Elements of information theory
Elements of information theory
Understanding digital subscriber line technology
Understanding digital subscriber line technology
Multiuser Detection
On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
IEEE Transactions on Wireless Communications
Capacity-approaching rate function for layered multiantenna architectures
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Limiting performance of block-fading channels with multiple antennas
IEEE Transactions on Information Theory
IEEE Journal on Selected Areas in Communications
Sum discrete-rate maximization with rate and power control in layered space-time coding
IEEE Transactions on Communications
Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes
IEEE Transactions on Communications
MIMO transceivers with decision feedback and bit loading: theory and optimization
IEEE Transactions on Signal Processing
Transmit diversity vs. spatial multiplexing in modern MIMO systems
IEEE Transactions on Wireless Communications
IEEE Transactions on Communications
Opportunistic cooperation for multi-antenna multi-relay networks
IEEE Transactions on Wireless Communications
Partial information relaying with multi-layered superposition coding
ICCSA'10 Proceedings of the 2010 international conference on Computational Science and Its Applications - Volume Part III
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This paper presents an extension of the vertical Bell Laboratories Layered Space-Time (V-BLAST) architecture in which the closed-loop multiple-input multiple-output (MIMO) capacity can be approached with conventional scalar coding, optimum successive decoding (OSD), and independent rate assignments for each transmit antenna. This theoretical framework is used as a basis for the proposed algorithms whereby rate and power information for each transmit antenna is acquired via a low-rate feedback channel. We propose the successive quantization with power control (SQPC) and successive rate and power quantization (SRPQ) algorithms. In SQPC, rate quantization is performed with continuous power control. This performs better than simply quantizing the rates without power control. A more practical implementation of SQPC is SRPQ, in which both rate and power levels are quantized. The performance loss due to power quantization is insignificant when 4-5 bits are used per antenna. Both SQPC and SRPQ show an average total rate close to the closed-loop MIMO capacity if a capacity-approaching scalar code is used per antenna.