Spectrum Regulation

ATDI offers spectrum management tools in three formats: a set of desktop tools operating under client-server architecture, a range of applications for embedding into other systems and a range of web utilities that provide specific spectrum management services.

ATDI complements this with a comprehensive consulting service. Its engineers have written user requirement definitions for battlespace and civil spectrum management systems; and they have implemented these systems with regulators, deploying and integrating software into existing systems for billing, contact management and accounts.

ATDI staff have implemented FATs (frequency allocation tables), EFIS (European frequency information system) and other portals to facilitate service access from a regulators’ web site; and ATDI engineers have trained regulator staff in spectrum management business processes and the engineering aspects of the work.

ATDI’s spectrum management tool consists of four main products:

ICS telecom EV allows engineers to plan and model radio communication networks efficiently and to manage network development. Technology-neutral, ICS telecom EV also informs on decisions made in relation to spectrum management. Features include:
  • Interference analysis and frequency planning
  • EMC
  • GSM-R intermodulation
  • Health safety (EMF)
  • Co-existence management studies
  • Population and traffic analysis
  • Advanced reporting capabilities
  • Mixed indoor / outdoor calculations
  • White space device calculations
  • Dynamic spectrum allocations
  • Technology evaluation
  • Site candidates
  • Business modelling
  • Network design
  • Automatic network planning and optimization
  • Spectrum optimization
  • Spectrum engineering
  • Spectrum monitoring
  • Network proving
  • Engineering data sharing
  • System administration
  • Network optimization
  • Regulation constraints
  • Environment constraints
  • Wind turbines interference and constraints
  • International, bi-lateral and regional coordination
  • Integrates a variety of data sources including GIS (multi-maps, multi-resolutions, WMS, WMTS)
  • Manages all wireless technologies from 8kHz to 350GHz
  • Clustering (Smart Grid, Smart cities, Mesh, 5G…)


Spectrum E: Spectrum engineering online
  • Automated import from various databases
  • Automated frequency plan ranking and availability for frequency nomination purposes.
ICS manager is ATDI’s spectrum management database tool which meets the needs of all organizations responsible for the management of spectrum blocks. It manages sites, equipment, licenses and fees.
  • License management and operational management
  • Calculates fees following the technical and administrative parameters of the frequency assignments and the licenses
  • Generates documents (report, invoices, receipts), billing, and payment follow-up
  • International notification and coordination
  • Spectrum monitoring
  • Spectrum planning and frequency assignments
  • Zone allotments and band attributions
  • Web interface, web services, web portals
  • Management of data: antennas, equipment, site, frequency plans, allocation charts (foot notes, services…) etc.
HTZ warfare: Spectrum engineering, radio network planning and communication electronic warfare.
  • Network coverage calculations and analysis
  • Network optimization
  • Site searching
  • Network planning
  • Communication Electronic Warfare (EW)
  • Battlefield communications modeling
  • On-the-move capabilities
  • Radar (coverage, counter-measurement)
  • Jamming
  • Direction finding
  • TDOA
  • Interception
  • Spectrum engineering
  • Frequency coordination
  • Automatic frequency assignment
  • White-space calculations
  • Interference analysis
  • Frequency sharing
  • Map builder (DTM, Clutter, Buildings, Vectors)
  • Online map servers
  • Geoportals
  • Integrated GIS
  • Massive parallelism
  • Remote coverage calculations
  • Access points
  • Load balancing
  • Multi-Core
  • Command line
  • Service area contour analysis for AM broadcast stations in line with ITU-R P.1147-4 (considering day/night coverage)
  • Propagation analyses of digital signals in the VHF/UHF bands using ITU-R P.1546-4 and ITU-R P.1812-2
  • Automated interference analysis and reporting between proposed and incumbent FM broadcast stations in line with ITU-R BS.412-9
  • Microwave
  • Point-to-point link reliability and path profiles reporting using ITU-R P.530-12
  • Automated interference analysis and reporting between proposed and incumbent microwave links per TSB.10-F
  • Air navigation systems
  • Radar line-of-sight coverage according to ITU-R P.525-2
  • Minimum Safe Distance Clearance Contour generation for navigational aids (VOR, DME, TACAN)
  • Siting analysis for wind turbine proposals
  • Worst-case Fresnel Zone analysis for microwave links.
  • Talk-out and talk-in coverage analysis using multiple propagation models including Longley-Rice, Okumura-Hata-Davidson and ITU-R P.1546
  • Automated service area reliability, degradation analysis and reporting between proposed stations and co-and adjacent channel incumbent stations.
  • Skywave and groundwave propagation simulation based on ITU-R P.533-10 and ITU-R P.368-9
  • Point-to-point skywave signal-to-noise plots
  • Percentage of day covered coverage prediction type.
  • Customizable 2D prediction displays
  • 3D terrain-view with vector and prediction overlay
  • Percentage coverage analysis
  • SHP vector import and coverage carving
  • Downlink coverage overlap reporting
  • Report template editing features
  • Skywave and Groundwave propagation simulation based on ITU-R P.533-10 and ITU-R P.368-9.
Controlling data and putting it to work


A European regulator needed to know the location, purpose and power of each base station in- country. In addition, due to the nation’s strong tradition of open government, it was important for the regulator to be able to publish this information for public scrutiny and comment. ATDI was tasked to collate data from competing companies using the spectrum, and establish how to integrate that information into the regulator’s existing systems. Finally they were to present the figures as a workable database which could be accessed, searched and updated via the current spectrum management system.


ATDI analyzed the process of importing external operator data into the database management system of ICS manager software tool, and created a process which utilized the new Harmonized Computer Method (HCM) functionality component within ICS manager. On receipt of information about a base stations from operators, the regulator was able to import, access and amend the data as required. The end result was a database incorporating every tower and its functions across the country. This enabled the regulator to meet the required provision of radio communications services across the nation, while assuring the Green-lobby that power was not being wasted nor were the population being subjected to unnecessarily emissions.

ATDI: Putting data to good use

Fields strenght exposure


Limited information can result in citizens worrying and complaining. Authorities often face the dilemma: digital growth vs. citizen protection. While local councils have limited legal rights to prevent the roll-out of base stations, politicians continue to have influence which means concerns about human exposure may hamper the development of broadband communications. Regulators play a key role as a trusted party: they can gather technical information from operators, disclose information publicly, perform simulations and check for any potential issues with measurements, propose mitigation tactics and discuss implementation with operators while making, results publicly available, as well as organizing national discussions and issuing guidelines.


ICS telecom can calculate field strength exposure based on a high-resolution cartographic data-set including: Digital Terrain Model (DTM) describing the ground altitude of each point, building layer describing the contour and the height of each building, in raster format  – where possible in vector format – image form WMS servers (Bing, Google), and an address database coming from Bing servers. In addition to 3D coverage calculations, which include the power sum of all signals received based on ECC 1999 method for building facades and/or outdoor/indoor in LOS/NLOS mode from street to building rooftop. Graphical analysis of hot points on a given point (address), can provide information about received signals and the level at which each signal is received. Hot points can be located on the 2D view as well and streetview images around a given hot point can be displayed – hot points are automatically reported. ATDI’s solution can provide public access to the information. Locations with field strengths greater than a given value can be published online. Transmitting sites can be located on the map including field strengths on buildings. Thanks to a geo-reverse location engine, information about exposure levels can be accessed. Protected sites can be located on the map (schools, hospitals). A web portal can be fully customized on demand.

ATDI: The answer to interference

Smoothing the path of radio auction


A European regulator was preparing to auction spectrum to operators for LTE mobile networks. They asked ATDI to plan and model to identify the potential of the frequencies, areas where there may be issues and to recommend what strategies and tactics were available to reduce or remove those issues. All parties were acutely conscious that in this particularly mountainous country, the population was concentrated in a few cities and that the proposed frequencies were close to those used by television broadcasters; significant interference to either the television or LTE signals would be unacceptable, neither would the wholesale exclusion of the rural population from services.


To reduce the interference between television and LTE networks, several mitigation techniques were investigated in a sample area around the capital city. One of the most efficient mitigation techniques was to limit the interfering LTE base stations to only vertical polarization; based on the fact that, with a few minor exceptions, the country’s digital television network is horizontally polarized. ATDI also proposed that while network designs were being completed, LTE operators should consider the interference potential to the television networks and suggest mitigation techniques they could deploy to overcome the effects, including filtering. In addition, the company advocated a feasibility study to assess the re-assignment of spectrum in affected areas away from channels 58 to 60; the study would also look at the effect of not using these channels in highly populated areas.

ATDI: Smoothing the pathway to radio auctions