MPPM coding modem communication method and system for adaptive self-synchronization, the method comprising: using trellis-coded modulation and pulse position modulation ary composition TCM-MPPM joint modulation encoding; receiving end information from synchronous acquisition and adaptive demodulation and ...
AM FM PM MATLAB Code What is modulation BPSK-This page describesBPSKmodulation technique with equation and constellation diagram. QPSK-This page describesQPSKmodulation technique with equation and constellation diagram. QAM-This page describesQAMmodulation technique with equation and constellation diagram. MS...
PROBLEM TO BE SOLVED: To reduce the current consumption by applying control to the demodulation and modulation circuits in a way that supply of a clock signal to a detection circuit is stopped until a succeeding symbol time begins after the detection of a prescribed carrier pulse in existence ...
A 4-PPM modulation and demodulation algorithm based on FPGA is demonstrated. Experimental results show that when the BER is 1E-6, the receiving sensitivity of 4-PPM modulation is 5.11 dB higher than that of OOK.Chengyue JiQin MeiQing Li...
PROBLEM TO BE SOLVED: To reduce the current consumption by applying control to the demodulation and modulation circuits in a way that supply of a clock signal to a detection circuit is stopped until a succeeding symbol time begins after the detection of a prescribed carrier pulse in existence ...
PPM Modulation and Demodulation pdfdemodulation pdf
The design of modulation and demodulation will directly affect the transmission quality of the whole system. Therefore, the design of modulation and demodulation system is of great significance to the application of optical communication. In this paper, the PPM modulation and demodulation is designed ...
The modulation circuit which adopts PPM mode, the demodulator circuit and modulation and demodulation circuit systemPROBLEM TO BE SOLVED: To reduce the current consumption by applying control to the demodulation and modulation circuits in a way that supply of a clock signal to a detection circuit ...
A wireless optical communication channel estimation and soft-demodulation method by using 4PPM digital modulation mode comprises steps of firstly establishing a wireless optical communication atmosphere mathematical model; performing detection and judgement on 4PPM signals received in a window through ...
MODULATION CIRCUIT, DEMODULATION CIRCUIT AND ON MODEM CIRCUIT SYSTEM ADOPTING PPM SYSTEMPROBLEM TO BE SOLVED: To reduce the current consumption by applying control to the demodulation and modulation circuits in a way that supply of a clock signal to a detection circuit is stopped until a succeeding...