A frequency offset compensation method for ultra narrowband digital wireless modems

2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI:10.1109/PIMRC.2004.1373922

Youngjun Chong, Sung-jin You, Min-Soo Kang, Myung‐Sun Song, Seung-Hyeub Oh

引用次数: 2

Abstract

We evaluate the performance of the digital modulation schemes described in the APCO Project 25 FDMA specifications which can be used for applying the ultra-narrowband technology to the simple two-way radio systems, and discuss difficulties in the DSP implementation of the systems. We analyze the effect on the systems' BER performance of the frequency-offset between the transmitter and receiver oscillators. And we present a frequency offset compensation method for improving the system performance. With the frequency offset compensation method implemented in the systems using DSP, the Eb/No performance degradation of about 1.0 dB was occurred at the BER of 10/sup -3 /for 10 % of frequency offset.

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一种用于超窄带数字无线调制解调器的频偏补偿方法

我们评估了APCO项目25 FDMA规范中描述的数字调制方案的性能，这些方案可用于将超窄带技术应用于简单的双向无线电系统，并讨论了DSP实现系统的困难。分析了收发振荡器之间的频偏对系统误码率性能的影响。为提高系统性能，提出了一种频偏补偿方法。采用DSP实现的频率偏移补偿方法，当误码率为10/sup -3 /时，当频率偏移量为10%时，系统的Eb/No性能下降约1.0 dB。

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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来源期刊

2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)

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