CDMA系统中一种结合空时编码的盲自适应接收器

Blind adaptive multiuser detector with space-time coding for CDMA system

为在有效利用带宽的情况下 ,提高 Code- DivisionMultiple- Access(CDMA)系统接收器在 Rayleigh衰落环境中的性能 ,提高数据发送速率 ,引入了分集技术来设计CDMA接收器。在 Rayleigh衰落环境中 ,利用基于多天线系统的信道估计技术 ,将空时编码技术和 CDMA系统中的盲自适应多用户检测技术相结合 ,设计了一种新颖的 CDMA系统接收器。仿真实验结果表明 :该结合空时编码的接收器的误码率要低于传统

The diversity technique is introduced into the design of Code Division Multiple Access (CDMA) receiver for higher system performance and data transmition rate without sacrificing the bandwidth efficiency. This paper uses space time coding in conjunction with the CDMA system. Channel estimation of a multi antenna system is used to develop a novel blind multiuser detector with space time coding in a Rayleigh fading channel. Numerical results show that the new algorithm's performance is better than the conventional CDMA receiver's performance.