Space-time Interference Suppression Based on Blind Sub-band Adaptive Array Processing

In the traditional Space-Time Adaptive Processing (STAP) of satellite smart antenna terminals, adaptive algorithms require signal information so that they have poor real-time performance and the array processing techniques are not only of high complexity but also suffer from inadequate anti-jammer c...

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Bibliographic Details
Published in:Dianxun Jishu / Telecommunications Engineering 2014-08, Vol.54 (8), p.1117-1122
Main Authors: Lai, Ping, Lu, Rui-Min, Ma, Shi-Wang, Shen, Jun
Format: Article
Language:Chinese
Subjects:
Adaptive algorithms
Algorithms
Arrays
Blinds
Complexity
Interference
Jamming
Real time
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Summary:In the traditional Space-Time Adaptive Processing (STAP) of satellite smart antenna terminals, adaptive algorithms require signal information so that they have poor real-time performance and the array processing techniques are not only of high complexity but also suffer from inadequate anti-jammer capability. In order to solve these problems, a sub-band blind adaptive array processing algorithm is proposed in this paper, which applies the space-time interference suppression technology to Direct Sequence Spread Spectrum (DSSS) system. Compared with the pure space-domain processing, sub-band adaptive array (SBAA) greatly increases the freedoms of degree. It also simplifies algorithm complexity relative to Tapped -delay-line adaptive array (TDLAA) structure of traditional STAP. The proposed sub-band blind adaptive array algorithm using Exponential Linearly Constrained constant Modulus Algorithm (EXP-LC-CMA) can provide higher convergence speed and better convergence accuracy with low algorithm complexity. Furthe
ISSN:1001-893X
DOI:10.3969/j.issn.1001-893x.2014.08.015