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Optimal and suboptimal receivers for maximal-rate root-LDPC codes over MIMO block-fading channels | IEEE Conference Publication | IEEE Xplore

Optimal and suboptimal receivers for maximal-rate root-LDPC codes over MIMO block-fading channels


Abstract:

This paper deals with full-diversity schemes for MIMO systems in a slowly-varying fading environment. We consider LDPC codes expressly designed for block-fading channels ...Show More

Abstract:

This paper deals with full-diversity schemes for MIMO systems in a slowly-varying fading environment. We consider LDPC codes expressly designed for block-fading channels (rootcheck LDPC) and we couple them with spatial multiplexing, to show that they achieve diversity gain, unlike traditional LDPC codes. At the receiver, we consider an iterative turbo-like receiver, both with the optimal demodulator and a suboptimal one, based on linear MMSE filtering. To improve the performance of the latter one, a power unbalance between transmit antennas is introduced. Simulation results and semianalytical techniques like EXIT charts show that our optimized schemes do achieve full diversity.
Date of Conference: 31 July 2011 - 05 August 2011
Date Added to IEEE Xplore: 03 October 2011
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Conference Location: St. Petersburg, Russia

References

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