Title :
Simultaneous estimation of code and frequency of DS/SS signals of multiple-LEO-satellite communication systems
Author :
Ishizu, Mihoko ; Katayama, Masaaki ; Yamazato, Takaya ; Ogawa, Akira
Author_Institution :
Dept. of Inf. Electron., Nagoya Univ., Japan
Abstract :
We consider a receiver with satellite diversity by using DS/SS signals from different LEO satellites. Since the signals from the different LEO satellites may have different frequency offsets due to the Doppler effect, we propose an acquisition scheme which can estimate the code timings and carrier frequencies of these signals at once. We evaluate the characteristics of the proposed scheme by the mean acquisition time
Keywords :
Doppler effect; Gaussian noise; diversity reception; frequency estimation; probability; pseudonoise codes; radio receivers; radiofrequency interference; satellite communication; signal detection; spread spectrum communication; synchronisation; timing; white noise; DS/SS signals; Doppler effect; PN sequence; acquisition scheme; carrier frequencies; code division multiplexing; code timing estimation; detection probability; frequency estimation; frequency offsets; mean acquisition time; multiple LEO satellite communication systems; performance; receiver; satellite diversity; satellite interference; simultaneous estimation; synchronization; Artificial satellites; Delay; Doppler effect; Frequency estimation; Frequency synchronization; Interference; Low earth orbit satellites; Satellite communication; Signal to noise ratio; Timing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.627040
