數位細胞式行動電話世界標準

STANDARD

Mobile Frequency

Range (MHz)

Multiple Access Method

Number of Channels

Channel Spacing

Modulation

Duplex Method

Bit rate

DIGITAL CELLULAR TELEPHONES

North American

Digital Cellular

IS-54

IS-95

North American

Digital Cellular

Global System for Mobile Communications

GSM

RX:869-894

TX:824-849

RX:869-894

TX:824-849

TDMA/FDM

FDD

832

(3 users/channel)

30 kHz

p/4 DQPSK

48.6 kbps

CDMA/FDM

FDD

20

(798 users/channel)

BPSK/OQPSK

1.2288 Mbps

1250 kHz

TDMA/FDM

FDD

GMSK

(BT=0.3 Gaussian Filter)

270.833 kbps

Personal Digital

Cellular

PDC

RX:810-826

TX:940-956

RX:1429-1453

TX:1477-1501

TDMA/FDM

FDD

42 kbps

RX:935-960

TX:890-915

124

(8 users/channel)

200 kHz

1600

(3 users/channel)

25 kHz

p/4 DQPSK

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