线性调频信号的级联随机共振数字化接收

侯成郭; 罗柏文; 李地

doi:10.11999/JEIT 141496

线性调频信号的级联随机共振数字化接收

doi: 10.11999/JEIT 141496

1.
(解放军信息工程大学信息系统工程学院郑州 450002) ②(解放军69260部队乌鲁木齐 830000)

基金项目:

国家自然科学基金(60472064, 61201380)

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- 被引次数: 0
出版历程
- 收稿日期: 2014-11-26
- 修回日期: 2015-08-25
- 刊出日期: 2015-12-19

Cascaded Stochastic Resonance for Digitized Receiving of Linear Frequency Modulation Signal

1.
(Information System Engineering Institute, PLA Information Engineering University, Zhengzhou 450002, China)
2.
(Troops 69260 of PLA, Urumqi 830000, China)

Funds:

The National Natural Science Foundation of China (60472064, 61201380)

摘要

摘要: 为消除随机共振系统的窄带限制，实现线性调频信号的高增益数字化接收，该文提出一种基于样点频率设定的数字化接收方法。该方法直接将线性调频信号通过数字化的样点筛选、频率设定过程，变换为适配于后续级联随机共振系统的单频信号。从而顺利完成宽带接收信号中噪声能量向信号能量的转化。理论和仿真实验表明该算法可实现线性调频的解调，其处理增益较现有算法提高约2 dB。
- 无线通信 /
- 随机共振 /
- 级联 /
- 线性调频 /
- 数字化
Abstract: In order to eliminate the narrowband limit of stochastic resonance system, and to complete the digitized receiving of linear frequency modulation signal with high gain, a method based on the frequency setting of received digital samples is proposed. In this method, the linear frequency modulation is directly sent to the digitized samples flitting, frequency setting process, and is converted to a single frequency signal, which fits in the subsequent cascaded stochastic resonance system. As a result, the noise energy in broadband signal is converted to signal energy. Theory and simulation results show that the algorithm can demodulate the linear frequency modulation signal, and its processing gain is higher than the existing algorithms by about 2 dB.
- Wireless communication /
- Stochastic resonance /
- Cascaded /
- Linear Frequency Modulation (LFM) /
- Digitized

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参考文献(20)

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