Pilot-assisted Decision Feedback Channel Estimation for OFDM-STTD
نویسندگان
چکیده
Abstract Orthogonal frequency division multiplexing (OFDM) has been attracting much attention for very high-speed data transmission over a frequency-selective fading channel. To improve the performance in a fading channel, some form of antenna diversity technique is necessary. Recently, Alamouti’s space-time coded transmit diversity (STTD) has been gaining a lot of attention for downlink (base-to-mobile) transmissions. For STTD decoding, channel estimation is necessary. In this paper, we propose a pilot-assisted decision feedback channel estimation for STTD decoding in OFDM and evaluate the bit error rate (BER) performance by computer simulation. Keyword Frequency-selective fading, OFDM,STTD,Decision feedback,Channel estimation
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