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Transactions: WSEAS TRANSACTIONS ON COMMUNICATIONS
Transactions ID Number: 32-824
Full Name: Jie Wang
Position: Student
Age: ON
Sex: Female
Address: University of Electronic Science and Technology of China
Country: CHINA
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E-mail address: wehco@hotmail.com
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Title of the Paper: An Interference Suppression Scheme for MIMO-OSTBC System
Authors as they appear in the Paper: Jie Wang, Zhonghao Zhang, Yuehuan Gong, Tao Liu
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Number of paper pages: 10
Abstract: Multiple Input Multiple Output (MIMO) technique is considered as a cost-effective and promising technique for the next generation wireless system. Orthogonal Space-Time Block Codes (OSTBC) scheme is one of the most important coding schemes for MIMO system. The performance of an MIMO system using OSTBC (MIMO-OSTBC), however, degrades significantly in presence of strong interferences. In this paper, an interference suppression scheme for MIMO-OSTBC system in strong interference scenario is presented. The proposed scheme is based on simplified Maximum Likelihood (ML) decoding and noise subspace projection. The scheme has the following advantages: realizing ML decoding of the OSTBC and greatly reducing searching calculations by simple linear processing; avoiding matrix-inversion computation needed in ordinary suppression schemes through noise subspace projection. The paper also discusses the method of obtaining the efficient channel state information (CSI) needed in th!
e proposed scheme in strong interference scenario. Simulation results are given to verify the interference suppression ability of the proposed scheme and our theoretical analysis. Compared with other suppression scheme, the proposed scheme has better SER performance and is more flexible in practical applications.
Keywords: MIMO, OSTBC, ML Decoding, Interference Suppression, Noise Subspace Projection
EXTENSION of the file: .doc
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