摘要
正交频分复用(OFDM)是一种高效的数字传输技术,因其较高的频带利用率以及抗多径衰落的性能,被视为下一代无线通信的核心技术。信道估计是视线OFDM系统的关键技术之一。主要研究了OFDM无线通信系统中基于导频的信息估计算法——LS算法,MMSE算法以及改进的LS算法,并通过仿真算法的最小均方误差性能和误码率特性证明了改进的LS算法要优于LS算法。
OFDM is a kind of transport technology with high efficiency, and for it＇s high performance in using frequency band and resisting multi-path fading, is regarded as the core technology of next-generation wireless communication systems. Channel estimation is the key technique for OFDM system. This paper presents the pilot-based channel estimation algorithms in OFDM systems. Simulation results indicate that the improved LS algorithm is more efficient than the LS algorithm.
出处
《山西电子技术》
2009年第1期45-47,共3页
Shanxi Electronic Technology
