Title :
Interference suppression in multiple-input single-output antenna systems for WCDMA downlink transmissions
Author :
Wang, Haifeng ; Lilleberg, Jorma
Author_Institution :
Nokia Mobile Phones, Oulu, Finland
Abstract :
In multiple-input single-output (MISO) antenna systems the multiple access interference and cochannel interference is enhanced by multi-antenna transmission, multiple users and multipath fading channel. The performance of MISO systems can be even worse than single-input single-output antenna systems by using a conventional RAKE receiver especially in heavily-loaded systems with many simultaneous accessing users. An advanced MISO receiver using one-shot parallel interference cancellation is proposed for WCDMA downlink transmissions. With the powerful continuous common pilot channel specified in the 3G standardization, mobile stations with a simple FIR filter can achieve very accurate channel estimates. The result is that the enhanced interference can be efficiently suppressed and the transmit diversity can be restored.
Keywords :
3G mobile communication; FIR filters; Rayleigh channels; antenna arrays; broadband networks; cochannel interference; code division multiple access; diversity reception; filtering theory; interference suppression; multipath channels; multiuser channels; radio links; radio networks; radio receivers; 3G standardization; FIR filter; MISO antenna systems; MISO receiver; MISO system performance; RAKE receiver; WCDMA downlink transmission; channel estimates; cochannel interference; continuous common pilot channel; heavily-loaded systems; interference suppression; mobile stations; multipath Rayleigh fading channel; multipath fading channel; multiple access interference; multiple-input single-output antenna systems; one-shot parallel interference cancellation; single-input single-output antenna systems; transmit diversity; Downlink; Fading; Interchannel interference; Interference suppression; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers; Receiving antennas; Transmitting antennas;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1049368
