Noise cancellation and inverse filtering using a compact high-performance c.c.d. adaptive filter

This letter describes results obtained from a compact adaptive filter based on a charge-coupled device, programmable, analogue transversal filter. The adaptive algorithm used was the Widrow l.m.s. algorithm and results are presented for the 64-filter-point system used as a self-tuning filter, a noise canceller and as an inverse filter. The results illustrate the high quality of performance possible using this structure.