Antenna Systems & Technology - Fall 2011 - (Page 8)

FEATURE ARTICLE An initial feasibility calculation of an operation can be done using the data above. As an example we are illustrating some scenarios. We considered a tonnage of 668 MB/BH/MHz per radio. The following conclusions can be made: • The payback period is directly related to the amount of spectrum available and independent of population density. • Cell radius varies with population density and spectrum available. The radius size determines the service area, with typical values given next: • Indoor coverage with USB: radius < 0.5 km • Indoor coverage with indoor modem: radius < 1 km • Outdoor coverage: radius < 3 km • Rooftop coverage: radius < 6 km to 10 km (depending on topography and morphology) A spreadsheet to do the above calculations can be downloaded from the CelPlan web site at Cell Radius and Breakeven Calculation Leonhard Korowajczuk is a founding partner of CelPlan Technologies and its CEO/CTO. He started his career as R&D engineer at ITT developing Energy, FDM and PCM equipment (Standard Electrica- Rio de Janeiro, Standard Telephone and Cables- London, Bell Telephone Manufacturing- Antwerp and Standard Electrica- Madrid). Attend CelPlan’s presentation at Real Systems Design These calculations provide just a guideline for analysis of the feasibility of certain solutions. A broadband network requires a proper design, which is complex, and extensive market, services and equipment modeling. Advanced RF prediction and traffic simulation tools are essential to do these designs. CelPlan has designed many successful wireless broadband networks and the calculations are based on the experience gained over the years. Tuesday, September 20th - 2:55 PM Planning of Advanced Wireless Systems A 4th generation of wireless communication (LTE, WiMAX) is being deployed, with several new characteristics that should be considered in planning the network. The traffic is entirely IP based, being mainly data and voice as a minor part. Traffic should be characterized by its speed and tonnage. Traffic becomes application and terminal dependent and traffic shaping per application plays a major roll. Framed OFDMA is the technology of choice, with many caveats, as adaptive modulation and coding (up to 64 QAM), MIMO antennas and algorithms. The performance evaluation of these networks is so complex that it requires a new breed of Network planning tools. 8 ANTENNA SYSTEMS & TECHNOLOGY FALL 2011 WWW.ANTENNASONLINE.COM http://WWW.ANTENNASONLINE.COM

Table of Contents for the Digital Edition of Antenna Systems & Technology - Fall 2011

Planning of Advanced Wireless Systems
Selectable Multi-Beam Smart Antennas
AISG OOK Modem Implementations
Antenna Systems 2011: Conference Preview
Editor’s Choice
Test & Measurement
Base Stations
Marketplace, Advertising Index & Calendar of Events
Industry News

Antenna Systems & Technology - Fall 2011