Analyzing the availability of TV white spaces in dynamic broadcast

Abstract

TV White Spaces (TVWS) are a promising frequency resource which will potentially enable various new wireless applications in the field of consumer electronics. Typically, the availability of TVWS is calculated assuming a static frequency allocation of traditional digital terrestrial TV (DTT) networks. In the present paper, additionally, a flexible frequency allocation of a Dynamic Broadcast system is analyzed. A realistic case study is depicted, comparing a traditional DTT network and Dynamic Broadcast with respect to the available amount of TVWS. The outcome indicates that the freed capacity by implementing Dynamic Broadcast can result in a significant increase of available frequency resources for white space devices, as long as an appropriate allocation strategy is chosen. The differences of individual network configurations are studied by means of computer simulations and conclusions are drawn with regard to the network optimization process of Dynamic Broadcast. 1

IoT‐Based Management Platform for Real‐Time Spectrum and Energy Optimization of Broadcasting Networks

“…TVWS databases are designed and updated based on network modeling and measurement campaign data. TVWS databases are defined based on different rules and optimization strategies to achieve a high level of protection, a high amount of available TVWS, or a certain trade-off between both [9]. However, this constraint may limit in some way the potential spectrum usage efficiency of cognitive radio techniques.…”

“…In [9], the authors analyzed the white space availability in a dynamic network able to switch between broadcast and broadband modes and decide whether to pretransmit content or not, to optimize white space availability. In such scenario, Dynamic Broadcast significantly increased the local TVWS availability [9].…”

“…In such scenario, Dynamic Broadcast significantly increased the local TVWS availability [9]. However, the feedback network platform feasibility is not investigated.…”

TV white space utility in urban and rural environments

“…Firstly, the rules for WSD operation assume a transmitter-centric perspective, where the exact locations of WSD receivers are unknown. By applying a reference geometry with a reference path loss model the transmit power of a WSD can be transformed into a received signal power: (2) is the expected reference path loss for the WSD transmission and is the noise power at the receiver. Further, as WSDs are typically operated in interference-limited environments, it is assumed that aggregate interference from TV signals and from other WSDs can be treated as additive noise.…”

“…However, frequencies, which do not offer a TV service at a certain location, do not necessarily have the potential to be exploited by other wireless devices. Co-channel and adjacent channel interference into existing TV receivers can prohibit the use of the spectrum [2]. Furthermore, WSDs themselves may be faced with high levels of interference, which reduce the useful portion of TVWS.…”