Title :
A new technique for WCDMA downlink interference cancellation
Author :
Liu, Derong ; Zare, Hossein
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Chicago, IL, USA
Abstract :
In this paper, we present a simple interference cancellation technique for the downlink of wideband code-division multiple-access (WCDMA) systems in multipath environment. With the same knowledge required by a RAKE receiver, the present method acts as an equalizer and cancels the interfering multipath signals from the received signal to retrieve the orthogonality property of the received signal. The present receiver has a simple structure and it has significant performance gain against the RAKE receiver. In addition, the noise enhancement is negligible when there is a line of sight path or the channel power delay profile has exponential decaying form.
Keywords :
broadband networks; code division multiple access; equalisers; interference suppression; multipath channels; radio links; radio receivers; radiofrequency interference; RAKE receiver; WCDMA; channel power delay profile; downlink interference cancellation; equalizer; line of sight path; noise enhancement; wideband code-division multiple-access systems; Downlink; Equalizers; Fading; Interference cancellation; Multiaccess communication; Multipath channels; Noise cancellation; Performance gain; RAKE receivers; Wideband;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9335-X
DOI :
10.1109/WCNM.2005.1544111