导频辅助OFDM信道估计算法分析
nalysis of Algorithms in Piloted Channel Estimation for OFDM System
正交频分复用（OFDM）技术作为一种高效可靠的传输方式，被广泛应用于无线通信系统中，导频辅助信道估计是OFDM 系统中的关键技术之一。本文对其流程进行了介绍并对导频点处信道估计算法――最小均方误差（MMSE）、最小平方(LS)及线性最小均方误差(LMMSE)算法原理及复杂度进行了详细分析，通过仿真验证了LMMSE算法的在复杂度及性能上较MMSE及LS算法的优越性。
Orthogonal Frequency-Division Multiplexing(OFDM)technology is a type of transmission technology, which is widely used in wireless telecommunication systems, pilot symbol assisted estimation (PSAM) is a key technology in OFDM system. This paper introduces the estimation flow and analyze the theory and complexity of plot estimation algorithms――minimum mean-squared error(MMSE), Least-Square (LS) and linear minimum mean-squared error(LMMSE) algorithms. Simulation results demonstrate that LMMSE algorithm is more efficiency than MMSE and LS algorithm.
徐乐西
无线通信通信
OFDM信道估计导频符号MMSELMMSE
OFDMhannel estimationPlot symbolMMSELMMSE
徐乐西.导频辅助OFDM信道估计算法分析[EB/OL].(2007-12-05)[2025-07-02].http://www.paper.edu.cn/releasepaper/content/200712-32.点此复制
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