Limited channel feedback for coordinated beamforming under SINR requirements

We consider bit allocation for channel state information (CSI) feedback in coordinated beamforming (CB) systems. The optimization problem under consideration is to minimize the total transmission power subject to the target signal to interference and noise ratio (SINR) constraints. We obtain a suboptimal solution to the problem that provides closed-form expressions for the total feedback rate and the feedback rates of each user and its channels. The advantage of the proposed scheme over the methods with equally distributed feedback rates among the users and/or channels is demonstrated by computer simulation: the CB system employing the proposed scheme causes less outage with less transmission power.

[1]  Jeffrey G. Andrews,et al.  Adaptive Spatial Intercell Interference Cancellation in Multicell Wireless Networks , 2009, IEEE Journal on Selected Areas in Communications.

[2]  Antonia Maria Tulino,et al.  Network MIMO With Linear Zero-Forcing Beamforming: Large System Analysis, Impact of Channel Estimation, and Reduced-Complexity Scheduling , 2010, IEEE Transactions on Information Theory.

[3]  Ieee Microwave Theory,et al.  IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems Draft Amendment: Management Information Base Extensions , 2007 .

[4]  Zhisheng Niu,et al.  Distributed Adaptation of Quantized Feedback for Downlink Network MIMO Systems , 2011, IEEE Transactions on Wireless Communications.

[5]  Reinaldo A. Valenzuela,et al.  Network coordination for spectrally efficient communications in cellular systems , 2006, IEEE Wireless Communications.

[6]  Inkyu Lee,et al.  Novel Feedback Bit Allocation Methods for Multi-Cell Joint Processing Systems , 2012, IEEE Transactions on Wireless Communications.

[7]  Kaibin Huang,et al.  Stochastic Control of Event-Driven Feedback in Multiantenna Interference Channels , 2011, IEEE Transactions on Signal Processing.

[8]  Wei Xu,et al.  Two-Phase Multiuser Scheduling for Multiantenna Downlinks Exploiting Reduced Finite-Rate Feedback , 2010, IEEE Transactions on Vehicular Technology.

[9]  David Gesbert,et al.  Efficient Selective Feedback Design for Multicell Cooperative Networks , 2011, IEEE Transactions on Vehicular Technology.

[10]  Stephen P. Boyd,et al.  Convex Optimization , 2004, Algorithms and Theory of Computation Handbook.

[11]  Andrea J. Goldsmith,et al.  Multi-Antenna Downlink Channels with Limited Feedback and User Selection , 2007, IEEE Journal on Selected Areas in Communications.

[12]  Satoshi Nagata,et al.  Coordinated multipoint transmission and reception in LTE-advanced: deployment scenarios and operational challenges , 2012, IEEE Communications Magazine.

[13]  Robert W. Heath,et al.  Adaptive Bit Partitioning for Multicell Intercell Interference Nulling With Delayed Limited Feedback , 2011, IEEE Transactions on Signal Processing.

[14]  Kwang Bok Lee,et al.  Channel Feedback Optimization for Network MIMO Systems , 2012, IEEE Transactions on Vehicular Technology.

[15]  Wei Yu,et al.  Bit Allocation Laws for Multiantenna Channel Feedback Quantization: Multiuser Case , 2012, IEEE Transactions on Signal Processing.

[16]  Wei Yu,et al.  Two-stage channel feedback for beamforming and scheduling in network MIMO systems , 2012, 2012 IEEE International Conference on Communications (ICC).