Performance of joint transmit scheme assisted multiple-input multiple-output multi-carrier IDMA system

Authors:
K. S. Vishvaksenan;R. Seshasayanan;Yuvaraj Krishnamoorthy
Affiliations:
Department of ECE, SSN Institutions affiliated to Anna University, Chennai 603110, India;Department of ECE, Anna University, Chennai 600025, India;Department of ECE, Arizona State University, Arizona, AZ 85287, US
Venue:
Computers and Electrical Engineering
Year:
2013

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Abstract

In this paper, we present the performance of a multiple-input multiple-output multi-carrier interleave division multiple access (MC-IDMA) system assisted by combined vertical Bell Laboratories layered space-time architecture and space-time block code processing over correlated frequency-selective channels for downlink communication. In MC-IDMA system, multi-carrier is realized by orthogonal frequency division multiplexing, which can eliminate the effects of time dispersion. At the mobile station, we employ zero forcing maximum-a-posteriori and minimum mean square error MAP (MMSE/MAP) multi-user detectors (MUD) to mitigate the effects of multi stream interference and iterative chip detection to combat the effects of multiple access interference. The performance of the considered system is compared with double space-time transmit diversity (DSTTD) aided MC-IDMA system. The simulation results show that the considered scheme outperforms DSTTD MC-IDMA and MC-CDMA system with MMSE/MAP MUD in terms of achievable bit error rate.