Group-Based Space-Time Multiuser Detection with User Sharing

To reduce the complexity of space-time multiuser detection, it has been proposed recently to exploit the spatial dimension by forming groups of users and apply the detection individually to each group. In this work we propose a new space-time receiver structure based on the group-optimal MMSE linear detector along with a new grouping algorithm that respects practical hardware limitations. Furthermore, an extension of the proposed structure which allows non-mutually exclusive grouping is presented. The simulation results show that the proposed reduced-complexity receiver structure provides a bit error rate (BER) performance close to the full linear MMSE multiuser detector.

[1]  Emanuel Falkenauer,et al.  Genetic Algorithms and Grouping Problems , 1998 .

[2]  Roy D. Yates,et al.  Combined multiuser detection and beamforming for CDMA systems: filter structures , 2002, IEEE Trans. Veh. Technol..

[3]  Martin Haardt,et al.  Comparative study of joint-detection techniques for TD-CDMA based mobile radio systems , 2001, IEEE J. Sel. Areas Commun..

[4]  L. Godara.  Application of antenna arrays to mobile communications. II. Beam-forming and direction-of-arrival considerations , 1997, Proc. IEEE.

[5]  Zhigang Cao,et al.  Space-time turbo multiuser detection for coded MC-CDMA , 2005, IEEE Transactions on Wireless Communications.

[6]  John Thompson,et al.  Multiuser detection for CDMA antenna array receivers using spatial equivalence classes , 2000 .

[7]  P. W. Baier,et al.  Zero forcing and minimum mean-square-error equalization for multiuser detection in code-division multiple-access channels , 1996 .

[8]  Aylin Yener,et al.  Rank constrained temporal-spatial matrix filters for CDMA systems , 2004, IEEE Transactions on Wireless Communications.

[9]  Kyung Sup Kwak,et al.  Multiuser detection scheme using adaptive antenna array over Rayleigh fading channels , 2000, VTC2000-Spring. 2000 IEEE 51st Vehicular Technology Conference Proceedings (Cat. No.00CH37026).

[10]  Sergio Verdu,et al.  Multiuser Detection , 1998 .

[11]  Mahesh K. Varanasi,et al.  Group detection for synchronous Gaussian code-division multiple-access channels , 1995, IEEE Trans. Inf. Theory.

[12]  Charles R. Johnson,et al.  Matrix analysis , 1985, Statistical Inference for Engineers and Data Scientists.

[13]  B. Champagne,et al.  Group optimal space-time MUD with beamforming , 2005, 2005 IEEE 61st Vehicular Technology Conference.

[14]  Michael L. Honig,et al.  Adaptive reduced-rank interference suppression based on the multistage Wiener filter , 2002, IEEE Trans. Commun..

[15]  Xiaodong Wang,et al.  Group-blind multiuser detection for uplink CDMA , 1999, 1999 IEEE 49th Vehicular Technology Conference (Cat. No.99CH36363).

[16]  Guangguo Bi,et al.  A dynamic groupwise successive interference cancellation array receiver scheme for DS-CDMA systems , 2000, 2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540).