卫星数据加扰方式对OQPSK调制信号的影响分析  

Effect of Data Scrambling Mode on OQPSK Modulating Signal in Satellite Communication

作　　者：江洁 张风源 陈劼 林闽佳 

机构地区：[1]上海航天电子技术研究所,上海201109

出　　处：《上海航天》2015年第4期47-53,共7页Aerospace Shanghai

摘　　要：对特殊情况下数据流设计对偏移正交相移键控(OQPSK)调制信号的影响进行了分析。研究了载荷数据出现长0、长1时,调制输入的I、Q两路数据分别组帧加扰对OQPSK调制信号的影响,分析了I、Q两路数据分别表示不同通道获取的同一目标数据时I、Q两路数据的相关性,讨论了I、Q两路数据的相关性对OQPSK调制信号星座图和频谱的影响。研究可作为后续数传通信链路设计的参考。The effect of data stream design on offset quadrature phase shift keying （OQPSK） modulating signal in satellite communication was analyzed in this paper. Based on the input signal （I/Q） of modulation the I/Q respectively set date frame scrambling effect on OQPSK signal modulation was studied when payload date stream appeared long 0 or long 1. The correlation of I/Q was analyzed on the data of I/Q respectively obtained the same target data from different channels. The correlation of I/Q for OQPSK signal modulation vector diagram and the influence of spectrum were analyzed. The study would be taken as reference to the subsequent data transmission communication link design.

关 键 词：数据流设计 频谱变形 OQPSK调制 IQ分路组帧 

分 类 号：TN911.3[电子电信—通信与信息系统]