摘要
自适应技术在多输入多数出(MIMO)系统中能提高无线通信系统的可靠性和吞吐量,在无线通信系统中有着广阔的应用前景。设计的Kerdock码书与调制方式的自适应MIMO系统通过有限量化反馈信道采用传输信道容量最大化准则实时选择码字、按比特分配算法选择每个发送符号的调制方式,经仿真实验得出该有限量化反馈预编码与调制技术相结合的自适应系统对误码性能大的改善,并在低信噪比时呈现出好的分集增益特性。
The adaptive technology in multi-input multi-output（MIMO） systems could greatly improve the reliability and throughput of wireless communication system,and is very promising in the future wireless system. The adaptive MIMO systems, which is designed based on Kerdock codebook,uses the limited quantitative feedback channel and the channel capacity maximization criterion to select the code word in real time and the modulation method about each sent symbol based on the bit allocation algorithm. Simulation results show the adaptive system could significantly improve the bit error rates（BER） performance and generate the good diversity gain characteristics at low signal-to-noise ratio.
出处
《无线电通信技术》
2013年第3期12-16,共5页
Radio Communications Technology
