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We attempt to bridge queuing theory and information theory by considering queue lengths as communication channels conveying information about system parameters. A toy problem is proposed and an information-theoretic lower bound is derived on the queue-length/cost tradeoff which matches (in an order sense) the performance of back-pressure algorithms. The proof is based on the idea of “communication...
The TV whitespaces represent an incredible opportunity for innovation. Along with this opportunity come significant challenges: the whitespaces are very heterogeneous in terms of channel availability as well as quality. This poses a challenge to anyone wishing to achieve uniform or even similar quality of service nationwide. In this paper, we consider using heterogeneity in the emissions limits to...
Communication over inductively-coupled links is becoming prevalent in service delivery for medical, financial, and physical security applications and so there is a growing need to prevent eavesdropping. This paper presents circuit-theoretic and communication-theoretic models of inductively-coupled communication systems. Due to coupling, the presence of an eavesdropper detunes the transfer function...
The TV whitespaces have recently been opened up for semi-unlicensed use by frequency-agile radios. However, there is a potentially significant flaw in the adopted rules: they try to treat the whitespaces in a manner similar to the ISM bands — with per-device transmit-power constraints. Unfortunately, wireless interference aggregates and the population density across the United States of America varies...
A transmitter may have non-causal knowledge of the interference signal being transmitted by another user. Recently, Tarokh and others have raised the possibility of exploiting this knowledge to increase the data rates of a cognitive radio. However, there is a difference between knowing the signal transmitted by the primary and the actual interference at our receiver since there is a wireless channel...
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