Title :
CPM receiver with immunity from carrier phase deviation
Author :
Jing, Li ; Zongyun, Hu ; Lindong, Ge
Author_Institution :
Dept. of Inf. Sci., Zhengzhou Univ., Henan, China
Abstract :
When perfect carrier estimation can not be obtained, which is a matter of frequent occurrence with a coherent demodulator, a receiver structure that is immune from or insensitive to the carrier deviation is preferable. Such a CPM receiver is proposed. The received signal, after being converted to baseband, is compared with a series of reference signals. By using the module constancy of the CPM signals, a decision criterion is derived. The reference message that matches the decision criterion best is selected to be the transmitted message. The receiver is completely immune from carrier phase deviation and is insensitive to frequency deviation. When a deviation of the carrier phase or frequency exists, the proposed receiver shows much better performance than the simplified coherent receiver. Simulation results that confirm the analysis are also given
Keywords :
continuous phase modulation; demodulators; frequency estimation; phase estimation; receivers; CPM receiver; carrier estimation; carrier phase deviation immunity; coherent demodulator; decision criterion; frequency deviation; module constancy; Analytical models; Demodulation; Detectors; Frequency estimation; Phase estimation; Phase modulation; Receivers; Signal generators; Software radio; Viterbi algorithm;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.889185