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Iterative tree search detection for MIMO wireless systems

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2 Author(s)
de Jong, Y.L.C. ; Commun. Res. Centre Canada, Ottawa, Ont., Canada ; Willink, T.J.

This paper presents a reduced-complexity soft-input soft-output detection scheme, called iterative tree search detection, for multiple-input multiple-output wireless communication systems employing turbo processing at the receiver. In this scheme, a reduced search space is selected with the aid of the M-algorithm, and QAM signal constellations with block partitionable labels are used in order to make the detection complexity per bit almost independent of the modulation order, as well as asymptotically linear in the number of transmit antennas. Results from computer simulations are presented which demonstrate the capability of the scheme to approach optimal performance at considerably reduced complexity.

Published in:

Communications, IEEE Transactions on  (Volume:53 ,  Issue: 6 )

Date of Publication:

June 2005

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