Semicoherent PPM for wideband communications
AuthorsUlrich G. Schuster, Moritz Borgmann, and Helmut Bölcskei
ReferenceProc. of IEEE International Symposium on Information Theory (ISIT), Chicago, IL, USA, pp. 383, June 2004
AbstractWe quantify the impact of coherence on pulse position modulation (PPM) over wideband fading channels by computing achievable rates and an upper bound on uncoded symbol error probability. We study the influence of channel estimation accuracy on the optimum diversity order and furthermore find that a near-optimum receiver typically needs to estimate a few channel taps only.
KeywordsWideband, low SNR regime, channel estimation, diversity order
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