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Decision feedback detection with error compensation for hybrid space-time block codes

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4 Author(s)
Chang Kyung Sung ; Dept. of Commun. Eng., Korea Univ., Seoul, South Korea ; Heunchul Lee ; Hwangjun Song ; Inkyu Lee

Spatial division multiplexing (SDM) techniques increase the total throughput by transmitting independent information streams through multiple transmit antennas whereas space time coding (STC) techniques utilize diversity gain. Hybrid space-time block code (STBC) schemes proposed combine the above two techniques to maximize the link performance. We propose a decision feedback detection method to improve the performance of the hybrid STBC scheme for orthogonal frequency division multiplexing (OFDM). In this scheme, we take the error propagation effect into account to enhance the detection performance. Simulation results show that the proposed method outperforms the conventional hybrid STBC detection algorithm by more than 3dB at 1% frame error rate for frequency selective fading channels.

Published in:

Communications Letters, IEEE  (Volume:9 ,  Issue: 10 )

Date of Publication:

Oct. 2005

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