在EPC第一類第二代RFID系統中，被動式標籤訊號能量是由讀取器提供，且相當微弱。因此如何將標籤微弱訊號正確地解碼對於讀取器設計是重要課題之一。
在本論文中，我們使用美商國家儀器公司(National Instrument, NI)所開發之軟體定義無線電平台－向量收發器(Vector Signal Transceiver, VST)，實現符合EPC global Class-1 Generation-2 (C1G2) 規範之RFID讀取器。該讀取器可成功地讀取以米勒子載波編碼商用標籤之反向散射訊號之標籤識別碼。
本論文使用軟體模擬及VST實現方式，對米勒子載波編碼之標籤反向散訊號，進行逐符元(Symbol by symbol)解碼及Viterbi演算法序列解碼等兩種解碼方法比較。並於微波無反射實驗室及一般環境之會議室中進行實驗量測，以對兩種方式之位元錯誤率及讀取正確率進行分析比較。實驗結果顯示，本論文實現之讀取器與Impinj商用讀取器之讀取正確率相近。

In an EPC Class1 Generation2 (C1G2) RFID system, the power of backscatter signal from a passive tag is provided by a reader, and is fairly weak in general. How to decode the weak tag backscatter signal correctly is an important issue in reader design.
In this thesis, we use a National Instrument’s Vector Signal Transceiver (VST), which is a software defined radio (SDR) platform, to implement an EPC global Class-1 Generation-2 RFID reader. The implemented reader can successfully retrieve the tag ID of a commercial passive tag with Miller-modulated subcarrier coding.
This work uses software simulation and VST implementation to compare two decoding methods, symbol by symbol decoding method and Viterbi algorithm sequence decoding method, for the tag backscatter signals with Miller-modulated subcarrier coding.
Experimental measurements in a microwave anechoic chamber and a meeting room are performed to compare the bit error rate and tag read rate of the two methods.
Experimental results show that the tag reader rates of the implemented reader and an Impinj commercial reader are comparable.

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