cdmaOne(IS-95) Forward Traffic Channel (Rate Set 2)

Information bits

(267 ,125,55,21

bits/frame)

frame=20 msec

Add Frame Quality

Indicator (12,10,8,

6 bits/frame)

Convolution Encoder

r=1/2, K=9

13.35 kbps

6.25 kbps

2.75 kbps

1.05 kbps

Add Encoder Tail

8 bits/frame

14.4 kbps

7.2 kbps

3.6 kbps

1.82 kbps

Rate Set 2

Symbol Repetition

(1,2,4,8)

Puncture 2 out of

every 6 inputs

Code symbol

28.8 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)

Add one

reserve bit

Puncturing Pattern

¡§110101¡¨

I(t)

Q(t)

QPSK

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