exchanger, and the like. The system has the following advantages: the system achieves remote and automatic monitoring and direction-finding of radio signals; an imbedded computer system is integrally arranged so that the structure is compact and light; a direction-dinging assembly solves the coupling problem between the antenna arrays and prevents coupling and phase between unit antennas from being blurred; the structure is compact and light, and the spanning maintenance is convenient; the grid connection is flexible, and can support different wired/wireless network data transmissions; moreover, collection, compression coding, automatic task monitoring, statistic analysis and abnormal state alarm of wireless signals are realized.

The invention discloses a multimode microwave detection system and method based on a fast frequency hopping technology, and belongs to the technical field of microwave sensor detection. The system comprises a frequency sweeping local oscillation reference circuit LO1, a frequency hopping reference local oscillation circuit LO2, a frequency mixing circuit, a microwave sensor with a plurality of resonant membranes, a radio frequency detection circuit and a corresponding control circuit, through the two reference local oscillators and the frequency mixer, rapid frequency sweeping of a working interval of each resonant mode is realized, frequency hopping processing is carried out on irrelevant frequency bands, and the contradiction between real-time performance and aliasing problems in a multimode microwave detection technology is solved; based on the multi-mode microwave detection system, a detection circuit and a detection algorithm are used to realize rapid extraction of single-resonance-mode microwave parameters. Rapid frequency hopping and frequency sweeping of a microwave device in a wide frequency interval are achieved, low stray and phase noise levels are maintained, and the real-time performance and accuracy of microwave detection are guaranteed.