CSS系统鲁棒准确的数据包检测与频偏补偿

2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies Pub Date : 2009-10-11 DOI:10.1109/UBICOMM.2009.42

Seong-Hyun Jang, Seung-Han Baik, Yeong-Sam Kim, J. Chong

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引用次数: 3

摘要

本文针对无线个人区域网络(WPAN)标准IEEE 802.15.a啁啾扩频(CSS)提出了一种新的鲁棒分组检测和频偏补偿结构。所提出的结构同时具有交叉相关和自相关的优点。相互关联对于去除CSS系统中附加的边带噪声和在过滤后的输出值中找到尖锐的峰值是有用的。此外，我们使用自相关来抑制频率偏移和初始信道相位的影响。仿真结果表明，该方法对频偏具有较强的鲁棒性，可以在很低的信噪比下检测到信号的存在。

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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Robust and Accurate Packet Detection and Frequency Offset Compensation for CSS System

In this paper, we propose a new robust packet detection and frequency offset compensation structure for IEEE 802.15.4a chirp spread spectrum (CSS) which is a standard for wireless personal area network (WPAN). The proposed structure takes benefits of both cross- and auto-correlation. Cross-correlation is useful to remove additional side band noise in the CSS system and to find sharp peaks among filtered output values. In addition, we use the auto-correlation in order to suppress the effect of frequency offset and the initial channel phase. Simulation results show that the proposed procedure is robust to the frequency offset, and can detect the presence of a signal in very low signal to noise ratio (SNR).

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2009 Third International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies

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