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Tone-interference cancellation algorithm for direct-sequence spread-spectrum systems

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4 Author(s)
Yongwook Lee ; Div. of Electr. & Comput. Eng., Chungnam Nat. Univ. (CNU), Daejeon, South Korea ; Donghoon Kang ; Hyobae Park ; Wangrok Oh

In this paper, we propose a frequency-domain estimating and time-domain compensating tone interference (TI) cancellation algorithm for direct-sequence spread-spectrum systems. In the previous works, the interference signal is estimated and compensated in the frequency-domain and then, with IFFT (inverse fast 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 estimate the TI signals in frequency-domain and compensates the resulting estimated TI signals in time-domain and thus, does not requires IFFT. Hence, the proposed algorithm not only shows the virtually identical performance but also requires lower hardware complexity compared to the schemes proposed in the previous works.

Published in:

Anti-counterfeiting, Security, and Identification in Communication, 2009. ASID 2009. 3rd International Conference on

Date of Conference:

20-22 Aug. 2009

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