Method and apparatus for improving the performance of pilot symbol assisted receivers in the presence of narrowband interference

Alan James Coulson, Lower Hutt (NZ)

Industrial Research Limited, Parnell, Auckland(NZ)

Tuesday, March 29, 2011

A method for reducing interference from at least one narrowband interferer in a pilot symbol assisted receiver (10) includes the steps of; receiving a stream of received data, passing the stream of received data through an adaptive filter that reduces interference from any narrowband interferer, passing the filtered data through a correlator (7, 8) arranged to detect pilot symbols, when a pilot symbol is detected passing the stream of received data to a receiving apparatus without first passing the received data through the adaptive filter (3), and wherein the pilot symbol includes one or more repetitions of known data or pseudo noise.