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An article in the March issue of Scientific American reveals a potential technological revolution in the design of communication devices and infrastructure, and as a result - a potential revolution in the quantity, variety, quality and price - of the services that can be expected.
The self-aware radio technology manages itself with reference to past experience. When traveling to work, for example, the technology will measure the transmission characteristics of the various radio waves, their strength and quality - along the route. In this process, an information base will be built that identifies the best communication conditions at any point and at any time.
The walkie-talkies operating during the same trip to work will "jump" between the best communication channels and methods, appropriate for each point and time on the route.
This method is expected to achieve a considerable improvement in the quality and reliability of communication, and at the same time a more efficient utilization of the existing radio frequencies. It is estimated that the derived communication costs are expected to decrease considerably.
"tight in the air"
Today's radio frequencies are overloaded to exhaustion while the demand for additional allocations is constantly increasing. Beyond the known frequencies for AM and FM broadcasting, shortwave for amateurs, and the VHF and UHF channels for television, there are hundreds of channels for cell phones, cordless phones, GPS systems, flight control systems, alarm systems, toys, etc.
The predicted improved efficiency is expected to reverse the shortage trend and create a "flood" of options for using the frequency spectrum.
Radio software
At the heart of the revolution is a technology known as SDR (Software Defined Radio). The development of hardware in recent years makes it possible to produce the functions that make up the walkie-talkies on the basis of a modern computer that functions under the control of radio software. With such a method there is no difficulty in giving the radio the ability to "disguise" itself as a telephone a cell phone or a home alarm system - dynamically.
Today, most walkie-talkies are based on hardware components that are unique to each communication method, and do not allow such flexibility.
For a more detailed article in English
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