CN-122027081-A - Data transmission method and device applied to Link-16 data Link

Abstract

The invention discloses a data transmission method and a data transmission device applied to a Link-16 data Link, wherein the method comprises the steps of performing Turbo code encoding on target data to obtain target encoding, performing unitary space-time modulation on the target encoding based on a chaotic mapping mode to obtain unitary space-time modulation signals, packaging a plurality of the unitary space-time modulation signals in one time slot according to a target time slot structure, and transmitting the time slot once in a space-time mode or a time-frequency mode. The invention discloses a data transmission method and a device applied to a Link-16 data chain, which can realize a low interception, fading resistance and frequency domain interference resistance data transmission scheme of the Link-16 data chain based on the USTM on the premise of keeping a basic time slot structure by replacing an RS code and a CCSK soft spread spectrum with a low code rate Turbo code and replacing CSK modulation with the USTM, reduce interception rate, improve fading resistance and improve frequency domain interference resistance.

Inventors

• ZHANG DAPENG
• LI ZEQING
• WANG GUOPING
• WANG LINGLI
• WANG YING
• BIAN LIJUN
• LIU NING
• MA FUYUN

Assignees

• 北京通广龙电子科技有限公司

Dates

Publication Date

20260512

Application Date

20251231

Claims (10)

1. 1. A data transmission method applied to a Link-16 data Link, comprising: Performing Turbo code coding on target data to obtain target codes; based on a chaotic mapping mode, performing unitary space-time modulation on the target code to acquire a unitary space-time modulation signal; According to the target time slot structure, packaging a plurality of unitary space-time modulation signals in one time slot; the time slots are transmitted once in a space-time or time-frequency manner.
2. 2. The data transmission method applied to Link-16 data Link according to claim 1, wherein the performing unitary space-time modulation on the target code based on the chaotic mapping manner, obtaining a unitary space-time modulation signal, comprises: Searching a unitary space-time modulation signal constellation set based on a chaotic mapping mode, and determining a unitary matrix corresponding to the target code in the unitary space-time modulation signal constellation set; and acquiring the unitary space-time modulation signal based on the unitary matrix and the channel coherence time.
3. 3. The data transmission method applied to Link-16 data Link according to claim 2, the chaotic mapping method is characterized by comprising a logic-based mapping.
4. 4. The data transmission method applied to Link-16 data chains according to claim 1, wherein said target slot structure comprises 6 message words, and 32 symbol periods in each hop in said message words are used for transmitting 4 said unitary space-time modulation signals, each of said unitary space-time modulation signals occupies 8 symbol periods.
5. 5. The data transmission method applied to Link-16 data chains according to claim 1, wherein said target slot structure comprises 12 message words, and 32 symbol periods in each hop in said message words are used for transmitting 4 said unitary space-time modulation signals, each of said unitary space-time modulation signals occupies 8 symbol periods.
6. 6. The data transmission method applied to the Link-16 data Link according to any one of claims 1 to 5, wherein the performing Turbo code encoding on the target data to obtain the target code includes: and performing Turbo code encoding on the target data with a target code rate to obtain the target code, wherein the target code rate is less than one third or one fifth.
7. 7. A data transmission apparatus for a Link-16 data Link, comprising: the coding module is used for performing Turbo code coding on target data to obtain target codes; the modulation module is used for carrying out unitary space-time modulation on the target code based on a chaotic mapping mode to acquire a unitary space-time modulation signal; The packaging module is used for packaging a plurality of unitary space-time modulation signals in one time slot according to a target time slot structure; And the transmitting module is used for transmitting the time slot once in a space-time mode or a time-frequency mode.
8. 8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps of the data transmission method applied to a Link-16 data chain as claimed in any one of claims 1 to 6 when the program is executed.
9. 9. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the data transmission method applied to Link-16 data links as claimed in any of claims 1 to 6.
10. 10. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the data transmission method according to any one of claims 1 to 6 applied to Link-16 data links.

Description

Data transmission method and device applied to Link-16 data Link Technical Field The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus applied to Link-16 data Link. Background Link-16 data chain is a very widely used data chain. In the aspect of channel coding, a Link-16 data chain adopts 32-order (31, 15) Reed-Solomon (RS) codes, and has stronger anti-interference capability. In the aspect of modulation, the Link-16 data chain adopts a non-coherent Minimum frequency shift keying (Minimum SHIFT KEYING, MSK) cascade Cyclic Code shift keying (Cyclic Code SHIFT KEYING, CCSK) soft spread spectrum system, and has higher spread spectrum gain. But the Link-16 data Link has poor multipath resistance and has defects in interception, anti-fading, anti-frequency domain interference and the like. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to provide a data transmission method and a data transmission device applied to a Link-16 data Link, which can realize low interception, fading resistance and frequency domain interference resistance in the data transmission based on the Link-16 data Link. In order to achieve the above object, the present invention provides a data transmission method applied to a Link-16 data Link, comprising: Performing Turbo code coding on target data to obtain target codes; based on a chaotic mapping mode, performing unitary space-time modulation on the target code to acquire a unitary space-time modulation signal; According to the target time slot structure, packaging a plurality of unitary space-time modulation signals in one time slot; the time slots are transmitted once in a space-time or time-frequency manner. In an embodiment of the present invention, the performing unitary space-time modulation on the target code based on the chaotic mapping manner, to obtain a unitary space-time modulation signal, includes: Searching a unitary space-time modulation signal constellation set based on a chaotic mapping mode, and determining a unitary matrix corresponding to the target code in the unitary space-time modulation signal constellation set; and acquiring the unitary space-time modulation signal based on the unitary matrix and the channel coherence time. In an embodiment of the invention, the chaotic mapping method includes a logistic mapping. In an embodiment of the present invention, the target slot structure includes 6 message words, and 32 symbol periods in each hop in the message words are used to transmit 4 unitary space-time modulation signals, and each unitary space-time modulation signal occupies 8 symbol periods. In an embodiment of the present invention, the target slot structure includes 12 message words, and 32 symbol periods in each hop in the message words are used to transmit 4 unitary space-time modulation signals, and each unitary space-time modulation signal occupies 8 symbol periods. In an embodiment of the present invention, the performing Turbo code encoding on the target data to obtain a target code includes: and performing Turbo code encoding on the target data with a target code rate to obtain the target code, wherein the target code rate is less than one third or one fifth. In one embodiment of the present invention, a data transmission device applied to a Link-16 data Link includes: the coding module is used for performing Turbo code coding on target data to obtain target codes; the modulation module is used for carrying out unitary space-time modulation on the target code based on a chaotic mapping mode to acquire a unitary space-time modulation signal; The packaging module is used for packaging a plurality of unitary space-time modulation signals in one time slot according to a target time slot structure; And the transmitting module is used for transmitting the time slot once in a space-time mode or a time-frequency mode. In one embodiment of the present invention, an electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the data transmission method or the demodulation method applied to the Link-16 data Link as described in any one of the above when the program is executed. In one embodiment of the present invention, a non-transitory computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of a data transmission method or demodulation method as described in any one of the above for a Link-16 data chain. In one embodiment of the present invention, a computer program product comprises a computer p