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IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
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Foundations and Trends in Communications and Information Theory
Power and modulo loss tradeoff with expanded soft demapper for LDPC coded GMD-THP MIMO systems
IEEE Transactions on Wireless Communications
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IEEE Transactions on Information Theory
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WOCN'09 Proceedings of the Sixth international conference on Wireless and Optical Communications Networks
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 3
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IEEE Transactions on Information Theory
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DNCOCO'10 Proceedings of the 9th WSEAS international conference on Data networks, communications, computers
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The discrete-time additive Gaussian intersymbol interference (ISI) channel with i.i.d. (not necessarily Gaussian) input signals is considered. Several new and old lower bounds on the capacity are derived in a unified manner by assuming different front-end receiver filters, in particular the sampled whitened matched filter (SWMF) and the minimum mean-squared error-decision feedback equalizer (MMSE-DFE) filter. The features of the bounds are demonstrated and compared in several examples with binary and quaternary input signals. It is also shown that the effect of an ideal post-cursor or tail cancellation, in an information-preserving context, depends primarily on the front-end filter. While, as is well known, ideal post-cursor cancellation at the output of the SWMF decreases the information, the opposite trend is seen when an MMSE-DFE front filter is considered. This observation reflects the basic theoretical obstacles in precoding, i.e., ideal post-cursor cancellation in the presence of a pre-cursor. It is used to assess the inherent loss (in terms of information rates as compared to the rates achievable with the hypothetical ideal post-cursor cancellation) associated with any post-cursor cancellation technique such as precoding, DFE, or other variants, when operating in synergy with the MMSE-DFE front-end filter. The effect of the front-end filter on an ideally interleaved, precoded coded-modulation system is also addressed