一种波束成形的分组空时编码系统检测算法

Abstract

Abstract:

According to the characteristic of group space-time coded systems, a new detecting algorithm based on beamforming is proposed. By utilizing the unitary matrix, the transmitter decouples the input signal into spatial orthogonal beam directions with the matched filters in beam directions in the receiver, and the gain obtained by each data block can be equivalent to the sum of the projection from the channel matrix to the corresponding beam directions. Beam selection is adopted to maximize the minimum gains of all the blocks, which can improve the system diversity gain efficiently. Moreover, a multiple-rate group space-time coded scenario is presented. Theoretical analysis and simulation results reveal that the proposed algorithm has a better capacity and error performance with lower decoding complexity.

Key words: beamforming, group space-time code, beam selection, diversity gain

CLC Number:

TN929.5

References

［1］Dai L, Letaief K B. An Efficient Detector for Combined Space-time Coding and Layered Processing［J］. IEEE Trans on Communications, 2005, 53(9): 1438-1442.
［2］Park S H, Lee I. Unitary Precoding Techniques Based on Transmit-MRC for MIMO Wireless Systems ［C］//IEEE International Conference on Communications (ICC'08). Beijing: IEEE, 2008: 1215-1219.
［3］Stankovic V, Haardt M. Generalized Design of Multi-User MIMO Precoding Matrices［J］. IEEE Trans on Wireless Communications, 2008, 7(3): 953-961.
［4］Choi L U, Murch R D. A Transmit Preprocessing Technique for Multiuser MIMO Systems Usinga Decomposition Approach［J］. IEEE Trans on Wireless Communications, 2004, 3(1): 20-24.
［5］Ariyavisitakul S L, Zheng J, Kim J. Subspace Beamforming with Capacity-Balancing Channel Decomposition［C］//IEEE International Symposium on Information Theory (ISIT 2008). Canada: IEEE, 2008: 1012-1015.
［6］Chen Runhua, Jr Heath R W, Andrews J G. Transmit Selection Diversity for Unitary Precoded Multiuser Spatial Multiplexing Systems With Linear Receivers［J］. IEEE Trans on Signal Processing, 2007, 55(3): 1159-1171.
［7］Tarokh V, Seshadri N, Calderbank A R. Space-time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Construction［J］. IEEE Trans on Inf Theory, 1998, 44(2): 744-765.
［8］Tarokh V, Jafarkhani H, Calderbank A R. Space-time Block Codes from Orthogonal Designs［J］. IEEE Trans on Inf Theory, 1999, 45(5): 1456-1467.
［9］Liang X. Orthogonal Designs with Maximum Rates［J］. IEEE Trans on Inf Theory, 2003, 49(10): 2468-2503.
［10］Golub G H, Van Loan C F. Matrix Computations［M］. 3rd ed. Baltimore: The John Hopkins Univ Press, 1996.
［11］Coppersmith D, Winograd S. Matrix Multiplication Via Arithmetic Progressions［J］. J Symbolic Comput, 1990, 9(3): 251-280.

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Beamforming detector for group space-time coded systems

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