Analysis of a fixed-complexity sphere decoding method for spatial multiplexing MIMO

Authors:
M. Haridim;H. Matzner;V. Neder;D. Ezri
Affiliations:
Department of Communication Engineering, Holon Institute of Technology, Holon, Israel;Department of Communication Engineering, Holon Institute of Technology, Holon, Israel;Runcom Technologies LTD, Rishon Lezion, Israel;Runcom Technologies LTD, Rishon Lezion, Israel
Venue:
WSEAS TRANSACTIONS on COMMUNICATIONS
Year:
2009

Citing 1
Cited 2

Introduction to Space-Time Wireless Communications

Introduction to Space-Time Wireless Communications

An efficient MIMO detection algorithm employed in imperfect noise estimation

WSEAS TRANSACTIONS on COMMUNICATIONS
An efficient QR-based selection criterion for selecting an optimal precoding matrix employed in a simplistic MIMO detection

WSEAS Transactions on Signal Processing

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Abstract

A new detection algorithm for decoding multiple-input multiple-output (MIMO) transmission is proposed and analyzed. The method is based on combining sphere decoding (SD) and zero forcing (ZF) techniques. The proposed method performs a fixed number of operations to detect the signal, independent of the noise level, and hence provides a fixed complexity near optimal performance. The algorithm is especially suited for systems with a large number of transmit antennas and allows efficient implementation in hardware. The high efficiency of this algorithm is obtained by limiting the number of overall SD iterations. Moreover, in the proposed method matrices with high condition number are more likely to undergo SD.