摘要
预编码技术能够有效的抑制MIMO信道中的多用户干扰,能显著提高系统容量,同时也能大大简化接收机的算法。主要对MIMO-OFDM系统的非线性预编码技术进行了深入研究,通过搭建出的MIMO-OFDM仿真平台对DPC(Dirty Paper Coding,脏纸编码)和THP(Tomlinson Harashima Precoding,模代数TH编码)两种非线性预编码算法进行了性能仿真,比较了这两种算法的BER(误码率),同时也比较了它们与线性ZF(Zero Forcing,迫零)预编码算法的BER差异,并指出了不同算法的适用性。
Precoding can effectively suppress the multi-user interference in MIMO channel, significantly improve the system capacity, and greatly simplify the algorithms of receivers, the nonlinear precoding tech- nologies in MIMO-OFDM system is profoundly studied. And with MIMO-OFDM simulation platform, the two nonlinear precoding algorithm including DPC （Dirty Paper Coding） and THP （Tomlinson Harashima precoding） are compared on their BERs and their differences of with the linear ZF（ Zero Forcing） precod- ing algorithm. And finally the applicability of various algorithms is also given.
出处
《通信技术》
2013年第12期6-10,共5页
Communications Technology
