Conference paper
A beamformer for CDMA with enhanced near-far resistance
The spatio-temporal array-receiver (STAR) achieves good performance in CDMA with multiple receiving antennas where the interference can be characterized as AWGN uncorrelated with the signal. To enhance its near-far resistance in correlated noise environments, we introduce optimal combining of the spatio-temporal components.
Nearly as good performance can be obtained with a low complexity adaptive beamformer combination of the antenna and multipath diversity branches. Simulation results indicate that the modified STAR manifests significant gain in near-far resistance over its original version, more so with more branches.
They also suggest that exploiting additional temporal correlation fingers as interference references can further improve near-far resistance in poor diversity situations.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 1999 |
| Pages: | 1583,1584,1585,1586,1587 |
| Proceedings: | IEEE International Conference on Communications 1999 |
| ISBN: | 078035284x , 9780780352841 and 078035284X |
| Types: | Conference paper |
| DOI: | 10.1109/ICC.1999.765491 |
AWGN AWGN channels Adaptive arrays Additive white noise Antenna arrays Diversity reception Gaussian noise Interference Multiaccess communication Receiving antennas Working environment noise antenna diversity array processing cellular CDMA system cellular radio co-channel interference cochannel interference code division multiple access correlated noise environments correlation methods diversity branches diversity reception generalized sidelobe canceller interference interference suppression low complexity adaptive beamformer modified STAR multipath channels multipath diversity multiple receiving antennas multiuser channels near-far resistance optimal combining performance receiving antennas simulation results space-time adaptive processing spatio-temporal array-receiver spatio-temporal components temporal correlation fingers wireless mobile communication systems
