Motorola A840 - Cell Phone - CDMA2000 1X Manuale Utente Scaricare il pdf

Analogue Cellular Technologies

AMPS Advanced Mobile Phone System. Developed by Bell Labs in the 1970s and

first used commercially in the United States in 1983. It operates in the 800

MHz band and is currently the world's largest cellular standard.

C-450 Installed in South Africa during the 1980's. Uses 450Mhz band. Much like

C-Netz. Now known as Motorphone and run by Vodacom SA.

C-Netz Older cellular technology found mainly in Germany and Austria. Uses 450

MHz.

Comvik Launched in Sweden in August 1981 by the Comvik network.

N-AMPS Narrowband Advanced Mobile Phone System. Developed by Motorola as an

interim technology between analogue and digital. It has some three times

greater capacity than AMPS and operates in the 800 MHz range.

NMT450 Nordic Mobile Telephones/450. Developed specially by Ericsson and Nokia

to service the rugged terrain that characterises the Nordic countries. Range

25km. Operates at 450 MHz. Uses FDD FDMA.

NMT900 Nordic Mobile Telephones/900. The 900 MHz upgrade to NMT 450

developed by the Nordic countries to accommodate higher capacities and

handheld portables. Range 25km. Uses FDD FDMA technology.

NMT-F French version of NMT900

NTT Nippon Telegraph and Telephone. The old Japanese analogue standard. A

high-capacity version is called HICAP.

RC2000 Radiocom 2000. French system launched November 1985

TACS Total Access Communications System. Developed by Motorola. and is

similar to AMPS. It was first used in the United Kingdom in 1985, although

in Japan it is called JTAC. It operates in the 900 MHz frequency range.

Digital Cellular Technologies

A1-Net Austrian Name for GSM 900 networks

B-CDMA Broadband CDMA. Now known as W-CDMA (see below). To be used

in UMTS.

Bluetooth The technology enables short-range communication networks

between consumer devices incorporating a Bluetooth interface, and

is set to greatly improve the way consumers access data and

services wirelessly.

Composite

CDMA/TDMA

Wireless technology that uses both CDMA and TDMA. For large-cell

licensed band and small-cell unlicensed band applications. Uses

CDMA between cells and TDMA within cells. Based on Omnipoint

technology.

CDMA Code Division Multiple Access. There are now a number of

variations of CDMA, in addition to the original Qualcomm-invented

N-CDMA (originally just 'CDMA', also known in the US as IS-95.

See

N-CDMA below). Latest variations are B-CDMA, W-CDMA and

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Sommario

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Analogue Cellular TechnologiesAMPS Advanced Mobile Phone System. Developed by Bell Labs in the 1970s and first used commercially in the United States

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composite CDMA/TDMA. Developed originally by Qualcomm, CDMA is characterized by high capacity and small cell radius, employing spread-spectrum technol

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started off as Ericsson's CT-3, but developed into ETSI's Digital European Cordless Standard. It is intended to be a far more flexible stand

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iMode Launched in February 1999, this fast-growing system from NTT DoCoMo uses compact HTML to provide WAP-like content to iMode phones. IMT DS Wideba

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Telecentre-H A proprietary WLL system by Krone. Range 30km, in the 350-500 MHz and 800-1000 Mhz range. Uses FDD FDM/FDMA and TDM/TDMA technologies. TE