Anti-interference performance optimization of Zigbee system from shaping filter

2015 IEEE International Conference on Information and Automation Pub Date : 2015-10-01 DOI:10.1109/ICINFA.2015.7279757

Jianxin Zhang, X. Lei

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引用次数: 1

Abstract

Now, for Zigbee having many advantages, it can be used in more and more Machine to Machine or Man (M2M) technologies. Zigbee system has two mainly interference. One is inter symbol interference (ISI) that comes from other symbols of the same signal. Another is Co-channel interference (CCI) that comes from other techniques. Communication system mainly performance indexes are validity and reliability. In order to improve Zigbee system reliability, it is important to improve ability of anti-CCI and eliminate ISI with little or no validity reduced. In digital communication system, bit error rate (BER) is used to measure reliability, and data rate, spectrum availability radio are used to measure validity. The paper analyses Zigbee BER compositions under the influence of CCI and ISI. Results show that BER is related to the function of shaper (shaper, shaping filter). Later we propose that in order to reduce BER, using Raised Cosine Shaping Filter (RC) replaced Half Sine Wave Shaping filter (HSW). The reasons are RC having better characteristics in anti-CCI and eliminate ISI, and it will not change Zigbee advantages. The system simulation results prove it.

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从整形滤波器优化Zigbee系统抗干扰性能

现在，由于Zigbee具有许多优点，它可以越来越多地应用于机器对机器或人(M2M)技术中。Zigbee系统的干扰主要有两个方面。一种是来自同一信号的其他符号的符号间干扰(ISI)。另一个是来自其他技术的同信道干扰(CCI)。通信系统的主要性能指标是有效性和可靠性。为了提高Zigbee系统的可靠性，提高抗cci能力，在不降低有效性的前提下消除ISI至关重要。在数字通信系统中，用误码率(BER)来衡量可靠性，用数据率、频谱可用性来衡量有效性。本文分析了CCI和ISI对Zigbee误码率的影响。结果表明，误码率与整形器(整形器、整形滤波器)的功能有关。为了降低误码率，我们提出用凸余弦整形滤波器(RC)代替半正弦波整形滤波器(HSW)。究其原因，RC在抗cci和消除ISI方面具有更好的特性，不会改变Zigbee的优势。系统仿真结果证明了这一点。

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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2015 IEEE International Conference on Information and Automation

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