Noncoherent Reception of Constant Envelope OFDM in Flat Fading Channels
Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany
Proceedings: PIMRC 2005
Pages: 5Language: englishTyp: PDF
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Authors:
Thompson, Steven C.; Proakis, John G.; Zeidler, James R. (Center for Wireless Communications, University of California, San Diego, 9500 Gilman Drive, MC 0407, La Jolla, CA 92093-0407, USA)
Abstract:
A noncoherent constant envelope orthogonal frequency-division multiplexing (CE-OFDM) receiver is proposed. It is shown that CE-OFDM is naturally noncoherent since the effect of an unknown phase shift at the receiver is eliminated by the matched-filter bank following the front-end phase demodulator. The noncoherent receiver demodulates continuous phase CE-OFDM signals - which produce less adjacent channel interference - with no added complexity. Performance is evaluated in flat fading channels having both Rayleigh and Ricean statistics. Simulation results are compared to analytical approximations.