EURASIP Journal on Wireless Communications and Networking 
Volume 2008 (2008), Article ID 286351, 11 pages
doi:10.1155/2008/286351
Research Article

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

Barbara M. Masini,1 Giacomo Leonardi,1 Andrea Conti,2 Gianni Pasolini,1 Alessandro Bazzi,1 Davide Dardari,1 and Oreste Andrisano1

 1WiLab, University of Bologna, Viale Risorgimento 2, Bologna 40136, Italy
2ENDIF, University of Ferrara, Ferrara 44100, Italy
Received 30 April 2007; Revised 24 August 2007; Accepted 2 November 2007

Recommended by Arne Svensson

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.