Abstract
In this paper, a quasi-orthogonal space time block coding (QO-STBC) scheme with maximum likelihood (ML) decoding via simple linear detection is compared to QOSTBC conventional ML decoder and QOSTBC with simplified zero forcing decoder. 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 paper, the suggested QOSTBC scheme which eliminates interference terms is used to obtain linear detection. The proposed method achieves a great reduction in decoding complexity with respect to the conventional QO-STBC scheme, also a simplified zero forcing algorithms is compared to the suggested linear detection scheme.
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