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Closed-loop Grouped Space–Time Block Code: Encoding, Decoding and Codeword Selection

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Abstract

A design of closed-loop grouped space–time block codes (G-STBCs) including encoding, decoding and codeword selection is proposed for the downlink over Rayleigh flat-fading channels. In particular, at the transmitter, the antenna array is partitioned into a number of groups, each of which is encoded based on the orthogonal STBC (O-STBC). At the receiver, by exploiting the algebraic structure of orthogonal codes, a low-complexity, in recursion form, group-wise ordered successive interference cancellation (OSIC) detector is developed. Moreover, the G-STBC codeword is designed and a G-STBC codeword selection criterion that minimizes the BER performance under the constraints of a fixed spectral efficiency and total transmit power is then proposed. The selection index of the G-STBC codeword and the associated modulation type are determined at the receiver and conveyed to the transmitter with a limited feedback overhead to choose an appropriate mode for transmission. Finally, Numerical examples are used for illustrating the performance of the proposed G-STBCs, OSIC based detection and G-STBC codeword selection criterion.

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Authors and Affiliations

  1. Information and Communications Research Laboratories, New Mobile Access Technology Department, Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan 310, ROC

    Chung-Lien Ho

  2. Department of Communication Engineering and Microelectronics and Information Systems Research Center, National Chiao Tung University, Hsinchu, Taiwan 300, ROC

    Fan-Shuo Tseng & Ta-Sung Lee

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  1. Chung-Lien Ho
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  2. Fan-Shuo Tseng
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  3. Ta-Sung Lee
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Correspondence to Fan-Shuo Tseng.

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Ho, CL., Tseng, FS. & Lee, TS. Closed-loop Grouped Space–Time Block Code: Encoding, Decoding and Codeword Selection. Wireless Pers Commun 44, 423–453 (2008). https://doi.org/10.1007/s11277-007-9366-0

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  • DOI: https://doi.org/10.1007/s11277-007-9366-0

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