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In this paper, we propose a new full-rate, full-diversity STBC for the quasi-static Rayleigh flat fading 2times2 MIMO channel. This code has an ML-decoding complexity of the order of M3. For square QAM, the ML-decoding complexity is of the order of M2radic2. and also matches the Golden code in coding gain for 4- and -16 QAM constellations, and have the non-vanishing determinant (NVD) property for...
Multiple-input multiple-output (MIMO) communication systems is known to provide diversity and coding gain over that of a single-input single-output (SISO) system. Furthermore, automatic repeat request (ARQ) provides time diversity and improves the performance and reliability. In this paper, we propose and investigate hybrid ARQ (HARQ) scheme based on non-orthogonal space-time block codes (NOSTBC)...
Space-time block coding (STBC) is an attractive solution for improving quality in wireless links. In this paper, we analyze the impact of channel estimation error on the ergodic capacity and symbol error rate (SER) for space-time block coded multiple-input multiple-output (MIMO) systems. We derive a closed-form capacity expression over MIMO Rayleigh channels with channel estimation error. Moreover,...
The recently developed IEEE 802.16e specifications for broadband wireless access include three multiple-input multiple-output (MIMO) profiles employing 2??2 space-time codes (STCs) and two of those are mandatory on the downlink of mobile WiMAX systems. One of these is full rate, and the other is full diversity, but neither of them has both of the desired features. The third profile, which is not mandatory,...
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