一种新颖的四天线时空调制通信定位综合化系统

A New System Integrated of Communication and Radiolocation with Four Antennas Space time Modulation

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 。

To meet the challenge of future mobile communication and integrated communication and radiolocation systems, a new space time modulation technology with four antennas is proposed. With the modulation, a new integrated system is designed, which can find direction and carry with messages similar to PSK through differential coding non quadrature four phases, and has a potential to mitigate multipath. The solutions of modulating signal, coding signal space, recovering synchronizer carrier frequency, demodulating coherently message and estimating azimuth are given. The performance of bit error rate and the accuracy of direction finding in presence of Gaussian noise are investigated.