South African Police Service (SAPS) TETRA Network

captainwifi

Senior Member
Joined
Mar 4, 2005
Messages
834
There is no way it could take 5 years to install the Radio Giga Sundance base stations (R150 000) for each about. Once you have the LTE or Wimax OFDM routines working in software for one base station it is a matter of copying to 100 other base stations. It like saying it will take 5 years to copy Linux to 100 machines.

http://scratchpad.wikia.com/wiki/Sasecurity#Wimax_.2C_LTE.2C_3G_and_OFDM
There are three ways of implementing OFDM as used in 3G, Wimax, LTE and GPRS: TileraMulticore, FpGa and multiple DSP processors in parallel. Only FpGa with 802.16 MAC and PHY cores licensed from SeaSolve and others is a viable way to create community WiMax on 2.4 and 5.8ghz. The problem with companies like SeaSolve is that they don't want to help establish a community WiMax initiative where their IP cores are used on any frequency because it undermines the commercial viability of Vodacom. Their FpGa design will thus have to be reverse engineered using http://www.chipworks.com/circuit.aspx - see BoMarc and the designs published on the Internet. The Tilera is a breakthrough for OFDM as used in Wimax(802.16), LTE and 3G. It replaces multiple FPGA cores and is up to 15 times faster that the TexasInst Davinci DSP series but is not available to the public yet perhaps never. It took a Tilera engineer two months to code OFDM routines using C++ on LinuxNotes. TexasInst DSP cores have reduced the design time by 15 years for a DSP based Wimax solution. FpGa has a very long design cycle but using Sundance design platform which integrates TexasInst and FpGa WiMax can be implemented . The PicoChip implements 300 parallel DSP cores and is distributed by Telco's thus it remains to be seen if they will allow the public at large to use it. A single DSP don't have the bandwidth to implement Viterbi, FFT, Reed-Solomon etc. as used in WiMax and LTE. SeaSolve and others provides MAC and PHY layer 802.16e cores on FpGa which is used to integrate with a custom design .

The SA public trying to setup illegal WiMax on for example 450mhz a frequency used by Flarion in the Nordic countries will have to use TileraMulticore if it ever becomes available or settle for FpGa from Sundance. Any frequency can be used as in SoftwareDefinedRadio, a RfTransceiver is attached to the OFDM processing device. SoftwareDefinedRadio will eventually replace analogue communications as the computing power increases reducing spectrum usage considerably. In a few years Tilera functionality will reduce to the size of a cellphone and power consumption. Multitudes of these devices will form a MeshNetworking grid that will enable real-time ImageProcessing and communication. As Vodacom runs around using Icasa to confiscate these devices we will replace them and merely factor in the cost of continues replacement fully supported in our efforts to integrate black people into the economy by the http://www.npa.gov.za who just can't openly state so.
 

R/SGT

Expert Member
Joined
Dec 7, 2006
Messages
1,609
I agree with you that training and preventing corruption are important, but so is this equipment.

With it control will be able to monitor all the vehicles and dispatch the closest vehicle to a scene, control will also be able to effectively guide the vehicle to the scene thus cutting down on response time.

At the moment if the officers don’t feel like attending a complaint they just don’t answer their radio, I have seen this often enough.

This is not some fancy new toy; communication can mean the difference between life and death for the complainants and for the officers.
 
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