FBMC Testbed with Frequency Domain Synchronization and Adaptive Bandwidth

Penner, Maxim; Nabeel, Muhammad; Peissig, Jürgen

doi:10.1109/wimob52687.2021.9606255

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Based on these classifications, the research community divides the testing of wireless systems into two main levels: link-level and system-level. The link-level testing is related to the physical layer (PHY) as well as some functionalities of the medium access control layer (MAC) and involves channel estimation, channel coding, rate matching, multicarrier modulation, and feedback techniques, to name a few [21], [22]. In contrast, system-level testing takes care of upper layers and focuses on system-level multi-cell operations such as handover, interference management, admission control, link adaptation, power control, and resource scheduling and allocation among others [23].…”

Section: Testbeds For 5g and Beyond Cellular Networkmentioning

confidence: 99%

Design Considerations and Deployment Challenges for TurboRAN 5G and Beyond Testbed

et al. 2022

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Prior to standardization, new features, algorithms, and solutions have to be rigorously evaluated and verified using different methods. In this regard, testbeds are considered as one of the most important and effective experimental platforms for performing tests, thus paving the way towards the real-world implementation of many solutions, from the most basic to the most disruptive and innovative ones. Compared to computer simulators, testbeds provide near-realistic implementation and can obtain practical results while posing less risk to live networks. They are also cheaper compared to field trials. Given the crucial role of testbeds in the cellular network ecosystem, it is imperative to create awareness regarding the design challenges associated with constructing an effective and efficient testbed deployment. In this tutorial, we discuss the design considerations and challenges we experienced while deploying an outdoor testbed that we call TurboRAN-a 5G and beyond network testbed facility. It is designed to facilitate the evaluation of early real-world use case algorithm implementations and deployments. We present the process and methodology used to select components, including antennas, amplifiers, base stations, and cabinets, to name a few, and describe the integration of the components to construct a fully operational testbed. Finally, we discuss a use case that demonstrates the TurboRAN's ability to conduct real-world experiments. The use case demonstrates the detrimental impact of sub-optimal handover parameter configuration on network performance-a big challenge in modern cellular communication. This work intends to inspire and guide the development of a cellular testbed by providing a generalized framework that describes step-by-step the efforts made for its construction.INDEX TERMS TurboRAN, 5G and beyond testbed, testbed deployment consideration, testbed deployment challenges.

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Section: Testbeds For 5g and Beyond Cellular Networkmentioning

confidence: 99%

Design Considerations and Deployment Challenges for TurboRAN 5G and Beyond Testbed

et al. 2022

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“…A WiMAX based simulator programmed in MATLAB was developed within the project. The authors in [20] implemented FBMC/OQAM on USRP N310 with GNU Radio, where they concentrated on frequency-domain synchronization issue only. However, in the above works [18][19][20], there is no detail analysis of the joint impact of CFO, residual CFO, channel estimation and equalization on the FBCM/OQAM transceiver.…”

Section: Introductionmentioning

confidence: 99%

Design and Validation of the Physical Layer Functions of FBMC/OQAM Transceiver With Improved Residual Phase Error Correction

et al. 2022

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In this paper, we report experimental results on the development and improvement of the physical layer functions of a filter bank multicarrier with off-set quadrature amplitude modulation (FBMC/OQAM) transceiver using a testbed implemented with programmable software-defined radio (SDR). The developed physical layer approach is similar to the IEEE 802.11a standard, and it has been tested for timing synchronization, carrier frequency offset (CFO) correction, channel estimation and equalization. An investigation into the inherent intrinsic imaginary interference in FBMC/OQAM has been carried out, with initial findings indicating the seriousness of the effect of phase noise (PN). The conventional pilot structure used in IEEE 802.11a cannot be directly applied to FBMC/OQAM, thus, a specially designed pilot scheme is proposed to deal with the residual phase error. Three phase noise estimation schemes have been evaluated, namely phase noise compensation (PNC), extended Kalman filter (EKF) and modified blind phase searching (MBPS) methods. To further suppress the residual interference and enhance the phase error correction, an iterative technique is used after the pilot equalization. The performance of the proposed methods has been evaluated experimentally and via simulation for an indoor environment. The results verify the capabilities of the proof-of-concept transceiver and the developed physical layer functions.

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FBMC Testbed with Frequency Domain Synchronization and Adaptive Bandwidth

Cited by 2 publications

References 6 publications

Design Considerations and Deployment Challenges for TurboRAN 5G and Beyond Testbed

Design Considerations and Deployment Challenges for TurboRAN 5G and Beyond Testbed

Design and Validation of the Physical Layer Functions of FBMC/OQAM Transceiver With Improved Residual Phase Error Correction

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