Title :
Performance improvement of RAKE receiver for a multicode DS-CDMA system with multistage interference cancellation detectors
Author :
Kim, Su Il ; Lee, Hwang Soo
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejeon, South Korea
Abstract :
To improve the performance of the parallel interference cancellation (PIC) detector in a multicode DS-CDMA system, we propose a RAKE receiver called the successive multipath noise canceller (SMNC), with accurate channel estimation as the initial stage. The pilot multipath noise can be reconstructed and removed. The accurate channel estimates without interchannel interference due to the PIC even for multicode channels can also be used in demodulating the symbols. Computer simulation results show that a considerable performance improvement is achieved by the use of the SMNC
Keywords :
adjacent channel interference; code division multiple access; demodulation; interference suppression; intersymbol interference; land mobile radio; multipath channels; multiuser channels; parameter estimation; radio receivers; signal detection; spread spectrum communication; ISI; RAKE receiver; channel estimation; computer simulation results; demodulation; interchannel interference; intersymbol interference; multicode DS-CDMA system; multistage interference cancellation detectors; parallel interference cancellation detector; performance improvement; pilot multipath noise reconstruction; successive multipath noise canceller; third generation mobile communication systems; Channel estimation; Detectors; Downlink; Fading; Interchannel interference; Interference cancellation; Intersymbol interference; Multiaccess communication; Multipath channels; Noise cancellation;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818479
