两种导频符号辅助OFDM信道估计方案的性能比较

2007 3rd International Workshop on Signal Design and Its Applications in Communications Pub Date : 2007-12-26 DOI:10.1109/IWSDA.2007.4408385

Mingqi Li, Yulin Liu, Q. Peng

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引用次数: 3

摘要

基于最小二乘准则，设计了正交频分复用(OFDM)信道估计的时域信道估计算法。同时介绍了用广义旋转矩阵作为线性变换恢复OFDM数据的一些结果。在假设一帧内平滑的瑞利衰落信道条件下，对基于不同CE调制方案的两种线性信道估计方法进行了仿真比较。仿真结果表明，采用同相信道和正交相信道传输CE数据，可以明显提高误码率和PER性能。

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Performance Comparison Between Two Pilot Symbol-aided Channel Estimation Schemes for OFDM

Based on the least square (LS) criterion, the time-domain channel estimation (CE) algorithms for orthogonal frequency division multiplexing (OFDM) channel estimation are designed. Meanwhile we introduce some results on the generalized rotation matrix, which is used as linear transition to recover the OFDM data. We give the simulation comparisons between two different linear channel estimation methods based on different CE modulation scheme under Rayleigh fading channel, which is assumed flat within one frame. Simulation results show that when in-phase channel and quadrature-phase channel are used to carry the CE data, the BER and PER performance can be improved obviously.

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2007 3rd International Workshop on Signal Design and Its Applications in Communications

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