Title :
Spread spectrum demodulator using block signal processing
Author :
Kajiwara, A. ; Nakagawa, Masao
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
Abstract :
A direct-sequence spread-spectrum (DS-SS) demodulator using block signal processing is presented. The proposed DS-SS signal processing is unlike the conventional DS-SS demodulators, which use real time signal processing. The signal is modulated quasi-coherently and stored in the memory. After extracting matched-pulse timing and estimating carrier offset, the signal is demodulated. Incoming data, therefore, are demodulated without being lost by the initial-acquisition time, and the proposed DS-SS demodulator can provide high data transmission efficiency
Keywords :
demodulators; signal processing; spread spectrum communication; DS-SS demodulator; block signal processing; carrier offset estimation; data transmission efficiency; direct-sequence spread-spectrum; matched-pulse timing; memory; quasicoherent demodulator; Data communication; Data mining; Demodulation; Frequency estimation; Interference; Phase estimation; Radio network; Signal processing; Spread spectrum communication; Timing;
Conference_Titel :
Communications, 1991. ICC '91, Conference Record. IEEE International Conference on
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0006-8
DOI :
10.1109/ICC.1991.162486
