Multi-user Detection with Different Linear Equalizers for the Downlink MIMO MC-CDMA Systems over Frequency Selective Fading Channel | ||
| The International Conference on Electrical Engineering | ||
| Article 87, Volume 8, 8th International Conference on Electrical Engineering ICEENG 2012, May 2012, Pages 1-21 PDF (706.29 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iceeng.2012.32706 | ||
| Authors | ||
| Belal A. Al-fuhaidi1; Hossam Eldin. A. Hassan2; Moataz M. Salah2; Salah S. Alagooz2 | ||
| 1Yemeni Armed Forces. | ||
| 2Egyptian Armed Forces. | ||
| Abstract | ||
| Modern wireless communications require an efficient spectrum usage and high channel capacity and throughput. Multiple input and multiple output (MIMO), Linear equalizers, multi-user detection (MUD) and multicarrier code-division multiple access (MCCDMA) are possible solutions to achieve spectral efficiency, high channel capacity, eliminate MAI , eliminate ISI and robustness against frequency selective fading. In this paper, we combine all these techniques and investigate BER performance. We propose a low complexity receiver structure for Single-input Multiple-output (SIMO) downlink MC-CDMA systems. It employs an interference cancellation scheme to suppress the interference caused by the multipath fading channel. Also, the proposed scheme is developed for Multiple-input Multiple-output (MIMO) MC-CDMA system. The performance analysis of Downlink MIMO MC-CDMA systems with V-BLAST over frequency selective fading channel is investigated under various number of transmit and receive antennas. The simulation results show that MIMO MC-CDMA with V-BLAST multi-user detection provides high data rate and the BER significant improvement when MIMO-MC CDMA with multi user detection and different linear equalizers is applied. | ||
| Keywords | ||
| MC-CDMA; SIMO; MIMO; MMSE; RZF; PIC; ISI; MAI and rake receiver | ||
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