Name
Title | ||
|---|---|---|
Secrecy Outage Analysis of Non-Orthogonal Spectrum Sharing for Heterogeneous Cellular Networks. |
Abstract | ||
|---|---|---|
In this paper, we investigate physical-layer security for a heterogeneous cellular network consisting of a macro cell and a small cell in the presence of a passive eavesdropper that intends to tap both the macro-cell and small-cell transmissions. Both the orthogonal spectrum sharing (OSS) and non-orthogonal spectrum sharing (NOSS) are considered for the heterogeneous cellular network. The OSS allows the macro cell and small cell to access a given spectrum band in an orthogonal manner, whereas the NOSS enables them to access the same spectrum simultaneously and mutual interference exits. As a consequence, we present two NOSS schemes, namely the interference-limited NOSS (IL-NOSS) and interference-canceled NOSS (IC-NOSS), where the mutual interference is constrained below a tolerable level in the IL-NOSS through power control and the IC-NOSS scheme exploits a specially-designed signal for canceling out the interference received a legitimate cellular user while confusing the passive eavesdropper. We derive closed-form expressions for an overall secrecy outage probability of the OSS, IL-NOSS, and IC-NOSS schemes, which take into account the transmission secrecy of both the macro cell and small cell. We further characterize the secrecy diversity of OSS, IL-NOSS and IC-NOSS schemes through an asymptotic secrecy outage analysis in the high signal-to-noise ratio region. It is shown that the OSS and IL-NOSS methods obtain the same secrecy diversity gain of zero only, and a higher secrecy diversity gain of one is achieved by the IC-NOSS scheme. Additionally, numerical results demonstrate that the IC-NOSS scheme significantly performs better than the OSS and IL-NOSS methods in terms of the overall secrecy outage probability. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/TCOMM.2019.2924899 | IEEE Transactions on Communications |
Keywords | Field | DocType |
Power system reliability,Probability,Cellular networks,Interference,Signal to noise ratio,Computer architecture,Heterogeneous networks | Diversity gain,Mathematical optimization,Expression (mathematics),Secrecy,Power control,Computer network,Exploit,Cellular network,Interference (wave propagation),Spectrum sharing,Mathematics | Journal |
Volume | Issue | ISSN |
abs/1901.09417 | 9 | 0090-6778 |
Citations | PageRank | References |
0 | 0.34 | 35 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| YuLong Zou | 1 | 1671 | 98.76 |
| Tong Wu | 2 | 50 | 7.30 |
| Ming Sun | 3 | 91 | 16.25 |
| Jia Zhu | 4 | 6 | 3.76 |
| Mujun Qian | 5 | 0 | 2.37 |
| Chen Liu | 6 | 1 | 1.05 |