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Proceedings Paper

Performance comparison of uncoded and coded OFDM and OFDM-CDMA waveforms on HF multipath/fading channels
Author(s): John Nieto
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Paper Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a very popular technique used for data transmission on multipath fading channels. The multipath component of these types of channels causes a phenomenon known as frequency selective fading. This type of fading can severely degrade or completely eliminate the signal energy of many of the OFDM tones producing an irreducible error rate, even when no noise is present. In the early 1990's, researchers combined some of the characteristics of Code Division Multiple Access (CDMA) and Spread Spectrum (SS) with OFDM in order to create a more robust modulation scheme capable of surviving frequency selective fading without the need for forward error correction (FEC) techniques and thus OFDM-CDMA was born. This paper will investigate the performance of uncoded and coded OFDM and OFDM-CDMA waveforms on various HF multipath/fading channels.

Paper Details

Date Published: 2 June 2005
PDF: 12 pages
Proc. SPIE 5819, Digital Wireless Communications VII and Space Communication Technologies, (2 June 2005); doi: 10.1117/12.604570
Show Author Affiliations
John Nieto, Harris Corp. (United States)


Published in SPIE Proceedings Vol. 5819:
Digital Wireless Communications VII and Space Communication Technologies
Rabindra Singh; Raghuveer M. Rao; Sohail A. Dianat; Michael D. Zoltowski, Editor(s)

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