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September 24, 2014

Dr. Al-Naffouri’s work on impulse noise in DSL systems is among IEEE TCOM’s most downloaded papers for 2014

Dr. Tareq Y. Al-Naffouri, published a paper entitled “Impulse Noise Estimation and Removal for OFDM systems” in IEEE Transactions on Communication (IEEE TCOM) in March 2014. In this paper, an efficient method is proposed to estimate and mitigate the effect of impulsive noise, a limiting factor in the performance of digital subscriber line (DSL) and power line communication (PLC) systems.

Specifically, modeling the impulsive noise as a sparse signal in time domain, the proposed algorithm utilizes the guard band null subcarriers, available in DSL and PLC systems, for estimating the sparse impulse noise signal and cancelling its effect. Instead of using the conventional computationally complex compressive sensing scheme based on convex relaxation (CR), the proposed method jointly exploits the specific structure of this problem and the available a priori information for sparse signal recovery. The computational complexity of the proposed algorithm is very competitive with respect to CR based schemes and other state-of-the-art methods including orthogonal matching pursuit (OMP) and fast Bayesian matching pursuit (FBMP).

IEEE TCOM is the top-most journal in the area of communication. This work was done in close collaboration with his ex-student Ahmed Abdul Quadeer, now a PhD student at Hong Kong University of Science & Technology, and Giuseppe Caire, Professor in Electrical Engineering department at University of Southern California. This work was one of the most downloaded TCOM papers in April and May 2014.

Paper details:

T. Y. Al-Naffouri, A. A. Quadeer, and G. Caire, "Impulse noise estimation and removal for OFDM systems", IEEE Transactions on Communication, vol. 62, no. 3, pp. 976-989, March 2014.  Download PDF