01.05.2017 Views

563489578934

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

TABLE 8–10<br />

1G MAJOR ANALOG FDMA CELLULAR TELEPHONE SYSTEMS<br />

System Name a and Where Used<br />

AMPS<br />

North America<br />

Item<br />

A Service<br />

(Nonwire Line)<br />

B Service<br />

(Wire Line)<br />

ETACS<br />

United Kingdom<br />

JTACS<br />

Japan<br />

Year introduced 1983 1983 1985 1988<br />

Base cell station<br />

Transmit bands (MHz) 869–880, 890–891.5 880–890, 891.5–894 917–933, 935–960 860–870<br />

Mobile station<br />

Transmit bands (MHz) 824–835, 845–846.5 835–845, 846.5–849 872–888, 890–915 915–925<br />

Maximum power (watts) 3 3 3 2.8<br />

Cell size, radius (km) 2–20 2–20 2–20 2–20<br />

Number of duplex channels 416 b 416 b 1,000 400<br />

Channel bandwidth (kHz) 30 30 25 25<br />

Modulation<br />

Voice FM FM FM FM<br />

12-kHz peak deviation 12-kHz peak deviation 9.5-kHz peak deviation 9.5-kHz peak deviation<br />

Control signal FSK FSK FSK FSK<br />

(Voice and paging channels) 8-kHz peak deviation 8-kHz peak deviation 6.4-kHz peak deviation 6.4-kHz peak deviation<br />

10 kbits> s<br />

10 kbits> s<br />

8 kbits> s<br />

8 kbits><br />

s<br />

Manchester line code Manchester line code Manchester line code Manchester line code<br />

a AMPS, advanced mobile phone system; ETACS, extended total access communication system; JTACS, Japan total access communication system.<br />

b 21 of the 416 channels are used exclusively for paging (i.e., control channels).<br />

625

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!