Signal Detection and Analysis of DTMF Receiver with Quick Fourier Transform

被引：0

作者：

Park, Min Ju ^{[1
]}

Lee, Sang Jin ^{[1
]}

Yoon, Dal Hwan ^{[1
]}

机构：

[1] Semyung Univ, Dept Elect Engn, Jechon 390711, Chung Buk, South Korea

来源：

IECON 2004: 30TH ANNUAL CONFERENCE OF IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOL 3 | 2004年

关键词：

DTMF; QFT; Power Twist; SNR;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The economical method for the signals detection of dual-tone multifrequency (DTMF) receiver is an important factor when developing cost-effective telecommunication equipment. Each channel of the digital switching system has independently a DTMF receiver, and it informs the detected signal to processors. The DTMF receiver uses DFT, FFT and Goertzel's algorithm Jar signal detection. In this work, a new method for peiformance evaluation and analysis Jar multifrequency (DTMF) receiver using QFT (Quick Fourier Transform) algorithm is proposed. The symmetric properties of the QFT basic function method has better performance on the less memory consumption and real time processing ability compared with conventional FFT, DFT and Goertzel algorithm ill the calculation of the number of floating-point operations. As shown ill the experimental results, it also demonstrates that the QFT algorithm consumes less memory and process the task at the real-time.

引用

页码：2058 / 2064

页数：7