Downlink Performance Analysis of Synchronous Multi-Cell MC-CDMA Systems with Code Hopping under Correlated Fading Channels

Jayong KOO
Youngnam HAN

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B    No.7    pp.2955-2961
Publication Date: 2005/07/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.7.2955
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
multicarrier CDMA,  multiple user interference,  co-channel interference,  Gaussian approximation,  

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Summary: 
In this paper, downlink performance of multicarrier CDMA (MC-CDMA) systems under correlated fading channels is analytically investigated. Under code hopping, a signal to interference plus noise ratio (SINR) and bit error rate (BER) performance are derived in multi-cell environments. In addition, specific conditions to validate the commonly used Gaussian approximation of an interference plus noise distribution in MC-CDMA systems are discussed. It is proved that the approximation is adequate in case of low correlation between subcarriers and a large spreading factor (SF). The proposition is confirmed through comparison between analytical and simulation results.