軟體定義無線電實現 sub-6 GHz 之量測與通訊應用

Abstract

本論文將使用軟體定義無線電(Software-Defined radio, SDR)裝置實現sub-6 GHz下的應用，選用的裝置是亞德諾半導體(Analog Devices)出產的ADALM-PLUTO作為應用開發與驗證的平台，並嘗試將它開發成頻譜分析儀(Spectrum Analyzer, SA)、向量網路分析儀(Vector Network Analyzer, VNA)、基於OFDM調變的點對點通訊裝置。 SA的部分將會參照既有的Keysight儀器，嘗試以SDR裝置還原基本功能，例如顯示訊號功率、加窗等。VNA的部分將會對於S_21及S_11的量測給出步驟與演算法，並且會與待測元件的s2p檔進行比較。點對點通訊的部份將會嘗試以兩台SDR裝置傳收OFDM訊號，並參照3GPP之中一些關於頻寬設定的標準去設計協定，最後分析傳輸表現。

This thesis utilizes Software-Defined Radio (SDR) devices to implement applications in the sub-6 GHz range. The selected device is the ADALM-PLUTO, produced by Analog Devices, which serves as the platform for application development and validation. The goal of this thesis is to develop the device into a Spectrum Analyzer (SA), a Vector Network Analyzer (VNA), and a point-to-point communication device based on OFDM modulation. For the SA topic, the implementation will reference existing Keysight instruments and attempt to replicate fundamental functions using the SDR device, such as signal power display and windowing. For the VNA topic, procedures and algorithms for measuring S_21 and S_11 will be provided, and the results will be compared with the s2p file of the device under test. For the point-to-point communication topic, two SDR devices will be used to transmit and receive OFDM signals. Protocol design will follow certain bandwidth configuration standards from 3GPP, and the transmission performance will be analyzed accordingly.