VP310 查看數據表（PDF） - Mitel Networks

零件编号

产品描述 (功能)

生产厂家

VP310

Satellite Channel Decoder

Mitel Networks 

VP310

PRELIMINARY DATA

0

one

byte per

1

position

2

3

4

5

6

7

8

9

10

11

Sync word route

0

17x11 bytes

1

17x10 bytes

2

17x9 bytes

3

17x8 bytes

4

17x7 bytes

5

17x6 bytes

6

17x5 bytes

7

17x4 bytes

8

17x3 bytes

9

17x2 bytes

10

17x1

11

Figure 5. DVB Conceptual diagram of the convolutional de-interleaver block.

1.4.3.2 DSS

Before transmission, the data bytes are interleaved with each other in a cyclic pattern of thirteen.

This ensures the bytes are spaced out to avoid the possibility of a noise spike corrupting a group

of consecutive message bytes. The diagram below shows conceptually how the convolutional de-

interleaving system works. On the VP310, this function is realised in the same Random Access

Memory (RAM) as used for DVB, but utilising different addressing algorithm.

Output

Input

12D

145

0

21

12D

12D

Figure 6. DSS Conceptual diagram of the convolutional de-interleaver block.

9

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