The regulation of radiocommunications is a complex business. Commonly termed spectrum management, its function today varies widely across Europe. Some countries still practice command and control of resources while others are already liberal and leave the market to make its own decisions. Mostly, though, spectrum regulation is mixed.
Some spectrum is designated license-exempt, the so-called spectrum commons. Some is designated light touch, where the regulator monitors use. Other spectrum is auctioned off to the highest bidder. Finally, some remains under command and control but with price used as an incentive to promote effective use.
Spectrum regulation is ATDI’s core business; the company offers both software to facilitate regulation and consulting services to help regulators and operators make informed decisions.
ATDI’s regulatory tools are threefold: a set of desktop tools operating under client-server architecture; a range of tools for embedding into other systems; and a range of web-based utilities that provide specific spectrum management services.
ATDI provides a comprehensive consulting service. Its engineers have written user requirement definitions for battlespace and civil spectrum management systems. They have implemented these systems across regulators, deploying and integrating software with existing systems for billing, contact management and accounts.
They have implemented FAT (frequency allocation table), EFIS (European frequency information system) and other portals to permit service access from regulators’ web sites. And ATDI engineers have trained regulators’ staff in spectrum management business processes and the engineering aspects of the work.
ATDI is the spectrum management company.
Requirement specification Our aim is to work with our customers to ensure that we identify their needs and supply goods and services to suit. Frequently our work follows one of the classic software project lifecycles where our first task is to develop a requirements specification using business process engineering techniques. Following that, we have in the past then supplied a mix of standard and custom software.
Implementation ATDI’s software applications are developed for the MS Windows family of operating systems for installation on PC hardware. Installation of the various applications is relatively simple. Mostly our customers do have extensive data records already and much of the implementation phase will be to upload this to the new system or to interface to this data in its existing location.
Training No system solves a business problem unless the human factors are considered with equal weight. During our work we will establish the staff development needs of the intended users as they relate to the system being supplied. We will work to ensure that these needs are satisfied using a mixture of application or technology training, direct assistance and technical support.
Support ATDI recognise that user support is essential to ensure that our customer gets the best out of the supplied system. We offer telephone and email technical support, user group symposia, on-site visits and enhanced training to support users as they advance their skills.
White-Space Device Database
White-Space availability maps (WMTS)
ICS telecomallows engineers to plan and model radiocommunications networks efficiently and to manage network development. Technology-neutral, ICS telecom also informs decisions made on spectrum management.
ICS manageris ATDI’s spectrum management database tool which meets the needs of all organizations responsible for the management of blocks of spectrum. It manages sites, equipment, licenses and fees.
HTZ warfareSpectrum engineering, radio network planning and communication electronic warfare.
Spectrum E: Spectrum Engineering Online
Spectrum Engineering Online
The convenience and compatibility of implementing web-based solutions for workflow intensive tasks has resonated strongly in almost any industry where software applications play a key role in day-to-day operations. The strengths of web applications have tremendous appeal to the spectrum management and Radio Frequency (RF) engineering community. For example, several spectrum regulatory organizations around the world have been working for years at developing systems that will allow them to distribute information about their processes and tools to the public via on-line methods. Radio equipment manufacturers have always been looking to find integration-friendly software platforms that help them demonstrate the capabilities of their radios to a potential customer. Service providers have been looking for software solutions to help them market to and validate potential new subscribers. Web applications offer specific advantages over local software applications in the following areas:
Consumption of client computer resources: zero footprint implementation. (i.e. SSL access)
Cross platform compatibility: Operating system agnostic. Runs off of modern browsers. (i.e. tablet or PC or smartphone)
Ease of distribution of information: database information can be communicated to large groups of people very quickly and easily. (i.e: multi-resolution map databases, relational databases, equipment databases, etc.)
Customization and integration-friendliness: Workflow automation with dedicated interfaces. (i.e. import FCC ULS, WMS stream, integration with SpectrumWatch)
Maintenance: Upgrade distribution is immediate.
Access to resources almost anywhere!
To access the system, a web-connected device with a HTML5-capable web browser is all that is required. While most accesses to the system are expected to be through PCs, the web application has been designed to be functional with tablet computers and smartphones as well. Tablet computer users should see full functionality while smartphone users may not be able to perform certain functions. The recommended web browser for Spectrum-E access is Google Chrome. The newest releases of Mozilla Firefox (9+) and Microsoft Internet Explorer (9+) also feature full HTML5 capability.
Access to Spectrum-E can be delivered in any of the following methods:
User Subscription: Customers will subscribe to access of Spectrum-E hosted on ATDI Inc's servers
Local Area Network (LAN): Spectrum-E and services installed on customer's internal network
Single Computer: Spectrum-E can be installed on an individual user's computer
ATDI Inc. uses 256-bit encryption along with a secure message authentication and key exchange mechanism to keep communication to Spectrum-E secure. For customers who don't have access to the internet in their working environments, Spectrum-E is also offered in an internal Local Area Network (LAN) or single computer flavors.
Below is a sample of some of the things that Spectrum-E offers. 2D coverage plots, TSB88-C compliant service area reliability degradation maps, and 3D terrain view of analysis results:
Service area reliability degradation:
2D Coverage Plot:
3D terrain view with coverage overlay:
The ICS coordinator is a tool for calculating the individual or cumulative effect of stations into test points. Single stations can be defined or a text file with multiple stations can be loaded. In each case the tool will calculate the nuisance field at every test point which is co-channel using a selectable propagation model and applying net frequency discrimination.
A UK station is defined by a location, antenna height, antenna pattern, antenna direction, antenna tilt and maximum ERP. The site height can also be defined or obtained from an internal DTM. The max ERP from a station is modified by the antenna pattern, direction and tilt towards the test point. The path loss is calculated using the selected propagation model, DTM and Clutter. This gives field strength at the test point for each transmitter.
If the station is within the test point's bandwidth, the station is taken into account. If there are other stations at the same site also within the test point bandwidth these stations’ field strengths are power summed together.
What are the benefits?
single click operation
complex calculations made easy to perform
calculations can be repeated with ease
based on Access database for ease of data transfer
Once the total power summed field strengths have been calculated Simplified Multiplication Method (SMM) calculates the final field strength for all sites into the test points.
All emitters interact in some way or other, particularly when located on the same radio site. IMP Calc is a simple to use application into which every transmitter can be loaded. The 3rd, 5th, 7th and 9th order intermodulation products are calculated from the equation IP=Nfx±Mfy where N+M give the order and x and y determine different frequencies. IMP Calc can be embedded within ICS Telecom/HTZ Warfare to allow intermodulation analysis using the decision support tool and spectrum management databases.