OpenSpectrum

back to http://scratchpad.wikia.com/wiki/Sasecurity

Myth of spectrum scarcity
http://www.greaterdemocracy.org/OpenSpectrumFAQ.html

http://dir.salon.com/story/tech/feature/2003/03/12/spectrum/print.html

http://blogs.dialogic.com/open_spectrum/

http://www.ellipsis.co.za/?page_id=6 ...The allocation of a limited amount of radio frequency spectrum in the face of increased infrastructure provision competition is critical in determining the make-up of the market....

This statement like peak oil theory - GlobalWarming is incorrect. You can blanket the entire Gauteng with a single channel on 2.4ghz if you setup enough FreeSpaceOptics and short run fixed wired networks. The lawyers want there to be a scarcity of spectrum so that all sorts of laws can be made regulating the usage of spectrum for which they  have to be paid. Spectrum usage is influenced by user density. Farmers in remote areas should be allowed to use WiMax on 450mhz for example while higher density areas such as cities should first create hotspots via FreeSpaceOptics and use the higher frequencies first. The utilization of spectrum is a balance of trade-offs. The telcos are saying that they would rather have the Sabie forests burn to the ground then allow Sappi to stream fire prevention video on 450Mhz WiMax in the middle of nowhere. The LegalPerspective supports our attempts to prevent forest fires but they have been conned into prosecuting people in the past who broad casted on SABC analogue television frequencies. These cases established a precedent which means that Naspers and MTN can force the LegalPerspective to prosecute people using illegal frequencies. We should explain to the LegalPerspective that if Sabie burns down again in 10 years, mayhem and crime continues to run amok in our streets then just like nobody cares about spectrum pollution in the Sahara dessert nobody will really bother with the South African wasteland. Violence and crime is the number one crises facing South Africa, it can only be solved by giving each person UnlimitedBandwidth. The increase in switching frequency to 100meg on InfraRedLeds was a physics breakthrough in the quest to protect the electromagnetic spectrum because it allows for high speed data using FreeSpaceOptics.

FSO and 300Mhz combo
Because you are in a low user density region Wimax on 300Mhz is ideal. We could have bandwidth for everybody by using 300 - 800Mhz for very long range links and 900 - 6ghz for shorter higher density user base. Thus the entire wireless spectrum is used. But of course there would be interference. So be it, and the solution to high density users causing interference say in a Sandton suburb is to connect as many houses as possible with FSO. Combine FSO and the entire spectrum. Low density users in rural towns would use 425Mhz for example etc. Note that spectrum "scarcity" is a function of user density. In the Sahara dessert, it would be irrational to use 2.4ghz due to Fresnel zone issue, rather use 300Mhz. In the CBD of Jhb one would first bridge each building -to-building using FSO and a layer-3 switch with fiber connecting the FSO nodes on either building.. From each FSO node install a Wi-Fi circuit. While in the Karoo install everybody on 300Mhz and get done with it.

Icasa would of course protest if we were to all just start using the entire spectrum. But as spectrum interference issues present themselves FSO would resolve it.