[1]杨庆,陈强,梁鉴如,等. 基于DHT的FSK数字化解调算法研究[J].计算机技术与发展,2014,24(09):73-76.
　YANG Qing,CHENG Qiang,LIANG Jian-ru,et al. Study on Digital Demodulation Algorithm for FSK Signal Based on DHT[J].,2014,24(09):73-76.
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 基于DHT的FSK数字化解调算法研究()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
24
期数:
2014年09期
页码:
73-76
栏目:
智能、算法、系统工程
出版日期:
2014-09-10

文章信息/Info

Title:
 Study on Digital Demodulation Algorithm for FSK Signal Based on DHT
文章编号:
1673-629X（2014）09-0073-04
作者:
 杨庆; 陈强; 梁鉴如; 吴庐山
 上海工程技术大学
Author(s):
  YANG Qing; CHENG Qiang; LIANG Jian-ru; WU Lu-shan
关键词:
 ; Hartley变换; 数字化解调; 频移键控; 误码率
Keywords:
DHT; digital demodulation; FSK; error bit rate
分类号:
TN911
文献标志码:
A
摘要:
 文中对基于DHT的二进制频移键控( FSK)信号的数字化解调算法进行研究。 FSK信号的码元分为过渡区和稳定区，而在实际解调时只考虑稳定区中的若干个载波的采样值作Hartley变换运算，计算出对应于1码和0码载波频率的幅值信息，根据幅值的大小来判决，从而恢复数字信号。在高斯噪声背景下，对该解调算法的误码性能进行了分析。位同步也可以通过Hartley变换来实现。理论分析和仿真结果表明该解调算法具有计算量小、抗干扰性能好等优点。
Abstract:
 It studies DHT-based digital demodulation algorithm for FSK signal in this paper. As the yard wave of FSK signal can be di-vided into transitional section and steady section,in the actuality,only samples of several carriers in steady section are used to do DHT op-eration to calculate the amplitude of the carrier frequencies of code 1 and code 0,and then recover the digital signal by judging the ampli-tudes. The the BER performance of the algorithm in presence of Gauss white noise is analyzed. Bit synchronization can also be achieved by doing DHT. Theoretical analysis and simulation results show this method is of little calculation and good noise-resisting performance.

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更新日期/Last Update: 2015-04-01