Transmission and reception with multiple antennas: theoretical foundations
Communications and Information Theory
Approaching the MIMO capacity with a low-rate feedback channel in V-BLAST
EURASIP Journal on Applied Signal Processing
Multiple ARQ processes for MIMO systems
EURASIP Journal on Applied Signal Processing
Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes
IEEE Transactions on Communications
Achievable sum rate of MIMO MMSE receivers: a general analytic framework
IEEE Transactions on Information Theory
IEEE Transactions on Communications
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The simultaneous use of multiple transmit and receive antennas can unleash very large capacity increases in rich multipath environments. Although such capacities can be approached by layered multiantenna architectures with per-antenna rate control, the need for short-term feedback arises as a potential impediment, in particular as the number of antennas - and, thus, the number of rates to be controlled - increases. What we show, however, is that the need for short-term feedback in fact vanishes as the number of antennas and/or the diversity order increases. Specifically, the rate supported by each transmit antenna becomes deterministic and a sole function of the signal-to-noise ratio of transmit and receive antennas, and the decoding order, all of which are either fixed or slowly varying. More generally, we illustrate - through this specific derivation - the relevance of some established random code-division multiple-access results to the single-user multiantenna problem.