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

Volume

3

fYear

2002

fDate

2002

Firstpage

792

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on

Print_ISBN

0-7803-7627-7

Type

conf

DOI

10.1109/ISSSTA.2002.1049368

Filename

1049368