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參數(shù)資料
| 型號(hào)： | 935264539557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | SOT-317, MQFP-100 |
| 文件頁(yè)數(shù)： | 4/19頁(yè) |
| 文件大?。?/td> | 162K |
| 代理商： | 935264539557 |
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1999 Jan 01
12
Philips Semiconductors
Product specication
Single Chip Satellite Channel Receiver
VES1993
TABLE 5. PUNCTURING AND MAPPING
Rate
R
Inhibition Flags
Mapping
000
inh[0] = 1
inh[1] = 1
I = X1
Q = Y1
2/3
001
inh[0] = 10 10
inh[1] = 11 11
I = X1Y2Y3
Q = Y1X3Y4
010
inh[0] = 101
inh[1] = 110
I = X1Y2
Q = Y1X3
4/5
011
inh[0] = 1000 1000
inh[1] = 1111 1111
I = X1Y2Y4Y5Y7
Q = Y1Y3X5Y6Y8
5/6
100
inh[0] = 10101
inh[1] = 11010
I = X1Y2Y4
Q = Y1X3X5
6/7
101
inh[0] = 100101 100101
inh[1] = 111010 111010
I = X1Y2X4X6Y7Y9Y11
Q = Y1Y3Y5X7Y8X10 X12
7/8
110
inh[0] = 1000101
inh[1] = 1111010
I = X1Y2X4Y6
Q = Y1Y3X5X7
8/9
111
inh[0] = 10001011 10001011
inh[1] = 11110100 11110100
I = X1Y2Y4Y6X8Y9Y11X13X15
Q = Y1Y3X5X7X9Y10Y12Y14X16
Notes :
1.Polynomial X is G1=171 inhibited with inh[0]
2.Polynomial Y is G2=133 inhibited with inh[1]
3.In DVB and RAUTO modes, the only Viterbi rates that the internal state machine will look for synchronization are :
1/2, 2/3, 3/4, 5/6 and 7/8.
4.In DSS and RAUTO modes, the only Viterbi rates that the internal state machine will look for synchronization are :
2/3 and 6/7.
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