Title :
Evaluation of VHF FM, SSB, and ACSSB radio systems in the interference context of the land mobile bands
Author :
Boucher, L. ; Hafez, H.
Author_Institution :
Commun. Res. Center, Ottawa, Ont., Canada
Abstract :
Experimental evaluation to compare VHF land-mobile FM, adjacent channel single sideband (ACSSB), and SSB systems is conducted. Information such as adjacent and cochannel protection ratios, reuse distances, audio frequency responses, etc., are obtained, and the main factors influencing the calculation of spectrum efficiency in the land mobile bands are determined. In relation to protection ratio measurements, conventional objective and subjective evaluation methods and interference criteria are evaluated. An objective method that produces results similar to the subjective method is derived. Factors influencing the introduction of ACSSB, SSB, or other technologies in the land mobile bands are presented
Keywords :
amplitude modulation; electronic equipment testing; frequency modulation; mobile radio systems; radiofrequency interference; ACSSB; SSB systems; VHF FM systems, adjacent channel protection ratio; adjacent channel single sideband; audio frequency responses; cochannel protection ratios; interference; land mobile bands; objective method; protection ratio measurements; radio systems; reuse distances; spectrum efficiency; subjective evaluation methods; Amplitude modulation; Channel spacing; Context; Environmental economics; Frequency modulation; Interference; Mobile communication; Protection; Systems engineering and theory; Testing;
Conference_Titel :
Vehicular Technology Conference, 1990 IEEE 40th
Conference_Location :
Orlando, FL
DOI :
10.1109/VETEC.1990.110328
