Title :
A spectrally efficient narrowband mobile radio system for voice and data communication
Author :
Stern, Harold P.
Author_Institution :
Dept. of Electr. Eng., Alabama Univ., AL, USA
Abstract :
The author proposes a narrowband integrated voice/data mobile radio system which triples current voice traffic capacity and simultaneously provides capacity for mobile data communications such as mobile data terminals, automatic vehicle location, and mobile facsimile by utilizing the silence gaps inherent in speech. The system is designed to fit within the narrowband 25-kHz channels in the 450- and 800-MHz frequency bands and can replace existing private land mobile radio systems with minimum impact. The centerpiece of the system design is an evolutionary switching technique known as packetized data, voice dedicated (PDVD) burst switching, which allows transmission of data within the silence gaps inherent in speech. Simulation results for various voice and data traffic loads show the flexibility and efficiency of the proposed narrowband integrated voice/data mobile radio system
Keywords :
channel capacity; circuit switching; data communication systems; mobile radio systems; packet switching; voice communication; 25 kHz; 450 MHz; 800 MHz; TDM; UHF; integrated voice/data system; packetised data voice dedicated burst switching; spectrally efficient narrowband mobile radio system; traffic capacity; Burst switching; Data communication; Facsimile; Frequency; Land mobile radio; Narrowband; Packet switching; Speech; Telecommunication traffic; Vehicles;
Conference_Titel :
Southeastcon '92, Proceedings., IEEE
Conference_Location :
Birmingham, AL
Print_ISBN :
0-7803-0494-2
DOI :
10.1109/SECON.1992.202280
