摘要
为了研究单用户分组传输系统设计的问题,基于线性预编码技术下的无线频率选择性信道,证明在有限冲击响应滤波器信道中,采用线性预编码技术可以获得很好的信道均衡。分组传输中的线性预编码是指一个线性空间到另外一个线性空间的变换,以循环前缀或迫零方式的冗余码片可以消除分组间干扰。同时OFDM系统也可以采用线性预编码技术,结果表明在很多方面采用线性预编码技术的OFDM系统将优于传统的OFDM系统。
This paper introduces the problem of single user block transmission system design in wireless frequency- selective channels with Linear Precoding （LP）. We will show that using linear precoding, perfect channel equalization is possible with finite impulse response filters. Our linear precoding in the block transmission set up corresponds to a linear transformation from one linear space to another linear space. By inserting redundant chips in the form of CP or ZP,we will be able to achieve IBI - free reception. It will turn out that OFDM fits very well the linear precoded block transmission,and it is better than traditional OFDM.
出处
《现代电子技术》
2006年第13期38-40,共3页
Modern Electronics Technique
