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An enhanced impulse burst cancellation method using pilots and soft bits in OFDM based systems

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3 Author(s)
Hazmi, A. ; Inst. of Commun. Eng., Tampere Univ. of Technol., Finland ; Rinne, J. ; Renfors, M.

We introduce a new method to enhance the tolerability of the pilot based impulse noise canceller presented in J. Rinne et al. (2002) in time and frequency selective environments. The method uses a quantized value of the carrier deviations caused by the presence of the impulsive interference to weight the soft bits in the digital terrestrial receiver. Hence more reliability against the impulse burst is achieved. The performance of the new method is compared to conventional receiver structures in different fading environments. Ricean and Rayleigh static channel cases are used to evaluate the system performance in bit error rate (BER) sense. Also a mobile channel case with moderate Doppler spread is considered.

Published in:

Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on

Date of Conference:

11-14 July 2004