BOMBOVA

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BOMBOVA

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  • 07.01.2010
  • Mobile WiMAX MIMO Multipath Performance Measurements
  • it is necessary to determine the theoretical maximum data throughput that can be achieved with W iMAX and to establish the reference values in this way. "" in other words, you can not cheat the Physics "", This is the story from the Authors perspective "" Figure 22 shows the maximum achievable throughput for Matrix B mode under variation of the received power. "" Which means, keep this graph in your mind, And forget about doing fancy simulations, You have the answers in the graph. build close field, for performance, always. and put the cost of the fancy test gear, into your retirement package.
  • 03.18.2008
  • Testing raises concerns over 802.11-based high-speed Bluetooth
  • It seems to me, that the author has posted a premise for discussion on rf nearfield potential interference. i asume his intent is to champion the best data rate possible, (highest effective rate) for wireless bluetooth. The discussion so far seems to have gone from an alert to an alarmist reaction. Yet understanding this near field model is the objective. The simplified mathematical model would contain the source, the path loss in wavelengths, etc along with the coupling effiency. In addition the model might be, Three users on a bench seat in a mall using their wireless, the stationary kind; (the mostdebilitating , in my opinion) The moving ones separated by near field are transmitory and in light systems load are invissible to systems performance. The static ones (wifi payphones) and other fixed nearfield apparatus, are the most harmful. The mathmodel, the conducted model and even the radiated model all concur. Only after this conclusion is reached does the application survive its introduction. ( one thing does puzzle me though, is that the radiating device when reduced from its' nominal Po. , reducing power, does not reduce spurious, by a move significant amount other than linear. It may be that a signal generator was used for the real world device... So if that is valid, then the interference in fianal Po. and radiation is more dirty and harmful than presented... " my interest, is only in the application and a best of model outcome. " rtg.