2) dispatching communication system 调度通信系统 1. A new wire-radio trolley dispatching communication system is developed. 研制开发了有线-无线调度通信系统,该系统通信效果好、结构简单、成本低、便于维护,有广阔的推广应用前景,该系统关键技术为频率选择、共信道干扰、转接台控制技术及阻抗匹配、接收机频率...
communication path to the\nreceiver end of the system where the signals will be\ndemodulated.\nIn order to reduce noise resulting from delay\ndifferentials between polarised signals transmitted over the\noptical fibre path it is preferred to arrange that the\ncommunication path includes sections of...
(Electronics) a type of modulation, used in communication systems, in which the phase of a radio carrier wave is varied by an amount proportional to the instantaneous amplitude of the modulating signal Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publish...
Optical signal processing techniques and applications of optical phase modulation in high-speed communication systems In recent years, optical phase modulation has attracted much research attention in the field of fiber optic communications. Compared with the traditional optical intensity-modulated signal, on...
A frame synchronization technique for a phase-difference modulation communication system. A carrier wave is phase-difference modulated in accordance with information signals emanating from a plurality of information channels and subsequently time-division multiplexed into a series of time frames. The time-...
A plural-differential phase shift keying (PDPSK) communication system has a transmitter (22) for encoding digital data as plural differentials of phase between successive pairs of channel symbols of a carrier, and a receiver (24) with a plurality of phase differential detectors (32, 48) ...
aMost modern bandwidth efficient communication systems use quadrature amplitude modulation. The input data stream is partitioned into sets of N bits.These bits are used to select one of 2N possible waveforms that are both am-plitude and phase modulated. The waveforms are directed to the channel,...
35. In a communication system having a plurality of transmitters for transmitting signals simultaneously, said system having a station for generating said signals and also for generating control signals, apparatus for controlling the modulation characteristics of said signals, which said transmitters are ...
System, method and apparatus for joint self phase modulation compensation for coherent optical polarization-division-multiplexed orthogonal-frequency division-multiplexing systems System, apparatus and method of optical communication are provided for performing digital compensation of the self-phase modulation (...
phase-shift keying (PSK)principal component analysis (PCA)quadrature amplitude modulation (QAM)The evolution of technologies in data communication system has ... C Panem,N Vetrekar,R Gad - 《International Journal of Communication Systems》 被引量: 0发表: 2022年 Method and apparatus for wireless ...