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arXiv 1011.0474cs.ITmath.IT
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一种新的延迟容忍空时码的构造

Construction of New Delay-Tolerant Space-Time Codes

Mireille Sarkiss, Ghaya Rekaya-Ben Othman, Mohamed Oussama Damen, Jean-Claude Belfiore

摘要:

完美空时码(STC)是多输入多输出(MIMO)系统中的最优编码。它们基于循环划分代数(CDA),是全速率、全分集码,具有非消失行列式(NVD),从而实现分集复用折衷(DMT)。此外,这些代码导致了最佳的分布式空时码应用于协作网络的假设下,完美的同步中继。然而,当引入延迟时,它们就会失去多样性,因此不容忍延迟。本文利用完全码的循环除代数,构造了在同步情形下保持与完全码相同性质的新码。此外,这些码在异步传输中保持其全分集。

英文摘要:

Perfect Space-Time Codes (STC) are optimal codes in their original construction for Multiple Input Multiple Output (MIMO) systems. Based on Cyclic Division Algebras (CDA), they are full-rate, full-diversity codes, have Non-Vanishing Determinants (NVD) and hence achieve Diversity-Multiplexing Tradeoff (DMT). In addition, these codes have led to optimal distributed space-time codes when applied in cooperative networks under the assumption of perfect synchronization between relays. However, they loose their diversity when delays are introduced and thus are not delay-tolerant. In this paper, using the cyclic division algebras of perfect codes, we construct new codes that maintain the same properties as perfect codes in the synchronous case. Moreover, these codes preserve their full-diversity in asynchronous transmission.

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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