Foundations and Trends® in Networking
Throughput of cellular systems with conferencing mobiles and cooperative base stations
EURASIP Journal on Wireless Communications and Networking - Theory and Applications in Multiuser/Multiterminal Communications
On the performance of random vector quantization limited feedback beamforming in a MISO system
IEEE Transactions on Wireless Communications
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
The Capacity Region of the Gaussian Multiple-Input Multiple-Output Broadcast Channel
IEEE Transactions on Information Theory
Broadcast Channels With Cooperating Decoders
IEEE Transactions on Information Theory
IEEE Communications Magazine
On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming
IEEE Journal on Selected Areas in Communications
Relaying power allocation with user-cooperation for OFDM-based MISO broadcast channels
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
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This paper presents a user-cooperation scheme with limited feedback in a broadcast channel. The proposed scheme allows mobile stations to forward received messages over finite-capacity orthogonal channels, known as conferencing. In addition, the proposed scheme jointly uses the feedback from mobile stations to mitigate multi-user interference by choosing the best beamforming vectors from a finite-sized codebook. As a result, a multi-user broadcast channel is located between a point-to-point multiple-input multiple-output channel and a multi-user multiple-input single-output channel. The former is where full coherent cooperation among receiver antennas is allowed, and the latter is where no cooperation among mobile stations is assumed. Then, this paper analyzes the relation between the amounts of user-cooperation and limited feedback, and shows a trade-off between the relative use of each. Simulation results verify the advantage of cooperation and feedback as complementary technologies in wireless cellular networks.