Gprs Edge

http://www.vocal.com

GPRS - EDGE ENCODER

DECODER RF ADC

FILTER

GPRS Modem

ECP

GPRS Channel Decoder

AGC AFC

RF ADC

FILTER

EGPRS Modem

ECP

EGPRS Channel Decoder

Viterbi Decoder

GPRS Channel Encoder

Voice Decoder

Vocoder

Viterbi Decoder

EGPRS Channel Encoder

GPRS Burst Builder

GMSK Modulator

FILTER

RF DAC

EGPRS Burst Builder

8 PSK Modulator

FILTER

RF DAC

Data rates for GPRS - EDGE in kbps

1 Timeslot 8 Timeslot Code Rate Modulation

MSC 1 8.8 70.4 0.53 GMSK

MSC 2 11.2 89.6 0.66 GMSK

MSC 3 14.8 118.4 0.8 GMSK

MSC 4 17.6 140.8 1 GMSK

MSC 5 22.4 179.2 0.37 8 PSK

MSC 6 29.6 236.8 0.49 8 PSK

MSC 7 44.8 358.4 0.76 8 PSK

MSC 8 54.4 435.2 0.92 8 PSK

MSC 9 59.2 473.6 1 8 PSK

8 PSK Q

GMSK Q

(0,1,0) (0,1,1)

(0,0,0) (0,0,1)

Provides:

(1,1,1)

I

Ÿ Ÿ Ÿ

Layer 1 Radio Layer 1 Vocoders Layers 2 and 3

1 0

I

(1,1,0)

(1,0,1) (1,0,0)

© 2001

Technologies, Ltd.