Accession Number : AD0739596

Title :   The Kalman Filter for the Equalization of Digital Communications Channel,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y SYSTEMS ENGINEERING DIV

Personal Author(s) : Lawrence,R. ; Kaufman,H.

Report Date : 1971

Pagination or Media Count : 17

Abstract : Consideration is given to the use of the discrete Kalman filter as an equalizer for digital binary transmission in the presence of noise and intersymbol interference. When the channel is modeled as an n tap transversal filter, the Kalman filter assumes a similar form with 'feed forward and feedback'. It is shown how the Kalman filter can be used to estimate both the tap weights and the binary signal. Computer results on a fixed six tap channel show that use of the six tap Kalman filter yields a considerably smaller error probability than when a conventional transversal equalizer with 15 taps is used. Limited computer studies on the same channel, assumed to be initially unknown, suggest that the Kalman filter is capable of converging rapidly in the adaptive mode. (Author)

Descriptors :   (*CODING, *PULSE COMMUNICATIONS), DATA TRANSMISSION SYSTEMS, DIGITAL SYSTEMS, WHITE NOISE, MATHEMATICAL MODELS

Subject Categories : Cybernetics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE