On Secrecy Outage Probability and Average Secrecy Rate of Large‐Scale Cellular Networks

Abstract

We investigate the secrecy performance in large-scale cellular networks, where both Base Stations (BSs) and eavesdroppers follow independent and different homogeneous Poisson point processes (PPPs). Based on the distances between the BS and user, the intended user selects the nearest BS as serving BS to transmit the confidential information. We first derive closedformed expressions of secrecy outage probability and average secrecy rate of a single-antenna system for both noncooperative and cooperative eavesdroppers scenarios. Then, to further improve the secrecy performance through additional spatial degrees of freedom, the above analyses generalize to the multiantenna scenario, where BSs employ the transmit antenna selection (TAS) scheme. Finally, the results show the small-scale fading has a considerable effect on the secrecy performance in certain density of eavesdroppers and small path loss exponent environment, and when the interference caused by BS is considered, the secrecy performance will be reduced. Moreover, the gap of secrecy performance between noncooperative and cooperative eavesdroppers cases is nearly invariable as the number of antennas increases.

Analysis of Eavesdropping Region in Hybrid mmWave-Microwave Wireless Systems

“…Motivated by the benefits of the PLS technology, extensive research efforts have been devoted to the PLS performance analysis and/or PLS scheme design in wireless communication systems [13][14][15][16][17][18][19][20][21][22][23]. For instance, Zhu et al [15] explored the potential of PLS in mmWave ad hoc networks.…”

Statistics of ratios of random variables arising in analysis of wireless Poisson networks

“…• Most of the published works, such as [5][6][7][8], analysed cellular-like networks where the closest or strongest Tx communicated with the probe Rx, and the other Txs were sources of CCI.…”