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

Author

Nieto, John W.

Author_Institution

Harris RF Commun., Rochester, NY, USA

Volume

3

fYear

2005

fDate

28 Aug.-2 Sept. 2005

Abstract

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.

Keywords

OFDM modulation; code division multiple access; fading channels; interleaved codes; multipath channels; phase shift keying; 2-ary phase shift keying modulation; HF fading channels; HF multipath channels; code division multiple access; coded waveforms; interleaved waveform; modulation schemes; orthogonal frequency division multiplexing; Degradation; Fading; Frequency domain analysis; Hafnium; Modulation coding; Multiaccess communication; Multiuser detection; OFDM modulation; Reflection; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on

Print_ISBN

0-7803-9066-0

Type

conf

DOI

10.1109/ECCTD.2005.1523061

Filename

1523061