Title :
Blind space-time channel estimation for DS-CDMA with aperiodic spreading code
Author :
Jiang, Bofeng ; Wu, Xiaojun ; Yin, Qinye
Author_Institution :
Sch. of Electron. & Inf. Eng., Xi´´an Jiaotong Univ., China
Abstract :
The space-time channel can be described by a vector channel impulse response (VCIR). Estimating the VCIR is very important for smart antenna systems. Based on multiuser decorrelation, a blind VCIR estimation closed form method is proposed for CDMA with an aperiodic spreading code. The new method has the ability to resist the near-far effect. Computer simulation demonstrates that the accuracy of the VCIR estimated by the new method can meet the need for extracting DOA and time delay
Keywords :
adaptive antenna arrays; code division multiple access; decorrelation; delay estimation; direction-of-arrival estimation; mobile radio; multiuser channels; spread spectrum communication; transient response; 3G mobile communication system; DOA estimation; DS-CDMA; aperiodic spreading code; blind space-time channel estimation; multiuser decorrelation; near-far effect; smart antenna systems; third generation mobile communication system; time delay estimation; vector channel impulse response; Antenna arrays; Channel estimation; Decorrelation; Delay effects; Direction of arrival estimation; Fading; Mobile antennas; Multiaccess communication; Multipath channels; Space technology;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944609
