Open Access Research Article

How Equalization Techniques Affect the TCP Performance of MC-CDMA Systems in Correlated Fading Channels

BarbaraM Masini1*, Giacomo Leonardi1, Andrea Conti2, Gianni Pasolini1, Alessandro Bazzi1, Davide Dardari1 and Oreste Andrisano1

Author Affiliations

1 WiLab, University of Bologna, Viale Risorgimento 2, Bologna 40136, Italy

2 ENDIF, University of Ferrara, Ferrara 44100, Italy

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EURASIP Journal on Wireless Communications and Networking 2008, 2008:286351  doi:10.1155/2008/286351

Published: 21 November 2007

Abstract

This paper investigates the impact of several equalization techniques for multicarrier code division multiple access systems on the performance at both lower and upper layers (i.e., physical and TCP layers). Classical techniques such as maximal ratio combining, equal gain combining, orthogonality restoring combining, minimum mean square error, as well as a partial equalization (PE) are investigated in time- and frequency-correlated fading channels with various numbers of interferers. Their impact on the performance at upper level is then studied. The results are obtained through an integrated simulation platform carefully reproducing all main aspects affecting the quality of service perceived by the final user, allowing an investigation of the real gain produced by signal processing techniques at TCP level.