EM-based channel estimation for OFDM

被引：6

作者：

Ma, XQ ^{[1
]}

Kobayashi, H ^{[1
]}

Schwartz, SC ^{[1
]}

机构：

[1] Princeton Univ, Sch Engn & Appl Sci, Dept Elect Engn, Princeton, NJ 08540 USA

来源：

2001 IEEE PACIFIC RIM CONFERENCE ON COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING, VOLS I AND II, CONFERENCE PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/PACRIM.2001.953666

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Estimating a channel that is subject to frequency selective Rayleigh fading is a challenging problem in an orthogonal frequency division multiplexing (OFDM) system. We propose an EM-based iterative algorithm to efficiently estimate the channel impulse response (CIR) of an OFDM system. This algorithm is capable of improving the channel estimate by making use of pilot tones to obtain the initial estimate for iterative steps. Simulation results show that the bit error rate (BER) can be significantly reduced by this algorithm.

引用

页码：449 / 452

页数：4

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