TV White Space standardization and regulation in Europe

Mueck, Markus; Noguet, Dominique

doi:10.1109/wirelessvitae.2011.5940837

Cited by 33 publications

(11 citation statements)

References 4 publications

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“…Thus, CR technology is foreseen to occur in the interleaved spectrum where opportunistic usage is expected, as non-interference with incumbents is requested in these channels. Owing to the good propagation properties of UHF signals, various scenarios are foreseen [22].…”

Section: Context Of the Tvws And Key Requirementsmentioning

confidence: 99%

Advances in opportunistic radio technologies for TVWS

Noguet

Gautier

Berg

2011

J Wireless Com Network

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Cognitive radio has been an active research area in wireless communications over the past 10 years. TV Digital Switch Over resulted in new regulatory regimes, which offer the first large-scale opportunity for cognitive radio and networks. This article considers the most recent regulatory rules for TV White Space opportunistic usage, and proposes technologies to operate in these bands. It addresses techniques to assess channel vacancy by the cognitive radio, focusing on the two incumbent systems of the TV bands, namely TV stations and wireless microphones. Spectrum-sensing performance is discussed under TV White Space regulation parameters. Then, modulation schemes for the opportunistic radio are discussed, showing the limitations of classical multi-carrier techniques and the advantages of filter bank modulations. In particular, the low adjacent band leakage of filter bank is addressed, and its benefit for spectrum pooling is stressed as a means to offer broadband access through channel aggregation.

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Section: Context Of the Tvws And Key Requirementsmentioning

confidence: 99%

Advances in opportunistic radio technologies for TVWS

Noguet

Gautier

Berg

2011

J Wireless Com Network

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“…Significant economic, commercial, and social benefits are expected as a result of digital switchover. The use of TVWS is expected to take place at 470-862 MHz [2]. This frequency range has different degrees of utilization in different parts of the world.…”

Section: Operation In Tvwsmentioning

confidence: 99%

“…Cognitive radio is a promising new technology for enabling access to additional spectrum. Cognitive radio for TVWS has emerged over the past few years [1] and the FCC have officially opened up TVWS spectrum without strict requirements for channel sensing at the terminal [2]. The Office Of Communication (Ofcom) in the UK has taken a similar approach.…”

Section: Introductionmentioning

confidence: 99%

TVWS extension of the 3GPP/ITU channel model

Almesaeed

Doufexi

Dahnoun

et al. 2013

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

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Recently many cellular and WLAN standards are considering operation in the TV bands due to enhanced coverage and access to additional bandwidth. To accurately assess the performance of wireless communication systems operating in the TeleVision White Space (TVWS) spectrum, a new channel model is required that accounts for the unique propagation characteristics in the UHF band. This paper proposes an extension to the existing 3GPP/ITU channel model for operation at frequencies from 400 MHz (bottom of the TVWS band) up to 5 GHz (top of the WLAN band). The channel model is suitable for urban environments and the raw propagation data was generated using a state-of-the-art 3D ray-tracing tool. Results are presented as cumulative distribution functions of total received power, RMS delay spread, K-factor and RMS angular spread (azimuth and elevation). The probability of line-of-sight as function of distance and best-fit parameters for large and small scale fading are also presented.

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“…TVWS are frequencies available for unlicensed use at locations where the spectrum is not being used by licensed services, such as television broadcasting. This spectrum is located from 470 MHz to 790 MHz in Europe [2]. The antennas usually used for this band are geometrically large to cover the entire frequency band.…”

Section: Introductionmentioning

confidence: 99%

Large-Signal Analysis and Characterization of a RF SOI-based Tunable Notch Antenna for LTE in TV White Space Frequency Spectrum

Abdallah¹,

Bories²,

Nicolas³

et al. 2017

EAI Endorsed Transactions on Cognitive Communications

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The demand for spectrum resources has increased dramatically with the explosion of wireless mobile devices and services. The Cognitive Radio (CR) associated with TV white space frequencies defined between 470 MHz to 790 MHz is one solution to excel the spectrum resources shortage and address LTE low bands. The antenna design to cover such a wide band is a twofold challenge. First Electromagnetic fundamental limits impose a tradeoff between antenna efficiency, miniaturization and its frequency band wideness, secondly to be implemented in portable device (around 10 cm typical length) the antenna miniaturization needs is to be strong such as in λ/6 (where λ is the wavelength at 500 MHz). Thus, frequency reconfigurable antennas are suitable candidates and can be easy integrated. In this paper a compact frequencyagile notch antenna for LTE low-band using TV white space frequencies is designed and fabricated. The 18 x 3 mm notch size (area dedicated for the antenna) is only λ/33 at 500 MHz. The antenna aperture tuning is provided by a SOI CMOS tunable capacitor. The novelty of this paper is to present not only classical metrics (gain, return loss…) but also the experimental characterization of parameters that are usually used for active RF components. The non-standard tunable capacitor RF non linearity analysis is carried on and analyzed. The simulated and experimental performances are presented and demonstrate antenna tuning operation from 800 MHz down to 500 MHz. The slot electrical near field distribution is also investigated to confirm acceptable electrical field within the tunable component. High linearity is validated with measured ACLR levels lower than -30 dBc up to 22 dBm input power in the considered frequency range.

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TV White Space standardization and regulation in Europe

Cited by 33 publications

References 4 publications

Advances in opportunistic radio technologies for TVWS

Advances in opportunistic radio technologies for TVWS

TVWS extension of the 3GPP/ITU channel model

Large-Signal Analysis and Characterization of a RF SOI-based Tunable Notch Antenna for LTE in TV White Space Frequency Spectrum

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