SECURE CODING AND MODULATION FOR OPTICAL TRANSPORT

• US 20180007045A1
• Filed: 06/30/2016
• Published: 01/04/2018
• Est. Priority Date: 06/30/2016
• Status: Abandoned Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Hamid Mehrvar, Mehdi Arashmid Akhavain Mohammadi, Mohammad Mehdi Mansouri Rad
• Inventors: AKHAVAIN MOHAMMADI, Mehdi Arashmid, MANSOURI RAD, Mohammad Mehdi, MEHRVAR, Hamid
• Application Number:
  US15/198,441
• Publication Number:
  US 20180007045A1
• Time in Patent Office: Days
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04B 10/516 Details of coding or modulation
• CPC Class Codes: H04B 10/66 Non-coherent receivers, e.g. using direct detection
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 63/068 using time-dependent keys, e.g. periodically changing keys cryptographic mechanisms or cryptographic arrangements for controlling usage of secret information H04L9/088
• CPC Class Codes: H04L 63/0876 based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint

Abstract

Transmitter, receiver, system and method for secure data communications are provided. The transmitter encodes data as a spatial symbol in accordance with a codebook to transmit spatially encoded data through the optical channel. The receiver detects a spatial symbol from spatially encoded data received through the optical channel, and generates a data value based on a codebook and the spatial symbol.

Claims

1. A transmitter for secure data transmission over an optical channel, comprising:

a mask for transmitting a spatial symbol into the optical channel; and

a controller configured to;

encode incoming data as a spatial symbol in accordance with a first codebook, and

control the mask based on the spatial symbol to transmit the spatial symbol through the optical channel.

2. The transmitter of claim 1 wherein the mask is disposed between a light source and the optical channel.

3. The transmitter of claim 1, wherein the controller comprises a region controller configured to control each of a plurality of regions of the mask based on the symbol.

4. The transmitter of claim 2, wherein each region in the plurality is operable as one of a polarizer, an attenuator, a phase shifter, a dispersive element and combinations thereof.

5. The transmitter of claim 1, wherein the transmitter is configured to change the codebook.

6. The transmitter of claim 5 wherein the transmitter is configured to change the codebook in response to one of:

a message received from a controller;

a message received from a receiver of the spatial symbol;

a timer internal to the transmitter; and

detection of an event.

8. The transmitter of claim 5 wherein the transmitter is configured to:

generate a second codebook different from the first codebook; and

use the second codebook in a subsequent encoding.

9. The transmitter of claim 5 wherein the transmitter is configured to receive a new codebook from a controller or a receiver.

10. The transmitter of claim 1, wherein the controller comprises a spatial encoder configured to map the incoming data to the spatial symbol in accordance with the codebook.

7. The method of 6 wherein the transmitter is further configured to notify at least one of the receiver and the controller of a change of the codebook.

11. A method for secure data transmission over an optical channel, comprising:

encoding incoming data as a spatial symbol in accordance with a codebook; and

transmitting the spatial symbol through the optical channel.

12. The method of claim 11, comprising:

controlling the configuration of a mask to transmit light into the optical channel in accordance with a shape of the spatial symbol.

13. The method of claim 12, wherein transmitting includes transmitting a light through the mask.

14. The method of claim 12, wherein controlling the mask comprises controlling each of a plurality of regions of the mask based on the symbol.

15. The method of claim 11, comprising changing the codebook after transmitting the spatial symbol.

16. The method of claim 15, comprising instructing a receiver to change a codebook for data decoding in the receiver.

17. A receiver for secure data communication over an optical channel, comprising:

a mask for generating a signal based on detection of a spatially encoded symbol received over the optical channel; and

a controller configured to;

identify the received symbol in accordance with the generated signal;

decode the spatial symbol into a data value in accordance with a codebook.

18. The receiver of claim 17, wherein the controller is further configured to identify the received symbol in accordance with the generated signal and the codebook.

19. The receiver of claim 17, wherein the receiver is configured to change the codebook.

20. The receiver of claim 19 wherein the receiver is configured to change the codebook in response to one of:

a message received from a controller;

a message received from a transmitter of the detected spatially encoded symbol;

a timer internal to the receiver; and

detection of an event.

21. The receiver of claim 19, wherein the receiver is configured to instruct a transmitter communicatively coupled to the receiver to change a codebook for data encoding in the transmitter.

22. A method for decoding spatially encoded data received over an optical channel, comprising:

generating a signal based on spatially encoded data received over the optical channel;

identifying a spatial symbol from the signal; and

decoding the spatial symbol into a data value in accordance with a codebook.

23. The method of claim 22 wherein identifying the spatial symbol includes identifying the spatial symbol in accordance with the codebook.

24. The method of claim 22, comprising changing the codebook after decoding the spatial symbol.

25. The method of claim 22, comprising instructing a transmitter to change a codebook for data encoding in the transmitter.