Title :
Error-free Group 3 facsimile terminal for cellular mobile telephone circuit
Author :
Kawabe, Manabu ; Yoshida, Tatsumasa ; Sato, Takuro ; Etoh, Hiroshi ; Bessho, Masaharu
Author_Institution :
OKI Electric Industry Co. Ltd., Tokyo, Japan
Abstract :
A Group 3 error-free facsimile terminal developed for use in the cellular radio network is described. The terminal uses a CCITT V.27ter modem with eight-phase differential phase-shift keying (DPSK) modulation and an adaptive error control scheme developed for mobile telephone communication. An image data compression uses modified modified READ (MMR). The data transmission speed is 4800 b/s. The terminal can transmit a letter-size document (of the CCITT No. 1 chart) in 25 s
Keywords :
cellular radio; data compression; error correction codes; facsimile equipment; image coding; modems; protocols; 4800 bit/s; CCITT V.27ter modem; DPSK; Group 3 error-free facsimile terminal; MMR code; adaptive error control scheme; cellular mobile telephone circuit; cellular radio network; eight-phase differential phase-shift keying; error correction codes; image data compression; modified modified READ; protocols; Adaptive control; Differential phase shift keying; Differential quadrature phase shift keying; Error correction; Facsimile; Land mobile radio cellular systems; Modems; Phase modulation; Programmable control; Telephony;
Conference_Titel :
Vehicular Technology Conference, 1992, IEEE 42nd
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-0673-2
DOI :
10.1109/VETEC.1992.245389
