Title :
Fast blind signature waveform tracking under imperfect carrier recovery in DS-CDMA systems
Author :
Zhao, Zheng ; Yin, Qinye ; Feng, Aigang ; Deng, Ke
Author_Institution :
Inst. of Inf. Eng., Xi´´an Jiaotong Univ., China
fDate :
6/24/1905 12:00:00 AM
Abstract :
In this paper, we propose a subspace tracking method for blind signature waveform estimation. In practice, the signature waveform can not change suddenly. So, we can take use of the past information of the signal subspace to update the signal subspace gradually for blind signature waveform estimation. After the algorithm proposed in this paper, the computation complexity is reduced substantially.
Keywords :
code division multiple access; mobile radio; spread spectrum communication; tracking; DS-CDMA systems; blind signature waveform estimation; computation complexity reduction; imperfect carrier recovery; past information; signal subspace updating; subspace tracking method; Base stations; Binary phase shift keying; Costs; Direction of arrival estimation; Doppler shift; Multiaccess communication; Oscillators; Phase shift keying; Pulse shaping methods; Singular value decomposition;
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
DOI :
10.1109/VTC.2002.1002807
