A system design for TDMA mobile radios

Author

Nakajima, Nobuo ; Kuramoto, Minoru ; Kinoshita, Koto ; Utano, Takanori

Author_Institution

NTT Radio Commun. Syst. Lab., Kanagawa, Japan

fYear

1990

fDate

6-9 May 1990

Firstpage

295

Lastpage

298

Abstract

The design parameters and experimental results for a proposed time-division multiple access (TDMA) digital mobile system are shown. The related network architecture, frame structure, and signaling structure for a digital system are given. The proposed system structure has three-slot TDMA, π/4 shifted QPSK (quadrature phase shift keying), and 25 kHz carrier spacing. A spectrum-efficient system can be realized by using radio transmission techniques, such as diversity, bidirectional feed control amplifier, and robust CODECs. Field experiments have verified the digital transmission performance of this system. A signaling structure featuring service flexibility, such as ISDN service, is presented

Keywords

codecs; digital radio systems; mobile radio systems; phase shift keying; signalling (telecommunication networks); time division multiple access; 25 kHz; QPSK; TDMA digital mobile system; VLF; codecs; frame structure; network architecture; signaling structure; system design; Codecs; Control systems; Digital systems; Feeds; ISDN; Land mobile radio; Quadrature phase shift keying; Radio control; Robust control; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1990 IEEE 40th

Conference_Location

Orlando, FL

ISSN

1090-3038

Type

conf

DOI

10.1109/VETEC.1990.110336

Filename

110336