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Tone Interference Cancellation Algorithm for Direct-Sequence Spread-Spectrum Systems  

Lee, Yong-Wook (Department of Electronics and Computer Engineering, Chungnam National University)
Kang, Dong-Hoon (Department of Electronics and Computer Engineering, Chungnam National University)
Park, Hyo-Bae (Department of Electronics and Computer Engineering, Chungnam National University)
Oh, Wang-Rok (Department of Electronics and Computer Engineering, Chungnam National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.8, 2009 , pp. 10-15 More about this Journal
Abstract
In this paper, we propose a frequency-domain tone interference cancellation algorithm for direct-sequence spread spectrum systems. In the previously proposed frequency-domain interference cancellation algorithms, the interference signal is estimated and compensated in the frequency-domain and then, with IFFT (inverse Fourier transform), the compensated frequency-domain signal is transformed to the time domain signal for the remaining receiver operations. Unlike the previous works, the proposed algorithm does not requires IFFT and thus, the proposed algorithm not only shows the virtually identical performance but also requires lower hardware complexity compared to the previous works.
Keywords
direct-sequence spread spectrum; tone interference cancellation; fast Fourier transform;
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