參數(shù)資料
型號： VES1993
廠商： NXP SEMICONDUCTORS
元件分類： 消費家電
英文描述： Single Chip Satellite Channel Receiver(單片衛(wèi)星頻道接收器)
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： MQFP-100
文件頁數(shù)： 12/16頁
文件大?。?/td> 90K
代理商： VES1993
1999 Jan 01
12
Philips Semiconductors
Product specification
Single Chip Satellite Channel Receiver
VES1993
TABLE 5. PUNCTURING AND MAPPING
Rate
R
Inhibition Flags
Mapping
000
inh[0] = 1
inh[1] = 1
inh[0] = 10 10
inh[1] = 11 11
inh[0] = 101
inh[1] = 110
inh[0] = 1000 1000
inh[1] = 1111 1111
inh[0] = 10101
inh[1] = 11010
inh[0] = 100101 100101
inh[1] = 111010 111010
inh[0] = 1000101
inh[1] = 1111010
inh[0] = 10001011 10001011
inh[1] = 11110100 11110100
I = X1
Q = Y1
I = X1Y2Y3
Q = Y1X3Y4
I = X1Y2
Q = Y1X3
I = X1Y2Y4Y5Y7
Q = Y1Y3X5Y6Y8
I = X1Y2Y4
Q = Y1X3X5
I = X1Y2X4X6Y7Y9Y11
Q = Y1Y3Y5X7Y8X10 X12
I = X1Y2X4Y6
Q = Y1Y3X5X7
I = X1Y2Y4Y6X8Y9Y11X13X15
Q = Y1Y3X5X7X9Y10Y12Y14X16
2/3
001
010
4/5
011
5/6
100
6/7
101
7/8
110
8/9
111
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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