A TV White Space Wireless Broadband Prototype for Wireless Regional Area Network

Harada, Hiroshi; Makino, Kiminobu; Mizutani, Keiichi; Matsumura, Toshiro

doi:10.1109/wpmc.2018.8713057

Cited by 4 publications

(6 citation statements)

References 2 publications

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“…The ARIB STD-T103-compliant BS and MS [5] were used in the VHF-band radio propagation measurement experiments in each field. The ARIB STD-T103 transmission signal is based on orthogonal frequency division multiplexing (OFDM).…”

Section: A Experimental Instrumentsmentioning

confidence: 99%

Radio-Protected Area Estimation Model Using Location-Dependent Gain for a Spectrum Sharing System in the VHF-Band

Minaki

Yanase

Tomida

et al. 2023

IEEE Open J. Veh. Technol.

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This paper proposes a radio-protected area (RPA) estimation model that achieves full protection and avoids overprotection by adding an appropriate margin to the extended-Hata (EH) model, for realizing efficient spectrum sharing in the V-High-band. This additional margin, called location gain, is a location-dependent value that accounts for knife-edge losses calculated from topographic information. This study experimentally obtains the location gain by conducting VHF-band-based propagation experiments in urban and suburban areas. Subsequently, we developed an estimation formula for the location gain using topographic data, which include correction terms based on the experimental data. As a result, RPA can be estimated using only the topographic data, excluding the need for propagation experiments. The proposed model resolved the problems of the EH model (incomplete protection) and free-space (FS) model (overprotection). In urban and suburban areas, the proposed model achieved full protection and over 99.7% reduction in the RPA size of the FS model when the threshold of the received power for determining the RPA was set to -80 dBm.

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Section: A Experimental Instrumentsmentioning

confidence: 99%

Radio-Protected Area Estimation Model Using Location-Dependent Gain for a Spectrum Sharing System in the VHF-Band

Minaki

Yanase

Tomida

et al. 2023

IEEE Open J. Veh. Technol.

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“…The differences between the 512 and 1024-point FFT systems are in terms of the following: FFT size, frame length, OFDM symbol length, and CP length. In this study, we focused only on the 1024-point FFT-applied Mode 1 owing to its widespread usage in Japan [21]. As the 1024-point FFTapplied systems achieve a CP of over 20 μs, they can support delayed paths of greater than 20 μs.…”

Section: B Specificationmentioning

confidence: 99%

“…Therefore, ARIB T103/IEEE 802.16n is expected to be an effective communication system for V2X to meet the requirement of super-large-coverage over 10 km and higher transmission rate over several Mbps. However, all the modulation schemes developed in previous studies [21], including uplink and downlink, with and without diversity, for ARIB T103/IEEE 802.16n were not comprehensively analyzed using computer simulations and experimental evaluations. Additionally, the transmission distance achieved using the ARIB T103/IEEE 802.16n has not been analyzed.…”

mentioning

confidence: 99%

“…The bit error rate (BER) performance was evaluated using 64 QAM-OFDM and maximum-ratio combining (MRC) diversity via computer simulations. Moreover, a prototype of ARIB T103/IEEE 802.16n was developed, and the transmission performance of the downlink was evaluated in a radio propagation environment in the VHF band [21]. This study is an extended version of our previous study, wherein we summarize the use cases and specifications of the ARIB T103/IEEE 802.16n system and comprehensively evaluate the transmission performance of both downlink and uplink in a VHF-band radio propagation environment through computer simulations and experimental evaluation using our WRAN prototype.…”

mentioning

confidence: 99%

“…• We formulated the use cases and specifications of the ARIB T103/IEEE 802.16n for IoT and V2X in the VHF band. • In addition to the computer simulation and experimental evaluation results in [1] and [21], the transmission performance of ARIB T103/IEEE 802.16n with all the modulation schemes, uplink and downlink, and with and without diversity was comprehensively evaluated through computer simulations and experimental analysis of the transmission characteristics of the VHF band. The results of the computer simulation were validated based on the experimental results obtained from our WRAN prototype.…”

mentioning

confidence: 99%

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Super-Large-Coverage Standardized Wireless Communication System and Its Implementation in VHF Band for IoT and V2X

Makino,

Mizutani,

Matsumura

et al. 2023

IEEE Open J. Veh. Technol.

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This paper presents a comprehensive evaluation of the performance of a super-large-coverage mobile communication system for wireless regional area networks (WRANs) in the very-high-frequency (VHF) band. The system was standardized as ARIB STD-T103 and IEEE 802.16n. It can transmit data over a distance of 10 km or more at a transmission rate of several megabits per second (Mbps). It is particularly suitable for transmitting sensor and monitoring information, including moving images, over a wide area. First, we present some use cases and determine the feasibility of implementing WRANs for vehicle-to-everything (V2X) and the Internet of Things applications. Subsequently, we evaluate the transmission performance and estimate the transmission distance in the VHF-band radio propagation environment through computer simulations and experimental evaluations with our WRAN prototype. In the evaluation, we also adopt several channel estimation methods for a particular pilot pattern in the downlink. Moreover, we demonstrate the transmission distance that can be achieved with and without a multihop relay based on the evaluation results. Single-hop transmission reaches up to approximately 10 km while maintaining transmission speeds of several Mbps on the uplink, when QPSK is used. Conversely, by using multihop transmission, although the transmission speed is approximately 1/2 to 1/6, the maximum transmission distance is approximately 50 km.

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Radio Sensor Development for Location Estimation Using Radio Big Data of ARIB STD-T103/119-compliant Wireless Communication Systems

Ishizaki

Yamamoto

Asano

et al. 2021

2021 24th International Symposium on Wireless Personal Multimedia Communications (WPMC)

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A TV White Space Wireless Broadband Prototype for Wireless Regional Area Network

Cited by 4 publications

References 2 publications

Radio-Protected Area Estimation Model Using Location-Dependent Gain for a Spectrum Sharing System in the VHF-Band

Radio-Protected Area Estimation Model Using Location-Dependent Gain for a Spectrum Sharing System in the VHF-Band

Super-Large-Coverage Standardized Wireless Communication System and Its Implementation in VHF Band for IoT and V2X

Radio Sensor Development for Location Estimation Using Radio Big Data of ARIB STD-T103/119-compliant Wireless Communication Systems

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