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Low-complexity maximum-likelihood decoder for four-transmit-antenna quasi-orthogonal space-time block code

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4 Author(s)
Minh-Tuan Le ; Sch. of Eng., Inf. & Commun. Univ., Taejon, South Korea ; Pham, Van-Su ; Linh Mai ; Yoon, Giwan

This letter proposes a very low-complexity maximum-likelihood (ML) detection algorithm based on QR decomposition for the quasi-orthogonal space-time block code (QSTBC) with four transmit antennas, called the LC-ML decoder. The proposed algorithm enables the QSTBC to achieve ML performance with significant reduction in computational load for any high-level modulation scheme.

Published in:

Communications, IEEE Transactions on  (Volume:53 ,  Issue: 11 )