IP Library Granted Patent US 10,425,109
Granted Patent B1
US 10,425,109 · App. 16/109,612 · Granted Sep 24, 2019

Method, apparatus, and system for deinterleaving data

Inventor: Pierre Humblet (Cambridge, MA)
Assignee: Acacia Communications, Inc.
H03M13/2785H03M13/276H04L1/0071H04L27/34
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Quick Facts
Patent No.
US 10,425,109
App. No.
16/109,612
Granted
Sep 24, 2019
Kind
B1
Abstract

A method, apparatus, and system for deinterleaving data.

Claims (799)

1. A method for deinterleaving data comprising:

writing data into a buffer having 172,032 metrics arranged into an 84 by 8 array of 16 by 16 blocks; wherein the buffer is partitioned into 4 subsets of rows according to a predetermined write sequence;

applying a mapping table to change data in each of the 16 by 16 block of arrays according to a table; wherein the table specifies a mapping of the location for each metric in the 16 by 16 block; and

reading the data out of the buffer to serve as input for a first decoder and a second decoder.

2. The method of claim 1 where the first elements of the 16 by 16 table entries form a Latin square.

3. The method of claim 1 wherein the method is for deinterleaving data encoded using a 16 QAM modulation.

4. The method of claim 3 wherein symbol bits in each reliability class are balanced in each constituent codeword.

5. The method of claim 4 wherein the indices of transmission of the metrics on the line, taken modulo N, where N is twice the number of metrics per symbol, are the same in each block.

6. The method of claim 1 wherein the table is:

0,0

1,1

2,2

3,3

4,4

5,5

6,6

7,7

8,8

9,9

10,10

11,11

12,12

13,13

14,14

15,15

14,15

15,0 

0,1

1,2

2,3

3,4

4,5

5,6

6,7

7,8

8,9

 9,10

10,11

11,12

12,13

13,14

12,14

13,15

14,0 

15,1 

0,2

1,3

2,4

3,5

4,6

5,7

6,8

7,9

 8,10

 9,11

10,12

11,13

10,13

11,14

12,15

13,0 

14,1 

15,2 

0,3

1,4

2,5

3,6

4,7

5,8

6,9

 7,10

 8,11

 9,12

 8,12

 9,13

10,14

11,15

12,0 

13,1 

14,2 

15,3 

0,4

1,5

2,6

3,7

4,8

5,9

 6,10

 7,11

 6,11

 7,12

 8,13

 9,14

10,15

11,0 

12,1 

13,2 

14,3 

15,4 

0,5

1,6

2,7

3,8

4,9

 5,10

 4,10

 5,11

 6,12

 7,13

 8,14

 9,15

10,0 

11,1 

12,2 

13,3 

14,4 

15,5 

0,6

1,7

2,8

3,9

2,9

 3,10

 4,11

 5,12

 6,13

 7,14

 8,15

9,0

10,1 

11,2 

12,3 

13,4 

14,5 

15,6 

0,7

1,8

15,7 

0,8

1,9

 2,10

 3,11

 4,12

 5,13

 6,14

 7,15

8,0

9,1

10,2 

11,3 

12,4 

13,5 

14,6 

13,6 

14,7 

15,8 

0,9

 1,10

 2,11

 3,12

 4,13

 5,14

 6,15

7,0

8,1

9,2

10,3 

11,4 

12,5 

11,5 

12,6 

13,7 

14,8 

15,9 

 0,10

 1,11

 2,12

 3,13

 4,14

 5,15

6,0

7,1

8,2

9,3

10,4 

9,4

10,5 

11,6 

12,7 

13,8 

14,9 

15,10

 0,11

 1,12

 2,13

 3,14

 4,15

5,0

6,1

7,2

8,3

7,3

8,4

9,5

10,6 

11,7 

12,8 

13,9 

14,10

15,11

 0,12

 1,13

 2,14

 3,15

4,0

5,1

6,2

5,2

6,3

7,4

8,5

9,6

10,7 

11,8 

12,9 

13,10

14,11

15,12

 0,13

 1,14

 2,15

3,0

4,1

3,1

4,2

5,3

6,4

7,5

8,6

9,7

10,8 

11,9 

12,10

13,11

14,12

15,13

 0,14

 1,15

2,0

1,0

2,1

3,2

4,3

5,4

6,5

7,6

8,7

9,8

10,9 

11,10

12,11

13,12

14,13

15,14

 0,15

7. The method of claim 1 wherein the method is for deinterleaving data encoded using QPSK modulation.

8. An apparatus comprising:

a deinterleaver; the deinterleaver containing logic enabling:

writing into a buffer having 172,032 metrics arranged into an 84 by 8 array of 16 by 16 blocks; wherein the buffer is partitioned into 4 subsets of rows; by writing data into the buffer in groups of 8 metrics; wherein each of the groups of 8 metrics are written in turn to each subset, in a column by column ordering; and

rearranging data in each 16 by 16 block of arrays according to a table; wherein the table specifies the rearranged location of each metric in the 16 by 16 block.

9. The apparatus of claim 8 where the first elements of the 16 by 16 table entries form a Latin square.

10. The apparatus of claim 8 wherein a data modulation format for the data is for a 16 QAM modulation.

11. The apparatus of claim 10 wherein symbol bits in each reliability class are balanced in each constituent codeword.

12. The apparatus of claim 11 wherein the indices of transmission of the metrics on the line, taken modulo N, where N is twice the number of metrics per symbol, are the same in each block.

13. The apparatus of claim 8 wherein the table is:

0,0

1,1

2,2

3,3

4,4

5,5

6,6

7,7

8,8

9,9

10,10

11,11

12,12

13,13

14,14

15,15

14,15

15,0 

0,1

1,2

2,3

3,4

4,5

5,6

6,7

7,8

8,9

 9,10

10,11

11,12

12,13

13,14

12,14

13,15

14,0 

15,1 

0,2

1,3

2,4

3,5

4,6

5,7

6,8

7,9

 8,10

 9,11

10,12

11,13

10,13

11,14

12,15

13,0 

14,1 

15,2 

0,3

1,4

2,5

3,6

4,7

5,8

6,9

 7,10

 8,11

 9,12

 8,12

 9,13

10,14

11,15

12,0 

13,1 

14,2 

15,3 

0,4

1,5

2,6

3,7

4,8

5,9

 6,10

 7,11

 6,11

 7,12

 8,13

 9,14

10,15

11,0 

12,1 

13,2 

14,3 

15,4 

0,5

1,6

2,7

3,8

4,9

 5,10

 4,10

 5,11

 6,12

 7,13

 8,14

 9,15

10,0 

11,1 

12,2 

13,3 

14,4 

15,5 

0,6

1,7

2,8

3,9

2,9

 3,10

 4,11

 5,12

 6,13

 7,14

 8,15

9,0

10,1 

11,2 

12,3 

13,4 

14,5 

15,6 

0,7

1,8

15,7 

0,8

1,9

 2,10

 3,11

 4,12

 5,13

 6,14

 7,15

8,0

9,1

10,2 

11,3 

12,4 

13,5 

14,6 

13,6 

14,7 

15,8 

0,9

 1,10

 2,11

 3,12

 4,13

 5,14

 6,15

7,0

8,1

9,2

10,3 

11,4 

12,5 

11,5 

12,6 

13,7 

14,8 

15,9 

 0,10

 1,11

 2,12

 3,13

 4,14

 5,15

6,0

7,1

8,2

9,3

10,4 

9,4

10,5 

11,6 

12,7 

13,8 

14,9 

15,10

 0,11

 1,12

 2,13

 3,14

 4,15

5,0

6,1

7,2

8,3

7,3

8,4

9,5

10,6 

11,7 

12,8 

13,9 

14,10

15,11

 0,12

 1,13

 2,14

 3,15

4,0

5,1

6,2

5,2

6,3

7,4

8,5

9,6

10,7 

11,8 

12,9 

13,10

14,11

15,12

 0,13

 1,14

 2,15

3,0

4,1

3,1

4,2

5,3

6,4

7,5

8,6

9,7

10,8 

11,9 

12,10

13,11

14,12

15,13

 0,14

 1,15

2,0

1,0

2,1

3,2

4,3

5,4

6,5

7,6

8,7

9,8

10,9 

11,10

12,11

13,12

14,13

15,14

 0,15

14. The apparatus of claim 8 wherein a data modulation format for the data is for a QPSK modulation.

15. A system comprising:

one or more decoders;

a deinterleaver; the deinterleaver containing logic enabling:

writing data into a buffer having 172,032 metrics arranged into an 84 by 8 array of 16 by 16 blocks; wherein the buffer is partitioned into 4 subsets of rows according to a predetermined write sequence;

applying a mapping table to change data in each of the 16 by 16 block of arrays according to a table; wherein the table specifies a mapping of the location for each metric in the 16 by 16 block; and

reading the data out of the buffer to serve as input for a first decoder and a second decoder.

16. The system of claim 15 wherein the one or more decoder read data from the buffer; wherein the one or more decoders switch between reading data from the buffer.

17. The system of claim 15 where the first elements of the 16 by 16 table entries form a Latin square.

18. The apparatus of claim 15 wherein a data modulation format for the data is for a 16 QAM modulation.

19. The apparatus of claim 15 wherein the table is:

0,0

1,1

2,2

3,3

4,4

5,5

6,6

7,7

8,8

9,9

10,10

11,11

12,12

13,13

14,14

15,15

14,15

15,0 

0,1

1,2

2,3

3,4

4,5

5,6

6,7

7,8

8,9

 9,10

10,11

11,12

12,13

13,14

12,14

13,15

14,0 

15,1 

0,2

1,3

2,4

3,5

4,6

5,7

6,8

7,9

 8,10

 9,11

10,12

11,13

10,13

11,14

12,15

13,0 

14,1 

15,2 

0,3

1,4

2,5

3,6

4,7

5,8

6,9

 7,10

 8,11

 9,12

 8,12

 9,13

10,14

11,15

12,0 

13,1 

14,2 

15,3 

0,4

1,5

2,6

3,7

4,8

5,9

 6,10

 7,11

 6,11

 7,12

 8,13

 9,14

10,15

11,0 

12,1 

13,2 

14,3 

15,4 

0,5

1,6

2,7

3,8

4,9

 5,10

 4,10

 5,11

 6,12

 7,13

 8,14

 9,15

10,0 

11,1 

12,2 

13,3 

14,4 

15,5 

0,6

1,7

2,8

3,9

2,9

 3,10

 4,11

 5,12

 6,13

 7,14

 8,15

9,0

10,1 

11,2 

12,3 

13,4 

14,5 

15,6 

0,7

1,8

15,7 

0,8

1,9

 2,10

 3,11

 4,12

 5,13

 6,14

 7,15

8,0

9,1

10,2 

11,3 

12,4 

13,5 

14,6 

13,6 

14,7 

15,8 

0,9

 1,10

 2,11

 3,12

 4,13

 5,14

 6,15

7,0

8,1

9,2

10,3 

11,4 

12,5 

11,5 

12,6 

13,7 

14,8 

15,9 

 0,10

 1,11

 2,12

 3,13

 4,14

 5,15

6,0

7,1

8,2

9,3

10,4 

9,4

10,5 

11,6 

12,7 

13,8 

14,9 

15,10

 0,11

 1,12

 2,13

 3,14

 4,15

5,0

6,1

7,2

8,3

7,3

8,4

9,5

10,6 

11,7 

12,8 

13,9 

14,10

15,11

 0,12

 1,13

 2,14

 3,15

4,0

5,1

6,2

5,2

6,3

7,4

8,5

9,6

10,7 

11,8 

12,9 

13,10

14,11

15,12

 0,13

 1,14

 2,15

3,0

4,1

3,1

4,2

5,3

6,4

7,5

8,6

9,7

10,8 

11,9 

12,10

13,11

14,12

15,13

 0,14

 1,15

2,0

1,0

2,1

3,2

4,3

5,4

6,5

7,6

8,7

9,8

10,9 

11,10

12,11

13,12

14,13

15,14

 0,15

20. The apparatus of claim 15 wherein a data modulation format for the data is for a QPSK modulation.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 19, 2024
From: ACACIA COMMUNICATIONS, INC.
To: ACACIA TECHNOLOGY, INC.
Reel/Frame 066832/0659 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 30, 2018
From: HUMBLET, PIERRE
To: ACACIA COMMUNICATIONS, INC.
Reel/Frame 046750/0726 →
Continuity (1)
Provisional Application 62717770 · Aug 10, 2018