Low-complexity variable step-size adaptive equalizers for digital communications

Summary from only given. In this paper, we propose novel low-complexity adaptive channel estimation techniques for mobile wireless channels in presence of Rayleigh fading, carrier frequency offsets (CFO) and random channel variations. We show that the selective partial update of the estimated channel tap-weight vector offers a better tradeoff between the performance and computational complexity, compared to the full update of the estimated channel tap-weight vector. We demonstrate the usefulness of proposed methods via simulation studies.