IP Library › Granted Patent US 10,659,275

Granted Patent B2

US 10,659,275 · App. 16/020,554 · Granted May 19, 2020

Coding and modulation apparatus using non-uniform constellation

Inventors: Lothar Stadelmeier (Stuttgart, DE); Jan Zoellner (Braunschweig, DE); Nabil Loghin (Freiburg, DE)

Assignee: Saturn Licensing LLC

H04L27/34 H03M13/25 H03M13/356 H04L1/007 H04L1/0041 H04L1/0071 H04L27/0008 H04L27/3405 H04L27/36 H04L27/38

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Quick Facts

Patent No.: US 10,659,275
App. No.: 16/020,554
Granted: May 19, 2020
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

A coding and modulation apparatus and method are presented. The apparatus ( 10 ) comprises an encoder ( 11 ) that encodes input data into cell words, and a modulator ( 12 ) that modulates said cell words into constellation values of a non-uniform constellation. The modulator ( 12 ) is configured to use, based on the total number M of constellation points of the constellation, the signal-to-noise ratio SNR in dB and the channel characteristics, a non-uniform constellation from a group of constellations comprising one or more of predetermined constellations defined by the constellation position vector u 1 . . . v, wherein v=sqrt(M)/2−1.

Claims (1682)

1. A coding and modulation apparatus, comprising:

circuitry configured to:

encode input data into 10-bit cell words;

modulate the cell words into constellation points of a non-uniform constellation (NUC); and

convert the constellation points into one or more data streams,

wherein

the NUC is a Quadrature Amplitude Modulation (QAM) constellation having 1024 constellation points,

a constellation point (z q ) of the constellation points that has an in-phase component Re(z q ) and a quadrature-phase component Im(z q ) is determined according to a cell word (y 0,q , . . . y 9,q ) of the cell words, a constellation position vector (u 0 , . . . u 15 ), and tables as follows:

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

and

the constellation position vector (u 0 , . . . u 15 ) prior to power normalization is (1, 1.0005, 2.0897, 2.0888, 3.9945, 3.9931, 5.3843, 5.3894, 7.5206, 7.6013, 9.3371, 9.8429, 11.9255, 13.3962, 15.8981, 19.1591).

2. The apparatus according to claim 1 , wherein the constellation position vector (u 0 , . . . u 15 ) after the power normalization is (0.0773, 0.0773, 0.1614, 0.1614, 0.3086, 0.3085, 0.4159, 0.4163, 0.5810, 0.5872, 0.7213, 0.7604, 0.9212, 1.0349, 1.2281, 1.4800).

3. A transmission apparatus, comprising:

the coding and modulation apparatus as recited in claim 1 ; and

a transmitter configured to transmit the one or more data streams.

4. A coding and modulation method, comprising:

encoding input data into 10-bit cell words;

modulating, by circuitry, the cell words into constellation points of a non-uniform constellation (NUC); and

converting said constellation points into one or more data streams,

wherein

the NUC is a Quadrature Amplitude Modulation (QAM) constellation having 1024 constellation points,

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z, q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(zq)

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

and

5. The method according to claim 4 , wherein the constellation position vector (u 0 , . . . u 15 ) after the power normalization is (0.0773, 0.0773, 0.1614, 0.1614, 0.3086, 0.3085, 0.4159, 0.4163, 0.5810, 0.5872, 0.7213, 0.7604, 0.9212, 1.0349, 1.2281, 1.4800).

6. A decoder and demodulation apparatus, comprising:

circuitry configured to:

convert one or more data streams into constellation points of a non-uniform constellation (NUC);

demodulate the constellation points into 10-bit cell words; and

decode the cell words into input data,

wherein

the NUC is a Quadrature Amplitude Modulation (QAM) constellation having 1024 constellation points,

a cell word (y 0,q , . . . y 9,q ) of the cell words is determined according to a constellation point (z q ) of the constellation points that has an in-phase component Re(z q ) and a quadrature-phase component Im(z q ), a constellation position vector (u 0 , . . . u 15 ), and tables as follows:

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

and

the constellation position vector (u 0 , . . . , u 15 ) prior to power normalization is (1, 1.0005, 2.0897, 2.0888, 3.9945, 3.9931, 5.3843, 5.3894, 7.5206, 7.6013, 9.3371, 9.8429, 11.9255, 13.3962, 15.8981, 19.1591).

7. The apparatus according to claim 6 , wherein the constellation position vector (u 0 , . . . u 15 ) after the power normalization is (0.0773, 0.0773, 0.1614, 0.1614, 0.3086, 0.3085, 0.4159, 0.4163, 0.5810, 0.5872, 0.7213, 0.7604, 0.9212, 1.0349, 1.2281, 1.4800).

8. A receiver apparatus, comprising:

the decoder and demodulation apparatus according to claim 6 ; and

a receiver configured to receive the one or more data streams.

9. The receiver apparatus according to claim 8 , wherein the receiver is configured to receive the one or more data streams for terrestrial delivery having fading channels.

10. A receiving method, comprising:

converting one or more data streams into constellation points of a non-uniform constellation (NUC);

demodulating, by circuitry, the constellation points into 10-bit cell words; and

decoding the cell words into input data,

wherein

the NUC is a Quadrature Amplitude Modulation (QAM) constellation having 1024 constellation points,

a cell word (v 0,q , . . . y 9,q ) of the cell words is determined according to a constellation point (z q ) of the constellation points that has an in-phase component Re(z q ) and a quadrature-phase component Im(z q ), a constellation position vector (u 0 , . . . u 15 ), and tables as follows:

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 0,q

y 2,q

y 4,q

y 6,q

y 8,q

Re(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

−u 15

−u 14

−u 13

−u 12

−u 11

−u 10

−u 9

−u 8

−u 7

−u 6

−u 5

−u 4

−u 3

−u 2

−u 1

−u 0

y 1,q

y 3,q

y 5,q

y 7,q

y 9,q

Im(z q )

u 0

u 1

u 2

u 3

u 4

u 5

u 6

u 7

u 8

u 9

u 10

u 11

u 12

u 13

u 14

u 15

and

11. The method according to claim 10 , wherein the constellation position vector (u 0 , . . . u 15 ) after the power normalization is (0.0773, 0.0773, 0.1614, 0.1614, 0.3086, 0.3085, 0.4159, 0.4163, 0.5810, 0.5872, 0.7213, 0.7604, 0.9212, 1.0349, 1.2281, 1.4800).

12. A non-transitory computer readable medium including computer program instructions which, when executed by a computer, causes the computer to perform the method of claim 10 .

Assignments (3)

CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE'S NAME PREVIOUSLY RECORDED ON REEL 051843 FRAME 0407. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Feb 24, 2020

From: SONY CORPORATION

To: SATURN LICENSING LLC

Reel/Frame 052003/0709 →

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 7, 2020

From: SONY CORPORATION

To: SATURN LICENSING

Reel/Frame 051843/0407 →

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 4, 2020

From: STADELMEIER, LOTHAR; ZOELLNER, JAN; LOGHIN, NABIL

To: SONY CORPORATION

Reel/Frame 051714/0867 →