Time-slotted multiuser MIMO systems: beamforming and scheduling strategies
EURASIP Journal on Wireless Communications and Networking - Special issue on multiuser MIMO networks
Bounds on the outage-constrained capacity region of space-division multiple-access radio systems
EURASIP Journal on Applied Signal Processing
Recovering Multiplexing Loss through Concurrent Decode-and-Forward (DF) Relaying
Wireless Personal Communications: An International Journal
Policy-based multiple access for decentralized low power systems
IEEE Transactions on Wireless Communications
A comprehensive study of repetition-coded protocols in multi-user multi-relay networks
IEEE Transactions on Wireless Communications
A formulation of the channel capacity of multiple-access channel
IEEE Transactions on Information Theory
Cooperative multiplexing: toward higher spectral efficiency in multiple-antenna relay networks
IEEE Transactions on Information Theory
Spatial multi-user pairing for uplink virtual-MIMO systems with linear receiver
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Approaching the optimal diversity-multiplexing tradeoff in a four-node cooperative network
IEEE Transactions on Wireless Communications
Wireless Personal Communications: An International Journal
Hi-index | 754.96 |
The signal-to-noise ratio (SNR) and signal bandwidth have been viewed as the dominant factors determining the channel capacity. In wireless communications, the channel capacity can be increased for a given SNR and a given spectral region, by exploiting the spatial diversity provided by the use of multiple antennas and transceivers at a base station. We calculate the channel capacity enhancement of a so-called space-division-multiple-access (SDMA) system and investigate its dependence with respect to different decoding schemes, terminal positions, and receiver numbers. Inner and outer capacity boundaries for joint decoding and independent decoding are presented, along with physical explanations as to how these boundaries can be achieved. We show that exploitation of the spatial diversity not only increases the overall achievable rates of both joint and independent decoding, but also closes the gap between their corresponding capacity regions, thus bringing the performance of the low-cost independent decoding scheme close to that of the optimal joint decoding. Practical issues of optimum projection and power control are also addressed