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Optimum Equivalent Loading in Multi-Dimensional Transmission
IEEE Open Journal of the Communications Society ( IF 6.3 ) Pub Date : 2020-05-20 , DOI: 10.1109/ojcoms.2020.2995663
John M. Cioffi 1 , Peter S. Chow 1 , Kenneth J. Kerpez 1
Affiliation  

Loading methods for wireline and wireless transmission systems are explained and reviewed to allow examination of fundamental equivalences between approaches to optimum transmission with linear cross-dimensional interference. Shannon’s famous water-filling method is then re-interpreted by examining the difference between mutual information and the constellation size used on each tone. Results reinforce that highest performance in all methods retains use of Shannon’s water-filling. However, results also find that a constant-size constellation on all energized water-filling dimensions, when used with a good code and an appropriate joint maximum-likelihood decoder, is sufficient to approximate this highest performance. This means that tone-dependent constellation variation is not necessary, which increases receiver complexity but reduces the need for channel-state feedback. This then leads to some adaptive MCS (modulation and coding scheme) equivalent loading methods that can be applied generally to wireline and wireless transmission.

中文翻译:

多维传输中的最佳等效负载

解释并回顾了有线和无线传输系统的加载方法,以检查具有线性横截面干扰的最佳传输方法之间的基本等效性。然后,通过检查互信息和每个音调上使用的星座图大小之间的差异,重新诠释香农著名的注水方法。结果表明,所有方法中的最高性能都保留了香农的注水功能。但是,结果还发现,当与良好的代码和适当的联合最大似然解码器一起使用时,所有通电注水尺寸上的大小恒定的星座图足以近似此最高性能。这意味着不需要音调相关的星座变化,这增加了接收机的复杂性,但减少了对信道状态反馈的需求。然后,这导致了一些自适应的MCS(调制和编码方案)等效加载方法,这些方法通常可应用于有线和无线传输。
更新日期:2020-05-20
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