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arXiv cs/0504017cs.ITmath.IT
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一种新的SISO算法及其在Turbo均衡中的应用

A new SISO algorithm with application to turbo equalization

Marcin Sikora, Daniel J. Costello

摘要:

在本文中,我们提出了一种新的软输入软输出均衡算法,提供了非常好的性能/复杂度权衡。它遵循BCJR算法的结构,但在前向递归过程中动态地构造一个简化的网格。在每个网格部分中,仅保留具有最强前向度量的M个状态,类似于M-BCJR算法。然而,与M-BCJR不同的是,剩余的状态不会被删除,而是合并到幸存的状态中。新算法与减少状态的BCJR算法相比,具有更好的性能和更大的灵活性,特别是对于高阶调制的系统。

英文摘要:

In this paper we propose a new soft-input soft-output equalization algorithm, offering very good performance/complexity tradeoffs. It follows the structure of the BCJR algorithm, but dynamically constructs a simplified trellis during the forward recursion. In each trellis section, only the M states with the strongest forward metric are preserved, similar to the M-BCJR algorithm. Unlike the M-BCJR, however, the remaining states are not deleted, but rather merged into the surviving states. The new algorithm compares favorably with the reduced-state BCJR algorithm, offering better performance and more flexibility, particularly for systems with higher order modulations.

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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