Improved Signal Detection Scheme for Co-Channel Interference Based on Fourth - order Cyclic Cumulants

DOI

10.2991/icmeit-17.2017.118How to use a DOI?

Keywords

Co-Channel Multi-Signal; Signal Detection; Cyclic Cumulants.

Abstract

Signal detection and the number of signal sources are the basis of dealing with the problem of co-channel multi-signal. An algorithm based on fourth-order cyclic cumulant is proposed for multi-signal detection of co-channel and signal source number estimation. Firstly, the fourth-order cyclic cumulant of the received signal is calculated. The discrete spectral lines appear at the cyclic frequency, which is related to the signal carrier frequency. Then, the discrete spectral lines are extracted based on the morphological method. The number of discrete lines for signal detection and signal source number estimates. The algorithm does not need to set the threshold value, can carry on the signal detection and estimate the number of signal sources at the same time. For at most three arbitrary types of power mixed signals, such as BPSK, QPSK and MQAM, etc., in the signal to noise ratio of about 5dB signal detection and signal source number of the correct rate is greater than 90%, and the algorithm has good robustness to spectral overlapping degree.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Gaofeng Fan
AU  - Houde Quan
AU  - Hao Zhang
PY  - 2017/05
DA  - 2017/05
TI  - Improved Signal Detection Scheme for Co-Channel Interference Based on Fourth - order Cyclic Cumulants
BT  - Proceedings of the 2nd International Conference on Mechatronics Engineering and Information Technology (ICMEIT 2017)
PB  - Atlantis Press
SP  - 643
EP  - 647
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmeit-17.2017.118
DO  - 10.2991/icmeit-17.2017.118
ID  - Fan2017/05
ER  -