Construction of quasi orthogonal STBC with minimum decoding complexity

In this paper, we formulate the algebraic structure of quasiorthogonal STBC with minimum decoding complexity (MDC-QOSTBC), whose maximum likelihood (ML) decoder only requires the joint detection of two real symbols, for any numbers of transmit antennas. We also propose a systematic method to constru...

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Bibliographic Details
Main Authors: Yuen, C., Guan, Y.L., Tjhung, T.T.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Computer science
control theory
systems
Exact sciences and technology
Filtering
Information theory
Information, signal and communications theory
Matched filters
Maximum likelihood decoding
Maximum likelihood detection
Nonlinear filters
Power distribution
Scalability
Telecommunications and information theory
Transmitting antennas
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Summary:In this paper, we formulate the algebraic structure of quasiorthogonal STBC with minimum decoding complexity (MDC-QOSTBC), whose maximum likelihood (ML) decoder only requires the joint detection of two real symbols, for any numbers of transmit antennas. We also propose a systematic method to construct an MDC-QOSTBC from an Orthogonal-STBC (O-STBC). The maximum code rate of the resultant MDC-QOSTBC is shown to be the same as that of the lower-order O-STBC used to construct it. We also find the optimum constellation rotation angle for the proposed MDC-QOSTBC construction to achieve full diversity and optimum coding gain. We can show that the proposed MDC-QOSTBC has more even power distribution over the transmit antennas, better scalability in adjusting the number of transmit antennas, and more superior decoding performance than the coordinate interleaved orthogonal design (CIOD) and asymmetric CIOD
DOI:10.1109/ISIT.2004.1365345