时相调制的频分多址接入性能分析  

Performance Analysis of Frequency-Division Multiple Access for Time-Phase Modulation

作　　者：邓兵[1] 王旭[1] 王红星[1] 毛忠阳[1] 李相辉 

机构地区：[1]海军航空工程学院电子信息工程系 [2]解放军71315部队

出　　处：《电讯技术》2012年第4期456-460,共5页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(60902054);中国博士后科学基金资助项目(201003758;20090460114);山东省"泰山学者"建设工程专项经费项目~~

摘　　要：依据时相调制信号的相关系数分析了其频分多址接入性能,导出了用户间载频差与相关系数的解析关系表达式,可以发现:由于其调制信息包含在很宽的边带谱内,因此,时相调制的频分多址接入需要较宽的信道划分,且多用户间的互扰效果会随着载波频率差而起伏变化,不过,总的趋势是随着载频差的增大而减弱。分析结果为时相调制的频分多址方案设计提供了理论基础。The performance of frequency - division multiple access （FDMA） is analysed for time - phase modulation based on the correlation coefficient. Theanalytic formula, which shows the relationship between the corre- lation coefficient and the difference of carrier frequency, is obtained. It can be found that wider band is neces- sary for FDMA of ;time - phase modulation by reason of the modulated information consisted in the very wide sideband. Moreover, the influence between multi - user will fluctuate versus the difference of carrier frequency, which diminishes as a whole when the difference of carrier frequency increases. The analysis results provide the theoretic base for FDMA scheme design.

关 键 词：时相调制 频分多址 相位突变 超窄带 相关解调 

分 类 号：TN911[电子电信—通信与信息系统]