cdmaOne(IS-95) Forward Traffic Channel (Rate Set 1)

Information bits

(172 ,80,40,16

bits/frame)

frame=20 msec

Add Frame Quality

Indicator (12,8,0,

0 bits/frame)

Convolution Encoder

r=1/2, K=9

8.6 kbps

4.0 kbps

2.0 kbps

0.8 kbps

9.2 kbps

4.4 kbps

2.0 kbps

0.8 kbps

Add Encoder Tail

8 bits/frame

9.6 kbps

4.8 kbps

2.4 kbps

1.2 kbps

Rate Set 1

Symbol Repetition

(1,2,4,8)

Block Interleaver

Code symbol

19.2 kbps

19.2 kbps

Long PN

Code Gen.

Public Long Code

Mask for User m

(ESN number)

Power Control

bits (800 bps)

„v

Decimator

19.2 kbps

Decimator

800 Hz

MUX

„v

Walsh Code

1.2288 Mcps

1.2288 Mcps

NOTE : Private Long

Code Mask

B.P.F.

„v

I-channel

Sequence

B.P.F.

„v

Q-channel

Sequence

32768 chips

(26.667 msec)

32768/64=512 offset

„u

Cos Wct

„u

Sins Wct

„v

s(t)

QPSK

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