Radio planning, spectrum management, communications electronic warfare, digital cartography & interactive web TV
In: Articulos, Productos 18 mar 2013 Etiquetas:

Iceland’s spectrum regulator, PFS, has bought ATDI’s flagship planning and modelling tool ICS telecom to help it manage and exploit the country’s spectrum resources.

Iceland, with a population of just 322,000, is slowly recovering from 2008’s banking and financial crisis. Now bolstered by increasingly positive economic news and a higher status from ratings agencies such as Fitch, the island nation is growing in confidence once more.

“PFS’s purchase of ICS telecom is definitely with one eye on the future,” notes ATDI Ltd access networks lead engineer Paul Grant. “ICS telecom is the perfect tool for both seeing what you have and what you can do with it so, clearly, the management at PFS is looking at what new services are feasible as economic confidence grows – while also bearing in mind Iceland’s unique geography.”

The country’s population is concentrated in the capital city, Reykjavík, which is home to 120,000 people. The other 202,000 are scattered at a density of three per square kilometre; the equivalent figure for England is 407.

“Europe’s most active volcano, spewing clouds of dust and potentially affecting telecommunication and broadcast networks, is only one of PFS’s many challenges. The UK is only too aware of the effects of recent eruptions but a lesser known fact is the effect of volcanic ash on signal attenuation and reduced signal strength. Modelling real-life scenarios with ICS telecom enables the regulator to understand the impact of such an occurrence and provide mitigation solutions.”

“Saying that, statistics gathered from recent eruptions show that the largest disruption comes from overloading due to high user demand,” Paul comments. “Being able to manage increased network traffic during emergencies is an integral feature ICS telecom and one used by many blue-light service networks globally.”

In: Non classé 22 nov 2012 Etiquetas:,

ATDI is helping universities to provide the best software support for educational programs related to radio studies. ATDI offers to educational and research institutions software products, trainings and other resources that are required during radio-related exercises and simulations. With ATDI, students get the best tools existing on the market that are suitable even for the most complicated radioplanning tasks. In addition, ATDI provides its products and services at special rates available only for students and universities.

Click here to learn more about ATDI special offers for its flagship software tools ICS telecom and HTZ warfare available only to students and educational institutions.

Contact us for any additional information

In: Non classé 22 nov 2012 Etiquetas:, ,

Ofcom (UK) and the Government have decided that a new organization should be established and run by the new 800 MHz band licensees to manage this interference mitigation.

  • The interference model calculates the probability of interference from new LTE transmissions in the 800 MHz band to existing DTT coverage and identifies the set of pixels to which information and filters need to be sent in order to meet the standards defined in Key Performance Indicators (KPIs), and produces a list of addresses of potentially affected households
  • The model is based on output data provided by the broadcasters UK Planning Model (UKPM) but can also be calculated by ICS designer and ICS telecom

All features required to perform the DTT vs LTE are now available in ICS designer and ICS telecom.

General description of the method

Inputs

  • A text file containing X, Y, address, households, mS, sigmaS, mU, sigmaU
  • Coordinates (lat or Y / long or X / Coordinate code)
  • Number of households within the pixel
  • Received wanted signal power median (dBuV/m)
  • Received wanted signal power standard deviation (dB)
  • Received DTT interferer signal power median (dBuV/m)
  • Received DTT interferer signal power standard deviation (dB)
  • Serving DTT transmitter and channel numbers
  • Clutter data relevant to propagation (i.e. urban, suburban,open)
  • Resolution of the text file: User defined (by default 100m*100m per address)
  • A DTM with a given resolution lower than or equal to 100m
  • Location and parameters of all LTE stations to be considered
  • C/I protection ratios
  • Parameters of the propagation model. Any model available in ICS designer or ICS telecom can be used for this study (1546-4, 1812-2 modified, 525/526, …)

Calculations

  • For each address point, calculation of DTT location probability q due to interference from DTT stations only. This will be made using (mS, sigmaS) and (mU, sigmaU) as inputs of the sum of log-normal variables
  • Methods: Fenton-Wilkinson, Schwartz and Yeh
  • For each address point, calculation of the power received from each LTE station, weighted by the relevant C/I
  • For each address point, calculation of mean and standard deviation of the sum of weighted LTE received power, also called mV, sigmaV
  • Calculations of mZ, sigmaZ corresponding to the sum of all interfering signals (DTT and LTE) given by (mU, sigmaU) and (mV, sigmaV), according to the sum of log-normal variables
  • Calculation of q’ on each address point corresponding to the reduced DTT location probability due to additional interference from adjacent-channel LTE base stations

Report

  • A table listing for each address point, 4 fields will be added: (mZ, sigmaZ, q and q’)
  • A map giving the value of q’ (in percent) on each address point (by default 100m*100m)

Note : If the DTT stations (location and parameters) are provided, the calculations of mS, sigmaS, mU, sigmaU are also possible with ICS designer and ICS telecom.