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An investigation of coded OFDM and OFDM-CDMA waveforms utilizing different modulation schemes on HF multipath/fading channels

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1 Author(s)
J. W. Nieto ; Harris RF Commun., Rochester, NY, USA

Orthogonal frequency division multiplexing-code division multiple access (OFDM-CDMA) is a technique that has been used to improve the robustness of OFDM. For uncoded waveforms, OFDM-CDMA has been shown to offer some significant performance advantages over OFDM on multipath/fading channels (Nieto, 2004). A recent paper (Nieto, 2005) reported that this performance advantage was greatly reduced for coded and interleaved waveforms. However, the results presented were only for 2-ary phase shift keying (2-PSK) modulation. This paper extends this research by investigating the performance of coded OFDM and coded OFDM-CDMA waveforms utilizing higher-order modulation schemes on various HF multipath/fading channels.

Published in:

Proceedings of the 2005 European Conference on Circuit Theory and Design, 2005.  (Volume:3 )

Date of Conference:

28 Aug.-2 Sept. 2005