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: | 1-三月-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 |
顯示於類別: | 期刊論文 |