摘要
对信道估计有利于消除信道对OFDM系统性能的影响。本文探讨了OFDM系统中信道估计的多种方法,重点对MMSE(最小均方误差)、LS(最小平方)、PSAM(导频辅助调制)和盲的信道估计方法及它们的特点进行了分析和比较。
Orthogonal Frequency Division Multiplexing (OFDM) has high f requency utilization and is robust to interference. It has attracted more and mo re attention. Channel estimation is needed in order to eliminate the influence o f channels in OFDM systems. In this paper, several channel estimation methods fo r OFDM are introduced. MMSE, LS, PSAM and blind methods and their characteristic s are analyzed and compared.
出处
《通信技术》
2002年第12X期29-31,共3页
Communications Technology
基金
国家863项目(2001AA121031)
