Cooperative Spatial Multiplexing with Hybrid Channel Knowledge
IZS '06 Proceedings of the 2006 International Zurich Seminar on Communications
Design and analysis of transmit-beamforming based on limited-rate feedback
IEEE Transactions on Signal Processing
Downlink joint rate and power allocation in cellular multirate WCDMA systems
IEEE Transactions on Wireless Communications
Joint rate and power allocation for cognitive radios in dynamic spectrum access environment
IEEE Transactions on Wireless Communications - Part 2
Game Theoretical Power Control for Open-Loop Overlaid Network MIMO Systems with Partial Cooperation
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Space-time block codes from orthogonal designs
IEEE Transactions on Information Theory
Distributed Downlink Beamforming With Cooperative Base Stations
IEEE Transactions on Information Theory
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Coordinated multi-point (CoMP) transmission is being considered for next-generation cellular systems to improve cell-edge throughput. In this paper, we consider two-sector CoMP system that cooperates to serve a cell-edge user. For this we first propose hybrid inter-sector CoMP transmission scheme A, which transmits data to the cell-edge user using both closed-loop and open-loop signaling to reduce feedback overhead. In closed loop, one base station (BS) serves the cell-edge user by using beamforming vectors, while the other BS serves using Alamouti codes in open loop. Next, we propose hybrid inter-sector CoMP transmission scheme B using Alamouti-coded beamforming vectors and Alam-outi codes, respectively, in order to decrease decoding complexity. The proposed hybrid inter-sector CoMP schemes causes a slight degradation in BER performance, compared to coherent inter-sector CoMP. However, the hybrid CoMP schemes requires less feedback information to be suitable for real cellular systems.