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Wireless growth has been limited by the shortage of radio spectrum. While the spectrum assigned to legacy technologies remain unused, new prominent technologies such as Mesh/WiFi networks are forced to crowd into a small unlicensed band, suffering from significant interference and degraded performance. Using economic incentives, dynamic spectrum auctions redistribute spectrum to make it available...
M-QAM is a modulation technology with high spectral efficiency, due to the property of Gray-coded constellation phasor where different bits have distinct anti-noise ability. Scalable video coding has the ability to transmit partial bit streams thus reconstruct lower video quality according to the channel status to cater for the channel fluctuation. A rate-distortion optimized (RDO) wireless video...
M-QAM is a modulation technology with high spectral efficiency, due to the property of Gray-coded constellation phasor where different bits have distinct anti-noise ability. Scalable video coding has the ability to transmit partial bit streams thus reconstruct lower video quality according to the channel status to cater for the channel fluctuation. A rate-distortion optimized (RDO) wireless video...
Efficient spectrum allocation in open spectrum systems is a challenging problem, particularly for devices with constrained communication resources such as sensor and mobile ad hoc networks. We propose a device-centric spectrum management scheme with low communication costs, where users observe local interference patterns and act independently according to preset spectrum rules. We propose five rules...
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