Security-Reliability Trade-Off Analysis for Rateless Codes-Based Relaying Protocols Using NOMA, Cooperative Jamming and Partial Relay Selection

Abstract

In this paper, we propose secure relaying transmission protocols using rateless codes, where a source sends encoded packets to two intended destinations via help of intermediate relays. Employing nonorthogonal multiple access, two encoded packets can be sent to the destinations at the same time. In addition, two partial relay selection methods are studied to enhance reliability of the data transmission at the first and second hops. For protecting the source-relay and relay-destination transmission against an eavesdropper, cooperative jamming technique is employed. Particularly, in the first phase of each data transmission cycle, the remaining relays (except the selected relay) are used to transmit artificial noise on the eavesdropper, and cooperate with the selected relay to cancel interference components. In the second phase, trusted nodes that are near the destinations are employed to play a role as the cooperative jammers. For a fair performance comparison, we design a simple transmit power allocation for the transmitter and jammer nodes at the first and second phases. We also propose an adaptive power allocation method, where fractions of the transmit power are appropriately allocated to the signals, relying on instantaneous channel gains between the selected relay and the destinations. This paper also derives exact closed-form formulas of outage probability and intercept probability over Rayleigh fading channel. All the performance analysis is then validated by Monte-Carlo simulations. The obtained results clearly show a trade-off between security and reliability that can be enhanced by optimally designing the system parameters.

Throughput analysis of power beacon-aided multi-hop MIMO relaying networks employing NOMA and TAS/SC

“…Section 4 performs Matlab-based Monte-Carlo simulations [24], [25] to validate the derived fomulas of TP NOMA and TP OMA . We place the source (𝑇 0 ) and the relays (𝑇 𝑘 ) at positions(𝑘/𝐾, 0), where 𝑘 = 0,1, .…”

Optimal Element Allocation for RIS-Aided Physical Layer Security

“…Since the PLS takes advantage of the natural peculiarities and physical properties of propagation environment to promote the security performance of 5G communication network and secure the data transmission, it has attracted extensive attention in the academia and industry circles [7]. Several dimensions of designing PLS schemes have been identified in the literature, via nonorthogonal multiple access (NOMA) [8], artificial noise (AN), and cooperative interference [9]. Although effective, they may consume extra power and/or incur additional hardware cost, thus forming significant barriers in the real implementations.…”

Performance Evaluation Of Multi-Hop Relaying IoTs Networks Using Hop-By-Hop Cooperative Transmission Under Impact of Co-channel Interference

“…Cooperative communication and relaying techniques [1]- [5] are widely used in self-organized networks (such as IoTs networks) to enhance performance. So far, the cooperative relaying has been applied into various developed wireless networks such as secure communication at physical layer [6], wirelessly EH (energy harvesting) [7], NOMA (Non-Orthogonal Multiple Access) [8], IRS (Intelligent Reflecting Surface) [9], underlay spectrum sharing cognitive radio [10], etc. Different with the conventional relaying technique, a destination node using cooperative communication can exploit the direct link for obtaining higher diversity order [11].…”