Title :
Fast cell search during PN code phase acquisition using adaptive filters in AWGN environment
Author :
Lo, Fook L. ; Sheikh, Asrar U H
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
This paper presents a new method of acquiring the phase of the PN sequence used in CDMA systems. The new method uses an adaptive filter where the filter taps contain the results of the sum of a block of chips. These contents are then compared with similar summation of the locally generated sequence. The acquisition peak is detected by minimizing the mean square error between the received and the locally generated sequences. The analysis of the acquisition system is presented, and analytical and simulation results are compared
Keywords :
AWGN; adaptive filters; adaptive signal processing; code division multiple access; filtering theory; least mean squares methods; multiuser channels; pseudonoise codes; search problems; spread spectrum communication; synchronisation; AWGN environment; CDMA systems; PN code phase acquisition; PN sequence; acquisition detection; acquisition system analysis; adaptive FIR filter; fast cell search; filter taps; locally generated sequence summation; mean square error minimisation; received spreading sequence; simulation results; AWGN; Adaptive filters; Analytical models; Bit error rate; Circuits; Clocks; Finite impulse response filter; Frequency estimation; Mean square error methods; Multiaccess communication;
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Conference_Location :
Rio de Janeireo
Print_ISBN :
0-7803-5796-5
DOI :
10.1109/GLOCOM.1999.831680
