小型基地站（Small Cell eNB）是一種低功率的無線接入節點或小型基地台，為了要實現低功率的無線接入點之小基站基地台，本研究利用軟體無線電平台USRP B210，進行小基站基地台之裝設，並搭配srsLTE軟體以及全球用戶識別卡（UMTS Subscriber Identity Module, USIM）的製作與設定，進行長期演進技術（Long Term Evolution, LTE）第4代行動通訊系統之實驗。從實驗中可以瞭解到不同的實驗參數與基地台性能的表現，例如接收信號強度指標（Received Signal Strength Indication, RSSI）、參考信號接收功率（Reference Signal Receiving Power, RSRP）、參考信號接收品質（Reference Signal Receiving Quality, RSRQ）、信號與干擾加雜訊比（Signal to noise ratio, SNR）等數據，並且對於基地台和手機連線的信號強度進行量測，以了解自製LTE基地台的性能並進行探討。

In order to implement the small cell eNB, which is a low power access point for connection to mobile networks, the software defined radio platform, USRP B210, is used to develop the small cell basestation by installing srsLTE software in Linux and making customized the global subscriber identity card (UMTS Subscriber Identity Module, USIM) to carry out the experiment of LTE mobile communication system. From the measurement of the system, we can record and analyze the receiving signal characteristics, such as received signal strength indication (RSSI), reference signal received power (RSRP), reference signal reception quality (RSRQ), signal to interference plus noise ratio (SINR), etc., to understand the performance of the developed LTE small cell eNB.