Title :
On performance study of data based multiuser detection methods for uplink long-code CDMA systems
Author :
Liu, Ping ; Xu, Zhengyuaii ; Yu, Nenghai
Author_Institution :
Dept. of Electr. Eng., California Univ., Riverside, CA, USA
Abstract :
In a long-code uplink CDMA system, subspace method is recently proposed to estimate all users´ multipath parameters and noise power based on the correlation matrix of whitened data. In this paper, we focus on performance of three typical linear receivers, known as zero-forcing (ZF), minimum mean-square-error (MMSE), and RAKE receivers, constructed from the estimated channels and noise power. All analyses are performed from a perturbation perspective and verified by our numerical examples.
Keywords :
channel estimation; code division multiple access; correlation methods; error statistics; least mean squares methods; multipath channels; multiuser detection; numerical analysis; radio receivers; BER; CDMA system; MMSE; RAKE receivers; bit error rate; channel estimation; correlation matrix; linear receivers; long-code uplink; minimum mean square error; multipath parameter; multiuser detection; noise power; subspace method; zero-forcing; Additive white noise; Detectors; Fading; Gaussian noise; Information processing; Multiaccess communication; Multipath channels; Multiuser detection; RAKE receivers; Signal to noise ratio;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Print_ISBN :
0-7803-7822-9
DOI :
10.1109/PIMRC.2003.1259281
