Archive for the ‘Software’ Category

Ubiquiti Networks airMAX TDMA MIMO technology

Wednesday, September 23rd, 2009

airmax tdma

The advantages of Ubiquiti Networks airMAX TDMA MIMO technology:
– 300 + subscribers per sectored base station
– 150Mbps + Point to Multipoint speeds
– Low Stable latency responses for VoIP and Video applications as network scales

Be one of the first in the world to try the airMAX MIMO technology and place your order today and we will ship your order as soon as equipment becomes available by the end of August.

Time division multiple access (TDMA)

Technology used for example in GSM networks, Motorola Canopy, DVB, etc. This is a smart and sophisticated system sharing one frequency supporting multiple users on an accrual basis. Each of the users, who share the frequency, has a dedicated time slot. This is in very rapid succession of individual transmissions creates a transmission hannel, called timeslots, used for communication between client and base station unit (access point).

http://74.125.47.132/search?q=cache:gsL3049On9IJ:www.ubnt.com/forum/viewtopic.php%3Ft%3D13327%26start%3D30%26sid%3Dd0aa4e6b66ff25704ca891aa8f3accac+http://www.ubnt.com/forum/viewtopic.php%3Ft%3D14109&cd=1&hl=bg&ct=clnk&gl=bg&client=firefox-a

FROM : http://www.dslreports.com/forum/r22926519-AirMax-compatibility

** To get full AirMax performance, all radios have to be AirMax products.

** AirMax is not compatible with AirOS 3.x or any other manufactures’ products or OS.

** Non-AirMax UBNT products and other manufactures’ products cannot be upgraded to an AirMax product.

And from http://www.ubnt.com/forum/showpost.php?p=50068&postcount=4
If you have AirMax on, and you take note of proper installations signals and fade margins, then you can reach in upwards of 100 user’s. However you must have the bandwidth to support this.

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Radio Mobile an Freeware Software for Design and Calculate Radio Links

Friday, May 29th, 2009

Radio Mobile is used to predict the performance of a radio system.

http://www.cplus.org/rmw/english1.html

Radio Mobile software is a copyright of Roger Coudé VE2DBE. Radio Mobile is dedicated to amateur radio and humanitarian use. Although commercial use is not prohibited, the author cannot be held responsible for its usage. The outputs resulting from the program are under the entire responsibility of the user, and the user should conform to restrictions from external data sources.

About Radio Mobile :

It uses digital terrain elevation data for automatic extraction of path profile between an emitter and a receiver.

You can see antenna patterns and predict results for the wifi link.

Radio Mobile : Zones and LOS

Radio Mobile : Zones and LOS

Radio Mobile : Antenna Pattern

Radio Mobile : Antenna Pattern

Elevation data is also used to produce virtuals maps in background.

Radio Mobile : terrain - Grey scaled slope

Radio Mobile : terrain - Grey scaled slope

Radio Mobile : terrain - X-Ray

Radio Mobile : terrain - X-Ray

Radio Mobile : terrain - Rainbow

Radio Mobile : terrain - Rainbow

The software also provides 3D views, stereoscopic views, and animation.

Radio Mobile : 3d vew of terrain

Radio Mobile : 3d vew of terrain

Background picture can be merged with scanned map, satellite photo or military ADRG.

Radio Mobile : scalling maps overlay

Radio Mobile : scalling maps overlay

FREE WIFI Mapping Soft : Ekahau HeatMapper

Sunday, March 29th, 2009
ekahau wifi map

ekahau wifi map

VIA : dailywireless.org » Ekahau HeatMapper

Ekahau HeatMapper is a free software tool for quick and easy coverage mapping of Wi-Fi (802.11) networks. Ekahau says it’s the only free, easy-to-use tool that shows, on a map, the wireless network coverage in your home or small office. HeatMapper locates all access points and provides a real-time view.

An 50MB.

do not work on VISTA x64!!! so I cant use this.