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Combined spatial multiplexing and diversity techniques for coded MC-CDMA systems with suboptimal MMSE-based receivers

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4 Author(s)
Vehkapera, M. ; Centre for Wireless Commun., Oulu Univ., Finland ; Tujkovic, D. ; Zexian Li ; Juntti, M.

We study several transmission techniques utilizing efficient forward error correction coding (FEC), space-time coding (STC), group-wise layered space-time (GLST) architectures, and, due to the inevitable complexity restrictions, suboptimal minimum mean squared error (MMSE) based receiver interfaces in the context of downlink multicarrier code-division multiple-access (MC-CDMA). Frequency-selective Rayleigh fading channels are assumed and the effect of spatial correlation on the system performance is considered. The results demonstrate that the recently proposed space-time turbo coded modulation (STTuCM) has a significant advantage over the more conventional transmission schemes combining orthogonal space-time block codes (STBCs) and single-antenna optimized turbo coded modulation also when the proposed GLST architectures and suboptimal, lower complexity receivers are utilized.

Published in:

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st  (Volume:1 )

Date of Conference:

30 May-1 June 2005

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