Title :
A diversity co-channel interference canceller for AMPS cellular systems
Author :
Carter, Alan ; Hilborn, Derek ; Secord, Norman ; Abu-Dayya, Adnan
Author_Institution :
Adv. Wireless Technol. Group, Nortel, Ottawa, Ont., Canada
Abstract :
In cellular communication systems co-channel interference (CCI) is a major capacity limiting factor. A number of system characteristics (e.g. voice quality and dropped call rate) can be improved individually or in combination by providing co-channel interference cancellation, at either the base station or mobile. This paper describes the development and performance evaluation of separate speech and data, two antenna co-channel interference canceller (CCIC) algorithms for the Advanced Mobile Phone Service (AMPS). In the presence of a single dominant AMPS interferer, the speech CCIC algorithm provides carrier to interference (CIR) gains of between 3 and 14 dB, dependant on the fading rate, as compared to a switched diversity scheme for the same average output signal to noise plus distortion ratio (SINAD). For similar channel conditions the data CCIC algorithm provides CIR gains in excess of 10 dB for a target bit error rate (BER) of 1%
Keywords :
adaptive antenna arrays; cellular radio; cochannel interference; diversity reception; interference suppression; AMPS cellular systems; Advanced Mobile Phone Service; CCI; CIR gains; bit error rate; carrier to interference gains; cellular communication; data algorithm; diversity co-channel interference canceller; fading rate; performance evaluation; signal to noise plus distortion ratio; speech algorithm; two antenna diversity receiver; Base stations; Bit error rate; Fading; Interchannel interference; Interference cancellation; Mobile antennas; Mobile handsets; Radiofrequency interference; Speech analysis; Speech enhancement;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686466
