PLC信道中自适应循环前缀长度OFDM的位加载算法

2009 IEEE International Symposium on Power Line Communications and Its Applications Pub Date : 2009-05-08 DOI:10.1109/ISPLC.2009.4913425

S. D'Alessandro, A. Tonello, L. Lampe

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引用次数: 18

摘要

当部署循环前缀(CP)时，OFDM系统的可实现速率不一定是最大的，只要信道脉冲响应。即使对于较短的CP长度，也会发生符号间和载波间的干扰，缩短的CP提供的速率增益可能超过干扰造成的损失。在本文中，我们解决了CP长度自适应的问题，并提出了实用的包含CP自适应的比特加载算法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Bit-loading algorithms for OFDM with adaptive cyclic prefix length in PLC channels

The achievable rate of OFDM systems is not necessarily maximized when deploying a cyclic prefix (CP) as long as the channel impulse response. Even though for shorter CP lengths both inter-symbol and inter-carrier interference do occur, the rate gain offered by a shortened CP may exceed the losses due to interference. In this paper we address the problem of CP length adaptation and we propose practical bit-loading algorithms that include the CP adaptation.

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来源期刊

2009 IEEE International Symposium on Power Line Communications and Its Applications

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