Title :
Suppression of adjacent-channel interference in digital radio by equalization
Author :
Petersen, Brent R. ; Falconer, David D.
Author_Institution :
Zurich Res. Lab., Ruschlikon, Switzerland
Abstract :
The ability of a linear or decision-feedback equalizer to suppress adjacent-channel interference in digital radio systems is described. The emphasis is on values among transmitter bandwidth, receiver bandwidth, carrier spacing, diversity, and cochannel interference which provide the best opportunities for interference suppression. Through analysis of a generalized zero-forcing linear equalizer and calculations of equalizer minimum-mean-square performance, it is shown that a substantial amount of adjacent-channel interference can be suppressed. The ability to suppress the interference is enhanced by using equalizers with wide receiver bandwidths because they are able to exploit the cyclostationary properties of the adjacent-channel interference
Keywords :
digital radio systems; equalisers; feedback; interference suppression; radiofrequency interference; adjacent-channel interference; carrier spacing; cochannel interference; cyclostationary properties; decision-feedback equalizer; digital radio systems; diversity; equalization; interference suppression; linear feedback equaliser; minimum-mean-square performance; receiver bandwidth; transmitter bandwidth; Bandwidth; Baseband; Crosstalk; Decision feedback equalizers; Digital communication; Interchannel interference; Interference suppression; Laboratories; Performance analysis; Radiofrequency interference;
Conference_Titel :
Communications, 1992. ICC '92, Conference record, SUPERCOMM/ICC '92, Discovering a New World of Communications., IEEE International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-0599-X
DOI :
10.1109/ICC.1992.268201
