Secrecy Rate Maximization With Outage Constraint in Multihop Relaying Networks

Abstract

Abstract-In this paper, we study the secure transmission in multihop wireless networks with randomize-and-forward (RaF) relaying, in the presence of randomly distributed eavesdroppers. By considering adaptive encoder with on-off transmission (OFT) scheme, we investigate the optimal design of the wiretap code and routing strategies to maximize the secrecy rate while satisfying the secrecy outage probability (SOP) constraint. We derive the exact expressions for the optimal rate parameters of the wiretap code. Then the secure routing problem is solved by revising the classical Bellman-Ford algorithm. Simulation results are conducted to verify our analysis.

Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments

“…Next, substituting Equation (35) into Equation (34), and after some manipulations, we obtain Equation (32) and finish the proof.…”

“…Equation (28) shows that there are 04 possible cases for the set U 1 , i.e., U 1 = {∅}, U 1 = {N 1 }, U 1 = {N 2 }, U 1 = {N 1 , N 2 }. In Equation (28), the terms SOP CMT N 0 ,{∅} and SOP CMT N 0 ,{N 2 } can be calculated as in (32). Considering the term SOP CMT N 0 ,{N 1 } , which can be written by…”

“…The authors of [26][27][28][29] proposed secure communication protocols for two-way relay networks. In [30][31][32][33], the end-to-end secrecy performance of multi-hop relaying systems is investigated.Thus far, most published works related to performance evaluation assume that transceiver hardware of wireless terminals is perfect. However, in practice, it suffers from impairments due to phase noises, amplifier-amplitude non-linearity and in phase and quadrature imbalance (IQI) [34][35][36], which significantly degrade the performance of wireless communication systems.…”

“…The authors of [26][27][28][29] proposed secure communication protocols for two-way relay networks. In [30][31][32][33], the end-to-end secrecy performance of multi-hop relaying systems is investigated.…”

Performance Comparison between Fountain Codes-Based Secure MIMO Protocols with and without Using Non-Orthogonal Multiple Access

“…However, because the source data can be overheard over multiple hops, the channel capacity obtained at the eavesdroppers can be significantly increased by using the MRC combiner [ 20 ]. To solve this problem, a randomize-and-forward strategy [ 20 , 21 ] is often employed by the transmitters including the source and the relays to confuse the eavesdroppers. In [ 22 ], a secure transmission protocol in a dual-hop MIMO relay system using TAS/MRC over Nakagami- m fading channels was proposed and analyzed.…”