標題: Closed-loop grouped space-time block code: Encoding, decoding and codeword selection
作者: Ho, Chung-Lien
Tseng, Fan-Shuo
Lee, Ta-Sung
資訊工程學系
電信工程研究所
Department of Computer Science
Institute of Communications Engineering
關鍵字: multi-input multi-output (MIMO);grouped space-time block code (G-STBC);ordered successive interference canceller (OSIC);closed-loop
公開日期: 1-Mar-2008
摘要: 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.
URI: http://dx.doi.org/10.1007/s11277-007-9366-0
http://hdl.handle.net/11536/9642
ISSN: 0929-6212
DOI: 10.1007/s11277-007-9366-0
期刊: WIRELESS PERSONAL COMMUNICATIONS
Volume: 44
Issue: 4
起始頁: 423
結束頁: 453
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