This paper, as the continuation of Parts I and II on Fundamental Limits of Communication in Interference Networks, is related to the study of information flow in networks with strong interference. First, the concept of strong interference is more broadly defined: a network is said to be in the strong interference regime when the coding scheme achieving the capacity region is such that each rece...

In this paper, we propose a low-complexity, secrecy capacity achieving polar coding scheme for the cognitive interference channel with confidential messages (CICC) under the strong secrecy criterion. Existing polar coding schemes for interference channels rely on the use of polar codes for the multiple access channel, the code construction problem of which can be complicated. We show that the w...

Resource allocation plays a critical role to enhance the performance of cognitive orthogonal frequency division multiplexing (OFDM) network. However, due to lack the cooperation between cognitive network and primary network, the channel state information (CSI) between cognitive radio (CR) user and primary user (PU) could not be estimated precisely. In this work, a resource allocation problem ov...

This paper studies causal inference in randomized experiments under network interference. Commonly used models of interference posit that treatments assigned to alters beyond a certain distance from the ego have no effect on ego's response. However, this assumption is violated common social interactions. We propose substantially weaker model “approximate neighborhood interference” (ANI) which f...

The concept of cognitive radio pioneered by Mitola promises to change the future of wireless communication especially in the area of spectrum management. Currently, the command and control strategy employed in spectrum assignment is too rigid and needs to be reviewed. Recent studies have shown that assigned spectrum is underutilized spectrally and temporally. Cognitive radio provides a viable s...

The rapid proliferation of wireless systems makes interference management more and more important. This paper presents a novel cognitive coexistence framework, which enables an infrastructure system to reduce interference to ad-hoc or peerto-peer communication links in close proximity. Motivated by the superior resources of the infrastructure system, we study how its centralized resource alloca...

Data communication is severely affected in the mobile adhoc cognitive networks (MACNets) due to link instability and channel interference. The availability and stability of each link in MACNets highly depends on not only the relative movement of neighbor nodes but also the adjacent communication among primary nodes and among cognitive nodes. So, in the existing system a cross-layer distributed ...

We present new outer bounds to the individual rates and the conditions under which these bounds become tight for the symmetric Gaussian cognitive radio (CR) channel in the low interference gain regime. The CR transmitter is assumed to use dirty paper coding while deriving the outer bounds. The capacity of the CR channel in the low interference scenario is known when the CR employs “polite” appr...

This paper evaluates the intercept and outage probability of a decode-and-forward (DF) underlay cognitive radio network. The secondary users are subject to interference limitations from the primary network, with an eavesdropper tapping the second hop of cognitive network, when all the links undergo Rayleigh fading. For this threshold-based system, without assuming that the DF relays can always ...