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Engineers are developing a cognitive radio system that can detect and use idle radio spectrum at any time to avoid wireless communication congestion.
In the peak of traffic, if each driver is driving right, the middle and the left are not empty? This idea sounds funny on the highway, but it is true in wireless communication systems. At present, people's smart phones, portable computers, and other wireless Internet access devices are constantly increasing, often causing network congestion due to excessive information volume. Researchers at the University of New York at Buffalo are developing a cognitive radio system to solve this problem.
According to the physicist organization's network on May 6, this cognitive radio system can discover and convert to the best communication band in real time. The research team will develop an algorithm and optimize the operating platform. The project is currently still under development for a period of 4 years. The speed of wireless communication will increase by a factor of 10, which means that it would take 30 minutes to download a movie in the past, but now it takes only 3 minutes.
"People haven't taken full advantage of the spectrum allocated to wireless devices," said Dimitris Padus, professor of electrical engineering at the State University of New York at Buffalo, the lead researcher of the project. "We are developing a system that eliminates inefficiencies." Can transmit as much information as possible while minimizing crosstalk."
From smart collection to sensors monitoring soybean cultivation, all of these wireless devices require radio spectrum, making the communications band increasingly crowded and causing blockages. Blocking not only limits the speed of information sharing in the wireless communication system, but also consumes electricity, causing disconnection of networked computers and interruption of mobile phone calls.
But these problems are not necessarily caused by the lack of radio bands, but also related to the use of the band. According to investigations by the U.S. Federal Communications Commission and other related agencies in the world, the bands allocated to wireless devices are often largely idle, while other bands are overcrowded. For example, most of the AM bands are located in the United States, and their utilization rate is not as good as that of the FM band. Cognitive radios allow people to discover unutilized bands in the entire radio spectrum at any time and use these idle “road segments†to share information.
"It's like an air traffic Control System that guarantees the maximum number of planes to take off and land at airports around the world," Padus said. Buffalo will work with ANDRO Computational Solutions in New York to actually test the technology on a small, unknown flight tool. (Chang Lijun)
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