Modulation, Demodulation, and Coding

Ke, Xizheng; Dong, Ke

doi:10.1007/978-981-19-0382-3_3

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…However, there is a problem that with the existing technology it is not possible to generate a huge number of keys on the one hand, and on the other hand the distribution of a huge number of keys is not yet possible. Due to the characteristics of chaotic signals such as noise-like, broad spectrum and unpredictability, they can be widely used in confidential communication, LIDAR, fiber optic detection, weak signal detection, distributed fiber optic sensing and high-speed random number generation [2]. For chaotic secure communication, the time delay signal caused by optical feedback gives possible clues to illegal attackers, and the value also proves that chaotic communication with feedback time delay information is insecure.…”

Section: Introductionmentioning

confidence: 99%

Spatial enhancement of chaotic optical communication keys based on multi-zone semiconductor lasers

Líu¹,

Yang²,

Sun³

2023

International Conference on Intelligent Systems, Communications, and Computer Networks (ISCCN 2023)

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Chaotic signals can be applied to confidential communications because of their noise-like, broad-spectrum and unpredictable properties. However, using the internal parameters of the laser as the key for communication is not only not easy to change, but also the key parameter space is limited. Therefore, increasing the key space is crucial for the security of chaotic confidential communication systems. In this paper, we propose to increase the key space of chaotic optical communication system by using multi-section semiconductor laser (MSSL), which increases the number of key parameters and increases the key space of the system. Finally, the validity of the ideas proposed in this paper is verified through experiments.

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Section: Introductionmentioning

confidence: 99%

Spatial enhancement of chaotic optical communication keys based on multi-zone semiconductor lasers

Líu¹,

Yang²,

Sun³

2023

International Conference on Intelligent Systems, Communications, and Computer Networks (ISCCN 2023)

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“…As PPM modulation techniques have matured, PPM has been used to improve communication performance by combining it with other coding methods, such as LDPC codes [14]. In addition, PPM has evolved from its initial application in single-input single-output (SISO) communication systems to its current application in multiple-input multiple-output (MIMO) communication systems [15].…”

Section: Introductionmentioning

confidence: 99%

FPGA-based PPM Modulation System Design

Yang¹

2023

HSET

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As a widely used modulation technique in the field of communication, PPM modulation techniques have the advantages of high interference immunity, simple coding and high-power utilization, and are often applied in practical scenarios. PPM modulation techniques can be divided into three categories. single pulse position modulation, differential pulse position modulation and multi pulse position modulation. In different application scenarios, different kinds of pulse position modulation methods should be selected for modulation. In this paper, the frame structures of these three types of pulse position modulation are discussed using the Verilog language based on FPGA, the corresponding mapping relationships for each type of pulse position modulation are given, and the design and performance of these three types of pulse position modulation demodulation systems are compared.

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Modulation, Demodulation, and Coding

Cited by 2 publications

References 11 publications

Spatial enhancement of chaotic optical communication keys based on multi-zone semiconductor lasers

Spatial enhancement of chaotic optical communication keys based on multi-zone semiconductor lasers

FPGA-based PPM Modulation System Design

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