Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30184
Adaptive Equalization Using Controlled Equal Gain Combining for Uplink/Downlink MC-CDMA Systems

Authors: Miloud Frikel , Boubekeur Targui, Francois Hamon, Mohammed M'SAAD

Abstract:

In this paper we propose an enhanced equalization technique for multi-carrier code division multiple access (MC-CDMA). This method is based on the control of Equal Gain Combining (EGC) technique. Indeed, we introduce a new level changer to the EGC equalizer in order to adapt the equalization parameters to the channel coefficients. The optimal equalization level is, first, determined by channel training. The new approach reduces drastically the mutliuser interferences caused by interferes, without increasing the noise power. To compare the performances of the proposed equalizer, the theoretical analysis and numerical performances are given.

Keywords: MC-CDMA, Equalization, EGC, Single User Detection.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062320

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1067

References:


[1] Project Broadband Radio Access Networks (BRAN); HYPERLAN Type 2, Technical specification; Physical Layer.
[2] MC-CDMA for next generation systems. The IST projects Matrice and 4MORE.
[3] N.Yee, Jean-Paul M. G. Linnartz and G. Fettweis, Multi-Carrier-CDMA in indoor wireless networks, Conference Proceedings PIMRC -93, Yokohama, September, 1993. p 109-113.
[4] Jean-Paul M. G. Linnartz, Performance Analysis of Synchronous MCCDMA in Mobile Rayleigh Channel With Both Delay and Doppler Spreads. IEEE Transactions on Vehecular Technology, Vol. 50, No. 6, November 2001.
[5] M. Frikel, B. Targui, M. M-Saad, and F. Hamon, Bit Error Rate Analysis of the Controlled Equalization for MC-CDMA. IEEE ICSPC-07.
[6] S. Kaiser, OFDM-CDMA versus DS-CDMA: performance evaluation for fading channels. IEEE International Conference on Communications, pages 1722-1726, June 1995.
[7] S. Kaiser, Multi-carrier CDMA mobile radio system-analysis and optimization of detection, decoding, and channel estimation, Ph.D. dissertation, University of Munich, Munich, Germany, 1998.
[8] K. Fazel et L. Papke, On the performance of convolutionnally-coded CDMA/OFDM for mobile communication system. IEEE Personal, Indoor and Mobile Radio Communications Symposium, pages 468-472, Septembre 1993.