Title :
An effect of a DS-SSMA system on narrow-band communication systems using frequency region in common and its rejection method
Author :
Kominami, Masanobu ; Ikuta, Satoshi ; Nakai, Tomoo ; Kusak, H.
Author_Institution :
Dept. of Electr. Eng., Osaka Prefecture Univ., Japan
Abstract :
When a DS-SSMA communication system uses in common the frequency region which narrow-band communication systems have used, the interference power falling on the narrow-band systems from the SS system should be considered. We propose a method that rejects the interference signal component on the transmitting side of the SS system and the transmission signals of the narrow-band systems on the receiving side of the SS system. We clarify the relationship between the signal-to-noise power ratio of the SS system with these band rejection filters and the ratio of narrow bandwidth to the chip rate, and show that prediction error filters are useful to the rejection filters
Keywords :
band-stop filters; filtering theory; interference suppression; multi-access systems; pseudonoise codes; radiofrequency interference; spread spectrum communication; DS-SSMA system; band rejection filter; band rejection filters; chip rate; frequency region; interference power; interference signal rejection; narrow bandwidth; narrow-band communication systems; prediction error filters; rejection filters; signal-to-noise power ratio; transmission signals; Finite impulse response filter; Frequency estimation; IIR filters; Interference; Laboratories; Narrowband; Satellite communication; Signal to noise ratio; Spread spectrum communication; Transmitters;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1994. IEEE ISSSTA '94., IEEE Third International Symposium on
Conference_Location :
Oulu
Print_ISBN :
0-7803-1750-5
DOI :
10.1109/ISSSTA.1994.379532
