MPPM Spectrum Analysis Based on PPM

Shi, Yang; Liang, Bochun; Cao, Yuxuan; Zhang, Moxuan

doi:10.1109/iccrd54409.2022.9730597

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…The spectral efficiency of the L-PPM is as follows [20], there is only one optical pulse among the N times slots:…”

Section: Adaptive Modulationmentioning

confidence: 99%

Adaptive Modulation Scheme for Soft-Switching Hybrid FSO/RF Links Based on Machine Learning

Shao,

Liu,

et al. 2024

Photonics

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A hybrid free-space optical (FSO) and radio frequency (RF) communication system has been considered an effective way to obtain a good trade-off between spectrum utilization efficiency and high-rate transmission. Utilizing artificial intelligence (AI) to deal with the switching and rate adaption problems between FSO/RF links, this paper investigated their modulation adapting mechanism based on a machine learning (ML) algorithm. Hybrid link budgets were estimated for different modulation types in various environments, particularly severe weather conditions. For the adaptive modulation (AM) scheme with different order PPM/PSK/QAM, a rate-compatible soft-switching model for hybrid FSO/RF links was established with a random forest algorithm based on ML. With a given target bit error rate, the model categorized a link budget threshold of the hybrid FSO/RF system over a training data set from local weather records. The switching and modulation adaption accuracy were tested over the testing weather data set especially focusing on rain and fog. Simulation results show that the proposed adaptive modulation scheme based on the random forest algorithm can have a good performance for soft-switching hybrid FSO/RF communication links.

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“…The spectral efficiency of the L-PPM is as follows [20], there is only one optical pulse among the N times slots:…”

Section: Adaptive Modulationmentioning

confidence: 99%

Adaptive Modulation Scheme for Soft-Switching Hybrid FSO/RF Links Based on Machine Learning

Shao,

Liu,

et al. 2024

Photonics

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“…Pulse-Position Modulation (PPM) is a type of signal modulation for optical communications systems that encodes message bits by broadcasting a single pulse in one of the required time shifts, whose transmitted rate is bits per second [1].…”

Section: Introductionmentioning

confidence: 99%

The Research Process, Application, and the Future Development of Pulse-Position Modulation

Tang

Wang

et al. 2022

J. Phys.: Conf. Ser.

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With the development of digital communication, pulse-position modulation technology has become an important technology in wireless communication due to its efficient bandwidth utilization and sensitive detection efficiency. This study aims to provide some basic information on PPM. In the trend of rapid development of PPM, researchers have found that PPM plays an irreplaceable role, no matter in daily life or scientific research and development. To arouse people’s interest in PPM research, more people are attracted to participate in the study. It began with an introduction to the development process of PPM, and briefly lists the advantages and disadvantages of PPM and the development trend to help readers quickly understand its background knowledge of it. The second part started to work on different modulations based on the previous research on PPM. Various modulation methods are related to each other, and the proposal of each modulation method is based on the shortcomings of existing modulation methods. This study discusses how PPM is used in experiments. Moreover, each experiment’s measurement values and corresponding advantages are analyzed through charts, like Bit Error Rate (BER) and Signal to Noise Ratio (SNR) conducted in each experiment. This study draws a conclusion by discussing the application and the broad horizon for future developments mainly used in communication engineering led by light communication. However, in recent years, PPM has been introduced in many other fields, such as detection and mechanic.

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Performance Analysis of Novel Differential Pulse Position Modulation in Wireless Optical Communications

Xiao,

Li,

Zhong

et al. 2023

2023 3rd International Conference on Electronic Information Engineering and Computer Science (EIECS)

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MPPM Spectrum Analysis Based on PPM

Cited by 3 publications

References 5 publications

Adaptive Modulation Scheme for Soft-Switching Hybrid FSO/RF Links Based on Machine Learning

Adaptive Modulation Scheme for Soft-Switching Hybrid FSO/RF Links Based on Machine Learning

The Research Process, Application, and the Future Development of Pulse-Position Modulation

Performance Analysis of Novel Differential Pulse Position Modulation in Wireless Optical Communications

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