Title :
Interference mitigation using transmitter filters in CDMA systems
Author_Institution :
Dept. of Electr. & Electron. Eng., Adelaide Univ., SA, Australia
Abstract :
We consider the use of transmitter filters as pre-equalizers at the base station to mitigate the interference in code division multiple access (CDMA) systems over multipath fading channels. It is shown that the transmitter filters can mitigate the. interference and thereby the capacity can be improved. The minimum variance distortionless response (MVDR) beamforming technique in antenna arrays is utilized to find the coefficients of the interference mitigation (IM) transmitter filters. To design the IM transmitter filters, we assume that the channel information is available
Keywords :
antenna arrays; array signal processing; code division multiple access; delay filters; equalisers; fading channels; interference suppression; mobile radio; multipath channels; radio transmitters; CDMA systems; MVDR beamforming; antenna arrays; base station; capacity; code division multiple access; interference mitigation; minimum variance distortionless response; multipath fading channels; pre-equalizers; spread spectrum techniques; transmitter filters; Antenna arrays; Array signal processing; Base stations; Fading; Filters; Information filtering; Interference; Multiaccess communication; Transmitters; Transmitting antennas;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965425
