Open Access

Bit Error Rate Analysis for MC-CDMA Systems in Nakagami- Fading Channels

EURASIP Journal on Advances in Signal Processing20042004:132510

https://doi.org/10.1155/S1110865704310073

Received: 24 February 2003

Published: 7 September 2004

Abstract

Multicarrier code division multiple access (MC-CDMA) is a promising technique that combines orthogonal frequency division multiplexing (OFDM) with CDMA. In this paper, based on an alternative expression for the -function, characteristic function and Gaussian approximation, we present a new practical technique for determining the bit error rate (BER) of multiuser MC-CDMA systems in frequency-selective Nakagami- fading channels. The results are applicable to systems employing coherent demodulation with maximal ratio combining (MRC) or equal gain combining (EGC). The analysis assumes that different subcarriers experience independent fading channels, which are not necessarily identically distributed. The final average BER is expressed in the form of a single finite range integral and an integrand composed of tabulated functions which can be easily computed numerically. The accuracy of the proposed approach is demonstrated with computer simulations.

Keywords and phrases

multicarrier CDMAbit error rateNakagami fading channelspread-spectrum communications

Authors’ Affiliations

(1)
Centre for Wireless Communications (CWC), University of Oulu

Copyright

© Li and Latva-aho. 2004