The improvement of symbol rate estimation by the wavelet transform

被引：0

作者：

Xu, J ^{[1
]}

Wang, FP ^{[1
]}

Wang, ZJ ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

2005 INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CIRCUITS AND SYSTEMS, VOLS 1 AND 2, PROCEEDINGS: VOL 1: COMMUNICATION THEORY AND SYSTEMS | 2005年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The symbol rate estimator by the wavelet transform proposed in [1, 2] suffered from difficulties of choosing wavelet scales and weak ability of anti-noise. In this paper we proposed an improved version of such estimator. The main modification of our algorithm is that we move the carrier frequency of received waveform to zero before wavelet transform, i.e. we extract the symbol rate from the WT magnitudes of the base-band modulated signal instead of that of the MF signals. We find that with this modification there will be no invalid wavelet scales as occurred in [1] and choosing large scale not only reduce the additive noise, but also enhance the strength of desired spike series, which remarkably improve the anti-noise ability of the estimator. Simulation results verified the effectiveness of our algorithm.

引用

页码：100 / 103

页数：4