Title :
Spectrum sharing between a fixed-service microwave system and a cellular CDMA mobile radio system
Author :
Poppen, Dipl-Ing Dirk
Author_Institution :
Inst. fuer Nachrichtentechnik, Tech. Univ. Braunschweig, Germany
Abstract :
Spectrum sharing of an outdoor cellular code division multiple access (CDMA) mobile radio system (bandwidth 1.25 MHz) with a digital German fixed service microwave system (bandwidth/channel 29 MHz) in the 2000-MHz frequency domain is discussed. The calculation of mutual interference situations is based on a model comprising a part of a cellular mobile radio system with a homogeneous hexagonal cell structure and a fixed service radio link. The system coexistence under some worst-case assumptions is analyzed, and signal-to-interference ratios in different interfering situations are calculated. The results show that under the condition of a careful choice of the CDMA system parameters, coexistence seems to be possible, even in worst-case situations
Keywords :
cellular radio; code division multiple access; land mobile radio; microwave links; radio spectrum management; radiofrequency interference; 1.25 MHz; 2 GHz; UHF; cellular CDMA mobile radio system; code division multiple access; fixed service microwave system; model; mutual interference; signal-to-interference ratios; spectrum sharing; system coexistence; Bandwidth; Directive antennas; Interference; Land mobile radio; Microwave antennas; Multiaccess communication; Radio link; Radio transmitters; Signal analysis; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 1993., 43rd IEEE
Conference_Location :
Secaucus, NJ
Print_ISBN :
0-7803-1267-8
DOI :
10.1109/VETEC.1993.507536
