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This paper studies the K > 2 user cognitive radio network. In this paper, there are one licensed transmit-receive pair and K - 1 cognitive transmit-receive pairs wishing to communicate simultaneously. For the case of a class of ??very strong?? interference channels, this paper shows that all users can simultaneously communicate as if all cross-channels in the interference network were absent.
This paper considers the problem of transmitting the difference of two positively correlated Gaussian sources over a two-user additive Gaussian noise multiple access channel (MAC). The goal is to recover this difference within an average mean squared error distortion criterion. Each transmitter has access to only one of the two Gaussian sources and is limited by an average power constraint. In this...
A simple lemma is derived that allows to transform a general single-user (non-Gaussian, non-additive) continuous-alphabet channel as well as a general multiple-access channel into a modulo-additive noise channel. While in general the transformation is information lossy, it allows to leverage linear coding techniques and capacity results derived for networks comprised of additive Gaussian nodes to...
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