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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