Lightweight Joint Coding-Modulation Optical Fiber Communication System for Point Cloud

IF 8.3 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Communications Pub Date : 2024-09-05 DOI:10.1109/TCOMM.2024.3455233

Wei Zhang;Zhenming Yu;Hongyu Huang;Xiangyong Dong;Kaixuan Sun;Kun Xu

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Abstract

Achieving efficient point cloud (PC) transmission is a fundamental requirement for immersive holographic-type communication. However, traditional optical fiber communication (TOFC), based on separated coding modulation for PC transmission, faces challenges related to massive data transmission and heavy computational resource requirements. To achieve lightweight and efficient PC transmission, we propose and experimentally demonstrate a joint coding-modulation optical fiber communication system for PC transmission (JCMPC). A joint encoding-modulation (JEM) network based on 3D convolution is designed to encode the PC into symbols for transmission directly. At the receiver, a joint decoding-demodulation (JDD) network is used to reconstruct the signals transmitted through the communication channel into the received PC. The experimental results indicate that the proposed JCMPC outperforms transmission schemes based on separate coding modulation and exhibits gradual performance degradation with the deterioration of channel conditions. We evaluate the decoding computational complexity of our proposed JCMPC scheme against the separate transmission schemes using Geometry-based Point Cloud Compression (G-PCC) and Low-Density Parity-Check (LDPC) codes. The results demonstrate that JCMPC reduces the decoding computational operations by over 80% compared to G-PCC+LDPC.

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用于点云的轻量级联合编码调制光纤通信系统

实现高效的点云（PC）传输是沉浸式全息通信的基本要求。然而，传统的光纤通信（TOFC）基于PC传输的分离编码调制，面临着大量数据传输和大量计算资源需求的挑战。为了实现轻量化和高效的PC传输，我们提出并实验验证了一种用于PC传输的联合编码-调制光纤通信系统（JCMPC）。设计了一种基于三维卷积的联合编码-调制（JEM）网络，将PC机编码为直接传输的符号。在接收端，采用联合解码-解调（JDD）网络对通过通信信道传输到接收端PC机的信号进行重构。实验结果表明，所提出的JCMPC传输方案优于基于分离编码调制的传输方案，并且随着信道条件的恶化，性能逐渐下降。我们使用基于几何的点云压缩（G-PCC）和低密度奇偶校验（LDPC）码对我们提出的JCMPC方案的解码计算复杂度进行了评估。结果表明，与G-PCC+LDPC相比，JCMPC可将译码计算量减少80%以上。

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来源期刊

IEEE Transactions on Communications 工程技术-电信学

CiteScore

16.10

自引率

8.40%

发文量

528

审稿时长

4.1 months

期刊介绍： The IEEE Transactions on Communications is dedicated to publishing high-quality manuscripts that showcase advancements in the state-of-the-art of telecommunications. Our scope encompasses all aspects of telecommunications, including telephone, telegraphy, facsimile, and television, facilitated by electromagnetic propagation methods such as radio, wire, aerial, underground, coaxial, and submarine cables, as well as waveguides, communication satellites, and lasers. We cover telecommunications in various settings, including marine, aeronautical, space, and fixed station services, addressing topics such as repeaters, radio relaying, signal storage, regeneration, error detection and correction, multiplexing, carrier techniques, communication switching systems, data communications, and communication theory. Join us in advancing the field of telecommunications through groundbreaking research and innovation.

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