Analytical and computational methods of advanced engineering mathematics
Analytical and computational methods of advanced engineering mathematics
Adaptive Modulation over Nakagami Fading Channels
Wireless Personal Communications: An International Journal
Space-time block codes from orthogonal designs
IEEE Transactions on Information Theory
Adaptive modulation and MIMO coding for broadband wireless data networks
IEEE Communications Magazine
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Adaptive modulation and power allocation schemes have been widely used in multiple-input multiple-output (MIMO) systems to enhance spectral efficiency while maintaining bit error ratio (BER) to a target level. We derive the spectral efficiency of orthogonal space-time block codes (OSTBC) that can be achieved by applying adaptive modulation and power allocation. Compared to non-adaptive power scheme, the adaptive power allocation can achieve substantial gain in the spectral efficiency. Moreover, channel estimation errors are taken into account and the impact on the spectral efficiency is investigated.