Intelligent Interference Exploitation for Heterogeneous Cellular Networks against Eavesdropping
Yulong Zou

TL;DR
This paper introduces a novel interference-canceled underlay spectrum sharing scheme for heterogeneous cellular networks, significantly improving secrecy performance against eavesdroppers by leveraging mutual interference.
Contribution
The paper proposes the interference-canceled USS (IC-USS) scheme, which enhances secrecy diversity gain and outage probability performance compared to traditional spectrum sharing methods.
Findings
IC-USS achieves a secrecy diversity gain of one.
IC-USS asymptotically reduces outage probability to zero.
Numerical results show IC-USS outperforms OSS and IL-USS against eavesdropping.
Abstract
This paper explores the co-existence of a macro cell and a small cell for heterogeneous cellular networks, where a macro base station (MBS) and small base station (SBS) transmit to respective macro user (MU) and small user (SU) through their shared spectrum in the face of a common eavesdropper. We consider two spectrum sharing mechanisms, namely the overlay spectrum sharing (OSS) and underlay spectrum sharing (USS). In the OSS, MBS and SBS take turns to access their shared spectrum. By contrast, the USS allows MBS and SBS to simultaneously transmit over the shared spectrum with the aid of power control for limiting their mutual interference, thus called interference-limited USS (IL-USS). In order to take advantage of mutual interference in confusing the eavesdropper without causing adverse effect on the MU, we propose an interference-canceled USS (IC-USS) scheme. Closed-form expressions…
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Cooperative Communication and Network Coding · Wireless Communication Security Techniques
