Effects of Channel Estimation Error in the Presence of CFO on OFDM BER in Frequency-Selective Rayleigh Fading Channels

淡江大學機構典藏 > 工學院 > 電機工程學系暨研究所 > 期刊論文 > Item 987654321/53773

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题名:	Effects of Channel Estimation Error in the Presence of CFO on OFDM BER in Frequency-Selective Rayleigh Fading Channels
作者:	Yih, Chi-hsiao
贡献者:	淡江大學電機工程學系
关键词:	Orthogonal frequency division multiplexing;Channel estimation;Carrier frequency offset;Frequencyselective Rayleigh fading;Bit-error-rate;Performance analysis
日期:	2008-07-01
上传时间:	2011-05-20 10:00:18 (UTC+8)
出版者:	Academy Publisher
摘要:	In this paper, we study the effects of channel estimation error on the bit-error-rate (BER) of orthogonal frequency division multiplexing (OFDM) systems in frequency-selective slowly Rayleigh fading channels. Due to the additive white Gaussian noise (AWGN) and the intercarrier interference (ICI) caused by the residual carrier frequency offset (CFO), the channel estimation based on the training symbols is not perfect. We characterize the performance degradation resulting from imperfect channel state information (CSI) by deriving the BER formulas for BPSK, QPSK, 16-QAM, and 64-QAM modulation schemes. The derived BER formulas contain no numerical integrals and can be evaluated easily and accurately. Simulation results validate the correctness of our theoretical analysis.
關聯:	Journal of Communications 3(3), pp.10-18
显示于类别:	[電機工程學系暨研究所] 期刊論文

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