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Tight Approximation of the Bit Error Rate for BICM(-ID) Assuming Imperfect CSI

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5 Author(s)
Godtmann, S. ; Inst. for Integrated Signal Process. Syst., RWTH Aachen Univ., Aachen ; I-Wei Lai ; Ascheid, G. ; Tzi-Dar Chiueh
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In this correspondence, we analytically derive the bit error rate (BER) for bit-interleaved coded modulation (BICM) under the assumption of a temporally correlated flat Rayleigh fading channel. We assume the channel state information (CSI) to be unknown at receiver side and consider a linear minimum mean-squared error (LMMSE) channel estimator that relies on periodically inserted pilot symbols. We give asymptotic results for both non-iterative BICM and BICM with iterative decoding (BICM-ID). Furthermore, we show that the interpretation of the channel estimation error as an SNR degradation holds true in these cases.

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Wireless Communications, IEEE Transactions on  (Volume:7 ,  Issue: 11 )