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研究生: 邱瀚輝
Chiu, Han-Hui
論文名稱: 神經網路為基礎之無線通訊系統設計
Communication Systems based on Neural Networks
指導教授: 黃政吉
Huang, Jeng-Ji
口試委員: 馮輝文
Ferng, Huei-Wen
熊大為
Shiung, David
黃政吉
Huang, Jeng-Ji
口試日期: 2023/06/13
學位類別: 碩士
Master
系所名稱: 電機工程學系
Department of Electrical Engineering
論文出版年: 2023
畢業學年度: 111
語文別: 英文
論文頁數: 51
中文關鍵詞: 訊號處理通道編碼訊號調變神經網路
英文關鍵詞: Signal Processing, Channel Encoding, Modulation, Neural Network
研究方法: 實驗設計法
DOI URL: http://doi.org/10.6345/NTNU202301069
論文種類: 學術論文
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  • 在數據處理時代,機器學習一直是一個熱門話題。 從Google的AlphaGo,在幾年前擊敗了包括圍棋冠軍在內的眾多職業圍棋選手,到最近基於transformer的強大和知名的聊天機器人ChatGPT,都能看到機器學習的應用。這篇論文使用了捲積神經網路替代傳統通訊系統中的發射器與接收器,並使用加性高斯白雜訊作為通道。整個實驗過程使用MATLAB進行,如結果所示,基於機器學習的通訊系統能勝過使用傳統架構(捲積碼及正交振幅調變)的通訊系統。

    Artificial intelligence (AI) has been widely used in many applications such as image recognitions. In this thesis, a convolution neural network (CNN) is investigated, which is used to replace both a transmitter and a receiver in a conventional communication system where an additive white Gaussian noise (AWGN) channel is assumed. As a CNN possesses a shift invariant property, it can avoid the curse of dimensionality. On the other hand, as demonstrated by numerical results obtained from MATLAB, a CNN is able to outperform a conventional communication system, in which the channel coding, i.e., a convolutional code, and the modulation are used.

    Chapter 1 Introduction 1 1.1 Motivation 1 1.2 Related Works 3 1.3 Thesis Architecture 5 Chapter 2 Literature Review 6 2.1 Source Encoding 6 2.2 Channel Encoding 8 2.3 Digital Modulation 11 2.4 Channel 20 2.5 Decoding 22 2.6 Machine Learning 24 2.7 Autoencod-er 33 Chapter 3 Methodology 36 3.1 End-to-End communication system 36 3.2 Power Normalization 43 3.3 AWGN Layer 44 Chapter 4 Experimental Results 45 Chapter 5 Conclusion 48 References 49

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