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The performance analysis of multiuser multiple-input multiple-output (MIMO) system with rate-adaptive modulation and antenna selection over Rayleigh fading channels is presented. By means of exact expression of bit error rate (BER), the suboptimal switching thresholds (ST) of fading gain subject to a target BER constraint are derived. It is shown that this suboptimal ST are very close to the optimal...
In this paper, by combining adaptive modulation and automatic repeat request, a cross-layer design (CLD) scheme for MIMO system with antenna selection (AS) is presented, and the corresponding performance is investigated in Nakagami-m fading channel. Subject to a target packet loss rate and fixed power constraint, the fading gain switching thresholds are derived. According to these results, we further...
The performance analysis of discrete-rate adaptive modulation (AM) for MIMO-OFDM systems with space-frequency block code (SFBC) in Rayleigh fading channels is presented. The fading gain value in each subchannel is partitioned into a number of regions by which the modulation is adapted in terms of the region the fading gain falls in. The fading gain region boundaries are attained for attaining maximum...
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