Feedback Bandwidth Allocation for Users under Different Types of Channels in Multi-Antenna Systems

This paper considers an optimized limited feedback design for a multi-antenna system serving multiple users under different types of channels: Rayleigh distributed and line-of-sight distributed channels. Since the users are asymmetric, we propose an optimized feedback bandwidth allocation scheme for users under a total feedback rate constraint. The allocation scheme is designed according to the long-term channel type information of users, and thus it can be efficiently implemented. Numerical results verify the effectiveness of our proposed scheme.

[1]  Nihar Jindal,et al.  Beamforming with Finite Rate Feedback for LOS MIMO Downlink Channels , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[2]  Elza Erkip,et al.  On beamforming with finite rate feedback in multiple-antenna systems , 2003, IEEE Trans. Inf. Theory.

[3]  Robert W. Heath,et al.  Grassmannian beamforming for multiple-input multiple-output wireless systems , 2003, IEEE Trans. Inf. Theory.

[4]  Andrea J. Goldsmith,et al.  Optimality of zero-forcing beamforming with multiuser diversity , 2005, IEEE International Conference on Communications, 2005. ICC 2005. 2005.

[5]  Andrea J. Goldsmith,et al.  Capacity limits of MIMO channels , 2003, IEEE J. Sel. Areas Commun..

[6]  Ali Abdi,et al.  The Ricean K factor: estimation and performance analysis , 2003, IEEE Trans. Wirel. Commun..

[7]  I. Sarris,et al.  Ricean K-factor measurements in a Home and an Office Environment in the 60 GHz Band , 2007, 2007 16th IST Mobile and Wireless Communications Summit.

[8]  Andrea J. Goldsmith,et al.  On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming , 2006, IEEE Journal on Selected Areas in Communications.

[9]  Bhaskar D. Rao,et al.  Transmit beamforming in multiple-antenna systems with finite rate feedback: a VQ-based approach , 2006, IEEE Transactions on Information Theory.

[10]  Y.-F. Huang,et al.  Feedback Constraints for Adaptive Transmission , 2007, IEEE Signal Processing Magazine.

[11]  Nihar Jindal,et al.  MIMO broadcast channels with finite rate feedback , 2006, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[12]  Andrea J. Goldsmith,et al.  Finite-Rate Feedback MIMO Broadcast Channels with a Large Number of Users , 2006, 2006 IEEE International Symposium on Information Theory.

[13]  Yongzhe Xie,et al.  Optimal bandwidth allocation for the data and feedback channels in MISO-FDD systems , 2006, IEEE Transactions on Communications.

[14]  Jeffrey G. Andrews,et al.  Space Division Multiple Access With a Sum Feedback Rate Constraint , 2007, IEEE Transactions on Signal Processing.

[15]  Zhi Ding,et al.  Optimisation of limited feedback design for heterogeneous users in multi-antenna downlinks , 2009, IET Commun..