The application of SHARF to adaptive removal of TV ghosting
John R. Treichler, Michael G. Larimore, C.R. Johnson, S. Wood · 2005
In previous papers the authors have developed and characterized SHARF and HARF, algorithms for adaptive IIR digital filters. This paper considers a practical problem in which adaptive IIR filtering can be applied to advantage: the removal of multi-path effects from television video ("ghosting"). The problem is motivated, a solution based on adaptive IIR filtering is developed, and simulation results are presented. Also discussed are several analytical results developed in this inquiry, including the formulation and proof of a complex data and coefficient version of SHARF (and HARF), and a treatment of the effects of additive noise.