RESEARCH OF MAPSK MODULATION BASED ON THE NONLINEAR SATELLITE CHANNEL
During the process of satellite data digital transmission, performance of the conventional Quadrature Amplitude Modulation (QAM) is degraded sharply because of nonlinear distortion resulting from High Power Amplifier (HPA). In this paper, M-ary Amplitude and Phase Shift Keying (APSK) modulation is proposed. According to the intra-ring distance and inter-ring distance, a function of the symbol error rate (SER) is presented and optimization of APSK signal constellations is studied. Finally, the optimal working point for APSK modulation under the condition of Saleh nonlinear model is found. Simulation shows that: at the same of SER, optimal MAPSK is superior to conventional MQAM over nonlinear satellite communication channels.
MAPSK nonlinear channel nonlinear distortion signal to noise ratio
Shuxia Guo Guodong Huang Bing Liu Ying Gao
National Key Lab of Science and Technology on UAV, Northwestern Polytechnical University, Xi’an, Chi College of Marine Engineering, Northwestern Polytechnical University, Xi’an, 710072, China
国际会议
北京
英文
1197-1201
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）