Implementation of Embedded Testbeds Using USRP and GNU-Radio for Performance Measurement and Analysis of PPS and PCO-Based Time Synchronizations

Hyun Jae Park, Cheol-woong Lee, Taeyoung Shin, Byeong-hee Roh, Soo Bum Park and Jungwook Choi
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Hyun Jae Park: Siliconsapiens Corperation, South Korea
Cheol-woong Lee: Ajou University, South Korea
Taeyoung Shin: Ajou University, South Korea
Byeong-hee Roh: Ajou University, South Korea
Soo Bum Park: LIG Nex1, Co. Ltd., South Korea
Jungwook Choi: LIG Nex1, Co. Ltd., South Korea

International Journal of Interdisciplinary Telecommunications and Networking (IJITN), 2021, vol. 13, issue 1, 25-35

Abstract: In wireless networks, time synchronization is one of the key functions for the MAC and the physical layer because it is important to accurately transmit data by maintaining the order and consistency of transmission between nodes. The time synchronization can be divided into centralized and distributed methods and there are many synchronization schemes. However, there are little testbeds for comparing and analyzing various time synchronization schemes in a real environment. Most papers analyze the proposed time synchronization algorithm by simulation, and some testbeds are also configured for the proposed scheme only. In this paper, the authors build embedded testbeds using USRP and GNU-Radio. The two typical methods of the centralized and decentralized time synchronizations, PPS, and PCO-based schemes, respectively, are implemented on the testbeds and their performances are measured and analyzed in the real environment.

Date: 2021
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