正交空時分組碼最大比率合并接收組合形式的配方方法
A squaring method of the maximal-ratio receive combining scheme for orthogonal space-time block codes
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摘要: 該文研究了尋找正交空時分組碼輸出信號最大比率合并組合形式的配方方法,證明了一般正交空時分組碼都可以采用配方的方法得到最大接收比率的組合形式。由于正交性,各輸出支路可以獨立地進行極小距離判決譯碼,其譯碼性能與用從各接收天線得到的接收矢量直接進行極大似然譯碼的性能完全相同,而譯碼復雜度卻大為降低。Abstract: A squaring method to find the maximal-ratio receive combining scheme of the orthogonal space-time block codes is presented. Furthermore, it is proved that this method can be used as a general method for the orthogonal space-time block codes. Considering the orthogonality, the minimum distance decisions for each output branch can be made respectively. The performance using this method is the same as that using the maximum likelihood decoding criterion while the complexity of decoding is much lower.
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V. Tarokh, N. Seshadri, A. R. Calderbank, Space-time codes for high data rate wireless communication, performance criterion and code construction, IEEE Trans. on IT, 1998, 44(2), 744-765.[2]S.M. Alamouti, A simple transmit diversity technique for wireless communications, IEEE J. on SAC,1998, 16(8), 1451-1458.[3]V. Tarokh, H. Jafarkhani, A. R. Calderbank, Space-time block codes from orthogonal designs.IEEE Trans. on IT, 1999, 45(5), 1456-1467.[4]V. Tarokh, H. Jafarkhani, A. R. Calderbank, Space-time block coding for wireless communications, performance results, IEEE J. on SAC, 1999, 17(3), 451-460. -
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