一种新颖的四天线时空调制通信定位综合化系统

一种新颖的四天线时空调制通信定位综合化系统

内容简介：针对通信定位综合一体化的趋势和未来移动通信发展的需要，提出了 一种新颖的 四天线时空调制技术，设计了一种差分编码非正交四相时空调制通信定位综合化系统。该系 统除具有PSK的通信能力外，还能测定用户方位，具有抗多径的潜力。最后给出了信号的调 制编码、接收机的解调与载波恢复、方位角估计等关键问题的解决方案，分析了在高斯信道 下的差分解调和相干解调的误码率和方位角的测量精度。

Abstract：To meet the challenge of future mobile communication and integrated co mmunication and radiolocation systems, a new space-time modulation technology w i th four antennas is proposed. With the modulation, a new integrated system is d esigned, which can find direction and carry with messages similar to PSK throug h d ifferential coding non-quadrature four phases, and has a potential to mitigate m ultipath. The solutions of modulating signal, coding signal space, recovering synchronizer carrier frequency, demodulating coherently mess age and estimating azimuth are given. The performance of bit error rate and the accuracy of direction-finding in presence of Gaussian noise are investigated.

作者：宋茂忠,

关键词：调制技术, 导航, 移动通信, 智能天线, 测向,