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Low-Complexity Semi-Coherent MIMO Systems
Mohd Hairi HALMI
Mohamad Yusoff ALIAS
Teong Chee CHUAH
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/04/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
MIMO, STBC, semi-coherent, detector, decoder,
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A semi-coherent multiple-input multiple-output (MIMO) scheme, which only requires one of its receivers to operate coherently while others can be non-coherent, is proposed. In this scheme, the information symbols at the non-coherent receivers are estimated with the aid of a coherent receiver through a covariance estimator, thus allowing signals to be decoded coherently in the final stage. Results show that the proposed system is able to provide performance on par with that of the more complicated fully coherent MIMO systems.