Simulation and Realization of Narrow-Band Interference Suppression Technology Using IIR Filter

Ping Hua Zhang; Li Xin Tan; Xiu Liang Huang

doi:10.4028/www.scientific.net/AMM.427-429.965

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 427-429Simulation and Realization of Narrow-Band...

Simulation and Realization of Narrow-Band Interference Suppression Technology Using IIR Filter

Abstract:

An application of a second-order adaptive lattice IIR notch filter for rejection of NBI in direct sequence spread spectrum system (DSSS) is studied . Closed-form analytical expressions for signal-to-noise ratio (SNR) improvement factor and bit error ratio (BER) of the system are derived. The performances of the algorithm have been researched and simulated in MATLAB. The adaptive filter is designed and implemented on FPGA, which is simple to realize. It is shown by the test on hardware circuit that the filter had a capacity of about 21dB for NBI rejection which satisfies the requirement.

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Periodical:

Applied Mechanics and Materials (Volumes 427-429)

Pages:

965-969

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.427-429.965

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Online since:

September 2013

Authors:

Ping Hua Zhang*, Li Xin Tan, Xiu Liang Huang

Keywords:

Direct Sequence Spread Spectrum System (DSSS), FPGA, Narrow-Band Interference (NBI)

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* - Corresponding Author

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