Adaptive Modulation over Nakagami Fading Channels
Wireless Personal Communications: An International Journal
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Adaptive Modulation for multiantenna transmissions with channel mean feedback
IEEE Transactions on Wireless Communications
Orthogonal space-time block coded rate-adaptive modulation with outdated feedback
IEEE Transactions on Wireless Communications
Adaptive modulation and MIMO coding for broadband wireless data networks
IEEE Communications Magazine
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We present and analyze a rate-adaptive multiple-input multiple-output (MIMO) spatial multiplexing system with linear zero-forcing (ZF) receiver in a semi-correlated flat Rayleigh fading channel with spatial correlation at the transmitter-side only. The goal is to maximize the average spectral efficiency (ASE) while satisfying a given bit error ratio (BER) constraint. We consider both continuous and discrete rate adaptation subject to an instantaneous as well as an average BER constraint. Furthermore, we investigate the benefit of using a linear prefilter at the transmitter, which is supposed to optimize transmission by exploiting knowledge of the spatial correlation properties of the channel for mapping a certain number of subchannels to the available transmit antennas. It is shown that the proposed system is capable of realizing very high ASEs and that linear prefiltering might be beneficially exploited for further improving the performance, particularly in highly correlated environments.