Novel cyclic energy spectrum detection method for deep space communications

被引：0
作者：
机构：
[1] State Key Lab. of Integrated Service Networks, Xidian Univ.
[2] Beijing Research Institute of Telemetry
来源：
Ren, G. (glren@mail.xidian.edu.cn) | 1600年 / Science Press卷 / 40期
关键词：
Cyclic energy spectrum; Deep space communication; Signal detection;
D O I：
10.3969/j.issn.1001-2400.2013.04.017
中图分类号：
学科分类号：
摘要：
According to the extremely low signal-to-noise ratio (SNR) of the received signal and the large Doppler frequency shift in the deep space communication systems, a novel detection method based on the cyclic energy spectrum is proposed. Firstly, the distribution of energy of the cycle frequency slices in the cyclic spectrum is defined as the cyclic energy spectrum. Then we correlate the cyclic energy spectrum of the received signal with that of the transmitted signal as the detecting statistic, which can determine whether the signal is present or not. Simulation results show that the proposed detector can obtain a gain under an SNR of more than 6.5 dB compared with the existing detectors, and is robust to the Doppler frequency shift.
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页码：102 / 107
页数：5
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