Method and system for implementing visible-light communication, sending apparatus, and receiving apparatus
First Claim
Patent Images
1. A method for implementing visible light communication, comprising:
- after performing constellation modulation on data to be sent, a sending end mapping a modulated signal to a corresponding luminescent light source; and
transmitting the data to be sent to a receiving end through an optical signal, and the receiving end converting the received optical signal into an electrical signal; and
the receiving end determining a constellation modulation signal according to a luminescent light source corresponding to the received signal, and demodulating the constellation modulation signal to obtain received data;
wherein, before the method, the following is further comprised;
presetting a mapping relationship between the constellation modulation signal and a location where the luminescent light source is located;
wherein the luminescent light source is placed according to a constellation diagram form of the constellation modulation;
said mapping a modulated signal to a corresponding luminescent light source comprises;
mapping a signal of a constellation point on which the constellation modulation is performed to a luminescent light source corresponding to the constellation point according to the mapping relationship.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for implementing visible light communication, a sending apparatus and a receiving apparatus are disclosed. The method includes: after performing constellation modulation on data to be sent, a sending end mapping a modulated signal to a corresponding luminescent light source and transmitting the data to be sent through an optical signal; a receiving end converting a received optical signal into an electrical signal, and determining a constellation modulation signal according to a luminescent light source corresponding to the received signal, and demodulating the constellation modulation signal to obtain received data.
20 Citations
18 Claims
-
1. A method for implementing visible light communication, comprising:
- after performing constellation modulation on data to be sent, a sending end mapping a modulated signal to a corresponding luminescent light source; and
transmitting the data to be sent to a receiving end through an optical signal, and the receiving end converting the received optical signal into an electrical signal; and the receiving end determining a constellation modulation signal according to a luminescent light source corresponding to the received signal, and demodulating the constellation modulation signal to obtain received data; wherein, before the method, the following is further comprised;
presetting a mapping relationship between the constellation modulation signal and a location where the luminescent light source is located;
wherein the luminescent light source is placed according to a constellation diagram form of the constellation modulation;said mapping a modulated signal to a corresponding luminescent light source comprises;
mapping a signal of a constellation point on which the constellation modulation is performed to a luminescent light source corresponding to the constellation point according to the mapping relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- after performing constellation modulation on data to be sent, a sending end mapping a modulated signal to a corresponding luminescent light source; and
-
9. A system for implementing visible light communication, comprising:
- a sending end and a receiving end;
whereinthe sending end is configured to;
after performing constellation modulation on data to be sent, map a modulated signal to a corresponding luminescent light source; and
transmit the data to be sent to the receiving end through an optical signal; andthe receiving end is configured to;
receive the optical signal from the sending end and convert the optical signal into an electrical signal; and
determine a constellation modulation signal according to a luminescent light source corresponding to the received signal, and demodulate the constellation modulation signal to obtain received data;wherein, the sending end at least comprises;
a signal preprocessing unit, a mapping unit and a signal output unit,wherein, the signal preprocessing unit is configured to;
perform preprocessing on the data to be sent and then output the preprocessed data to be sent to the mapping unit, wherein the preprocessing comprises encoding and constellation modulation;the mapping unit is configured to;
be set with a mapping relationship between a constellation modulation signal and a location where the luminescent light source is located; and
according to the set mapping relationship, map the modulated signal to the corresponding luminescent light source and then output the modulated signal to the signal output unit wherein the luminescent light source is placed according to a constellation diagram form of the constellation modulation; andthe signal output unit is configured to;
convert an electrical signal from the mapping unit into an optical signal, and transmit the optical signal obtained through the conversion to the receiving end. - View Dependent Claims (10, 11, 12, 13, 14)
- a sending end and a receiving end;
-
15. A sending apparatus, configured to:
- after performing constellation modulation on data to be sent, map a modulated signal to a corresponding luminescent light source; and
send the data to be sent through an optical signal;wherein, the sending apparatus at least comprises;
a signal preprocessing unit, a mapping unit and a signal output unit, wherein,the signal preprocessing unit is configured to;
perform preprocessing on the data to be sent and then output the preprocessed data to be sent to the mapping unit, wherein the preprocessing comprises encoding and constellation modulation;the mapping unit is configured to;
be set with a mapping relationship between a constellation modulation signal and a location where the luminescent light source is located; and
map the modulated signal to the corresponding luminescent light source according to the set mapping relationship, and then output the modulated signal to the signal output unit wherein the luminescent light source is placed according to a constellation diagram form of the constellation modulation; andthe signal output unit is configured to;
convert an electrical signal from the mapping unit into an optical signal, and transmit the optical signal obtained through the conversion to a receiving end. - View Dependent Claims (16)
- after performing constellation modulation on data to be sent, map a modulated signal to a corresponding luminescent light source; and
-
17. A receiving apparatus, configured to:
- convert a received optical signal into an electrical signal; and
determine a constellation modulation signal according to a luminescent light source corresponding to the received signal, and demodulate the constellation modulation signal to obtain received data;wherein the receiving apparatus at least comprises;
a signal receiving unit, an inverse mapping unit and a signal processing unit, wherein,the signal receiving unit is configured to;
convert an optical signal from a sending end into an electrical signal and then output the electrical signal to the inverse mapping unit;the inverse mapping unit is configured to;
according to an established mapping relationship between a constellation modulation signal and a location where the luminescent light source is located, map a location of the luminescent light source where the received optical signal is located to a constellation modulation signal corresponding to a constellation point, and output the obtained constellation modulation signal to the signal processing unit;
wherein the luminescent light source in a sending end is placed according to a constellation diagram form of a constellation modulation;the signal processing unit is configured to;
perform processing on the constellation modulation signal from the inverse mapping unit to obtain the data sent by the sending end;
wherein the processing comprises modulation and decoding;wherein the received optical signal is processed by the sending end, which comprises;
preprocessing the data to be sent and outputting the preprocessed data to be sent to a mapping unit of the sending end, and wherein the preprocessing comprises performing encoding and the constellation modulation. - View Dependent Claims (18)
- convert a received optical signal into an electrical signal; and
Specification