利用循环码降低OFDM技术的峰均功率比

2013 International Conference on Intelligent Systems and Signal Processing (ISSP) Pub Date : 2013-03-01 DOI:10.1109/ISSP.2013.6526909

R. Roshan, J. Jain, A. Soni

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引用次数: 2

摘要

峰均功率比(PAPR)是大多数多载波通信技术(如正交频分复用系统(OFDM))的主要缺点。OFDM由许多独立的调制子载波组成，因此这种信号的幅度可以有非常大的值。这些大的峰值增加了调制间失真的量，导致错误率的增加。本文讨论了编码率R为4/7和11/15的简单循环编码(CC)方案。所提出的编码方案对任意长度的数据序列都有较好的PAPR降低效果。对16点IFFT和64点IFFT的结果进行了验证和展示。在这个方案中，在数据位上增加一些额外的奇偶校验位。这些奇偶校验位最多可以纠正一个比特的错误。

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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Reduction of peak to average power ratio in OFDM technique by using cyclic codes

Peak-to-average power ratio (PAPR) is a major drawback in most multi-carrier communication techniques such as orthogonal frequency division multiplex system (OFDM). OFDM consists of lots of independent modulated subcarriers, as a result the amplitude of such a signal can have very large values. These large peaks increase the amount of inter-modulation distortion resulting in an increase in the error rate. In this paper we dealt with simple cyclic coding (CC) scheme having coding rates (R) of 4/7 and 11/15. The proposed coding scheme shows good PAPR reduction with any length of data sequence. The results are verified and shown for 16 point IFFT and 64 point IFFT. In this scheme add some extra parity bits to the data bits. These parity bits can correct up to one bit error.

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2013 International Conference on Intelligent Systems and Signal Processing (ISSP)

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