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Probabilistic List Sphere Decoding for LDPC-Coded MIMO-OFDM Systems

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6 Author(s)
Sungchung Park ; Korea Adv. Inst. of Sci. & Technol., Seoul ; Kwyro Lee ; Yuping Zhang ; Parhi, K.K.
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A probabilistic list sphere decoding (LSD) is proposed for LDPC-coded MIMO-OFDM systems. By confining the search to channel-adaptively chosen promising candidate groups, our proposed probabilistic LSD evaluates the more promising candidates earlier in the search, while retaining efficient implementation of the depth-first LSD. Simulation results show that, the proposed LSD significantly improves the error performance for constrained throughput, or increases the throughput for a fixed bit error rate. The proposed LSD can be implemented by simply adding special hardware blocks that perform preprocessing and control the tree traversal. The K-best search algorithm enables efficient implementation of the preprocessing

Published in:

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on  (Volume:3 )

Date of Conference:

14-19 May 2006