Pilot-Channel Aided SIC for Uplink WCDMA Systems over Multipath Fading Channels
| Paper File | Download Paper File | | Appear In | ECTI Transaction EEC (ECTI Transaction EEC) | | Publication Date | 01/08/2005 - 28/08/2005 | | Volume | 3 | | Pages | 140 - 147 | | No | 2 | | Author 1 | Chih-hsuan Tang | | Author 2 | Cho-ho Wei |
Abstract
In this paper, we examine the performance of
the pilot-channel aided successive interference cancellation
scheme in asynchronous WCDMA systems
over multipath fading channels. Three types of
cancellation-ordering method are compared where
the cancellation order is decided based on either average
power or instantaneous RAKE output strength
with various updating rate. The scheme performs
pilot-channel signal removal before data detection
to alleviate the interferences from other users’ pilot
channels and thus can achieve better performance on
user data detection. With the investigation and comparison
through computer simulations, the scheme
with three types of ordering method are shown to
perform variously due to different grouping interval
and power distribution ratio over both AWGN and
Rayleigh fading channels. |
