Modelling Wireless

Followed through Opnet Tutorial tutorial to work with wireless lans in Opnet ( I have emailed WiMax forum for Wimax Models)

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How To Model a wired network

How to work with scenario’s and describe the differences between senarios

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  • ATM Quality
  • On the Fly Trade Up Between Raw Capcity of Line and Quality
  • Backhaul is how one Wimax tower would speak to the other ( 5Ghz Range )
  • Needs to be Lower the 10 Ghz Due to the Technogy for Long Distance

Non Line Of Site ( Convient forMobile Users )

  • Lower Frequency ( Under 10 Ghz )

Line Of Site ( Higher Bandwidth Lower Error Rates )

  • Higher Frequency (10 – 66Ghz )

Inverse Fast Fourier Transform is used in a WiMAX transmitter

Fast Fourier Transform) is used in a WiMAX receiver

How It Works?

  1. Base Stations want to communicate with WiMax Access Point By Random Interupt
  2. MAC uses scheduling Algorithm
  3. Once Completed they are given a Slot at the access point which can be adjusted and will remain the base stations untill not needed
  4. QoS Is Balanced By the access point depending on the users QoS Settings

Transmitter and Receiver RF chains in WiMAX

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Opnet Training

Completed http://www.coba.usf.edu/departments/isds/faculty/agrawal/opnet/OPNET_WAN_Instructions.pdf , and getting to grips with connections and model’s inside Opnet , Must learn how to do it wirelessly!

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How Stuff Works

WiMax and 802.11n

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Read through the Wikipedia Pages to get a basic outline of each technology

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