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Non-cooperative detection of weak spread-spectrum signals in additive white Gaussian noise
A semi-blind method based on principal component analysis and sequence synchronisation is proposed to detect direct sequence spread-spectrum signals in a non-cooperative setting under low signal-to-noise ratio conditions. The intercepted signal is segmented to form a detection matrix from which a feature is extracted through cyclic shifting. Signal detection is then performed using a test statistic based on this feature. The carrier frequency and sequence duration of the signal to be detected are assumed known. Theoretical analysis and a computer simulation study show that the performance of the new detection method is superior to classic energy detection in an additive white Gaussian noise channel.
History
Publication title
Institution of Engineering and Technology CommunicationsVolume
6Issue
16Pagination
2513-2524ISSN
1751-8628Department/School
School of EngineeringPublisher
Institution of Engineering and TechnologyPlace of publication
UKRights statement
Copyright 2012 The Institution of Engineering and TechnologyRepository Status
- Restricted