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A novel QO-STBC scheme with linear decoding for three and four transmit antennas

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4 Author(s)
Unhee Park ; Div. Electron. & Inf. Eng., Chonbuk Nat. Univ., Jeonju ; Sooyoung Kim ; Kwangjae Lim ; Jing Li

In this letter, we propose a quasi-orthogonal spacetime block coding (QO-STBC) scheme with maximum likelihood (ML) decoding via simple linear detection. A conventional QOSTBC scheme can achieve the full rate, but at the cost of decoding complexity and diversity gain. These disadvantages of the conventional QO-STBC scheme are mainly a result of interference terms in the detection matrix. In this letter, we propose a new QO-STBC scheme which eliminates interference terms. The proposed method achieves improved diversity gain with respect to the conventional QO-STBC scheme, as well as a great reduction in decoding complexity.

Published in:

Communications Letters, IEEE  (Volume:12 ,  Issue: 12 )