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arXiv 1204.5652cs.ITmath.IT
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利用时间正交脉冲整形降低空时分组码中的ML解码复杂度

ML Decoding Complexity Reduction in STBCs Using Time-Orthogonal Pulse Shaping

Rakshith Rajashekar, K. V. S. Hari

摘要:

空间键控(SSK)和空间调制(SM)系统采用时间正交脉冲成形(TOPS)滤波器来获得发射分集增益,本文针对这两种系统的最新发展,提出了一种用于空时分组码(STBC)的TOPS滤波器。我们表明,任何空时分组码的重量矩阵集划分成P个子集的等价关系称为公共支持关系下,可以通过适当地采用跨空间和时间的TOPS波形的P -组解码。此外,通过考虑一些著名的STBC在文献中,我们表明,他们的最大似然解码复杂度的顺序可以大大降低TOPS的应用。

英文摘要:

Motivated by the recent developments in the Space Shift Keying (SSK) and Spatial Modulation (SM) systems which employ Time-Orthogonal Pulse Shaping (TOPS) filters to achieve transmit diversity gains, we propose TOPS for Space-Time Block Codes (STBC). We show that any STBC whose set of weight matrices partitions into P subsets under the equivalence relation termed as Common Support Relation can be made P -group decodable by properly employing TOPS waveforms across space and time. Furthermore, by considering some of the well known STBCs in the literature we show that the order of their Maximum Likelihood decoding complexity can be greatly reduced by the application of TOPS.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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