Papers by Tran Minh Duy (FPL HCM_K17)
Journal of electromagnetic engineering and science, 2012
In this paper, we evaluate performances of dual-hop decode-and-forward relaying systems with the ... more In this paper, we evaluate performances of dual-hop decode-and-forward relaying systems with the N th best-relay selection scheme. In some schemes, such as scheduling or load balancing schemes, the best relay is unavailable and hence the system must resort the second best, third best, or generally the N th best relay. We derive the expressions of the outage probability and symbol error rate (SER) for this scenario over Rayleigh fading channels. Monte-Carlo simulations are presented to verify the analytical results.
Journal of electromagnetic engineering and science, 2012
In this paper, we propose a novel protocol called a Multi-hop Diversity Transmission protocol in ... more In this paper, we propose a novel protocol called a Multi-hop Diversity Transmission protocol in which the retransmission is realized by a relay that is Nearest to a current Source (MDTNS). We derive the mathematical expressions of the packet error rate (PER) and the average number of transmissions over Nakagami-m fading channels, and verify them by Monte Carlo simulations. The simulation results show that the MDTNS protocol improves the performance of the network in terms of PER when compared to the Multi-hop Diversity Transmission protocol in which the retransmission is done by a relay that is Nearest to Destination (MDTND) and to the conventional multi-hop transmission (CMT) protocol.
Journal of electromagnetic engineering and science, 2012
In this paper, we propose a novel cooperative routing protocol (NCRP) for wireless networks. The ... more In this paper, we propose a novel cooperative routing protocol (NCRP) for wireless networks. The proposed protocol uses cooperative transmission to improve end-to-end outage probability. The broadcast nature ensures that the destination can receive a packet from the source or from the relays and if it cannot correctly decode the packet, the successful relays will start a retransmission. The NCRP protocol can skip some transmissions from the intermediate relays, thereby reducing the total power consumption. Theoretical results are derived and verified by simulation results.
Effect of Train Speed on Vibrations of Pile-Supported Embankments
Journal of Society For Transportation and Traffic Studies, Dec 31, 2013
In this paper, a number of 3D-FEM simulations for train speed ranging from 36 km/h to 432 km/h ar... more In this paper, a number of 3D-FEM simulations for train speed ranging from 36 km/h to 432 km/h are performed to investigate the effect of train speed on the vibration of pile-supported embankments. Study attention is placed on the phenomenon of vibrational resonance and the concept of critical train speed.
Secrecy performance analysis with relay selection methods under impact of co‐channel interference
IET Communications, 2015
In this study, the authors evaluate secrecy performance of cooperative protocols with relay selec... more In this study, the authors evaluate secrecy performance of cooperative protocols with relay selection methods under impact of co-channel interference. In particular, the authors propose an optimal selection scheme to maximise the secrecy capacity obtained at the cooperative phase. In addition, the authors also consider suboptimal and random selection schemes which reduce the complexity of implementation, when compared with the optimal one. For performance evaluation, the authors derive exact and asymptotic closed-form expressions of secrecy outage probability and probability of non-zero secrecy capacity for the considered schemes over Rayleigh fading channels. Monte Carlo simulations are performed to validate the derivations.
9th International Conference on Communications and Networking in China, 2014
Cognitive radio (CR) with spectrum-sharing has been envisioned as emerging technology for the nex... more Cognitive radio (CR) with spectrum-sharing has been envisioned as emerging technology for the next generation of mobile and wireless networks by allowing the unlicensed customers simultaneously utilize the licensed radio frequency spectrums. However, the CR has faced some practical challenges due to its deduced system performance as compared to non spectrum-sharing counterpart. In this paper, we therefore consider the potential of incorporating the cooperative communications into CR by introducing the concept of reactive multiple decode-and-forward (DF) relays. In particular, we derive new results for exact and asymptotic expressions for the performance of cognitive relay networks with Kth best relay selection. Our novel results have exhibited the significance of using relay networks to enhance the system performance of CR.
Secrecy Outage Probability of Dual-hop Network in Presence of Co-channel Interference
Relay Selection for Secured Communication in Interference-limited Networks
Outage Performance with Selection Decode and Forward in Cognitive Radio with Imperfect CSI
Secured communication in cognitive MIMO schemes under hardware impairments
2014 International Conference on Advanced Technologies for Communications (ATC 2014), 2014
In this paper, the impact of hardware impairments on secrecy performance of cognitive MIMO scheme... more In this paper, the impact of hardware impairments on secrecy performance of cognitive MIMO schemes is investigated. In addition, the relay which helps the source forward the source signal to the destination can operate either half-duplex mode or full-duplex mode. For performance evaluation, we give the expressions of average secrecy rate over Rayleigh fading channel. Monte-Carlo simulations are presented to compare and optimize the performance of the proposed schemes.
Secrecy outage performance of relay networks under interference constraint
2014 International Conference on Advanced Technologies for Communications (ATC 2014), 2014
In this paper, we study secrecy outage performance of dual-hop relay protocols in underlay cognit... more In this paper, we study secrecy outage performance of dual-hop relay protocols in underlay cognitive radio network. In particular, we derive exact and asymptotic closed-form expressions of secrecy outage probability for randomize-and-forward and decode-and-forward schemes over Rayleigh fading channel. The derivations are then verified by Monte Carlo simulations.
On performance evaluation of hybrid decode-amplify-forward relaying protocol with partial relay selection in underlay cognitive networks
Journal of Communications and Networks, 2014
ABSTRACT In this paper, we evaluate performance of a hybrid decode-amplify-forward relaying proto... more ABSTRACT In this paper, we evaluate performance of a hybrid decode-amplify-forward relaying protocol in underlay cognitive radio. In the proposed protocol, a secondary relay which is chosen by partial relay selection method helps a transmission between a secondary source and a secondary destination. In particular, if the chosen relay decodes the secondary source's signal successfully, it will forward the decoded signal to the secondary destination. Otherwise, it will amplify the signal received from the secondary source and will forward the amplified signal to the secondary destination. We evaluate the performance of our scheme via theory and simulation. Results show that the proposed protocol outperforms the amplify-and-forward and decode-and-forward protocols in terms of outage probability.
Secured cooperative cognitive radio networks with relay selection
2014 IEEE Global Communications Conference, 2014
In this paper, we propose physical layer security for cooperative cognitive radio networks (CCRNs... more In this paper, we propose physical layer security for cooperative cognitive radio networks (CCRNs) with relay selection in the presence of multiple primary users and multiple eavesdroppers. To be specific, we propose three relay selection schemes, namely, opportunistic relay selection (ORS), suboptimal relay selection (SoRS), and partial relay selection (PRS) for secured CCRNs, which are based on the availability of channel state information (CSI) at the receivers. For each approach, we derive exact and asymptotic expressions for the secrecy outage probability. Results show that under the assumption of perfect CSI, ORS outperforms both SoRS and PRS.
Wireless Personal Communications, 2015
In this paper, we investigate the secured transmission in cluster-based multi-hop networks. In pa... more In this paper, we investigate the secured transmission in cluster-based multi-hop networks. In particular, we evaluate the secrecy performance of three various protocols over Rayleigh fading channel. In the first protocol, at each cluster, a relay is randomly selected to forward the source message to the next cluster. In the second and third ones, relay selection methods are applied to enhance secrecy performance. We derive closed-form expressions of secrecy outage probability and capacity, and then perform Monte Carlo simulations to verify the derivations.
2013 IEEE Global Communications Conference (GLOBECOM), 2013
Previous works on cognitive relay networks (CRNs) considered only symmetric fading channels. Howe... more Previous works on cognitive relay networks (CRNs) considered only symmetric fading channels. However, in practical wireless propagation scenarios, it is likely that the channels of the secondary user (SU) and primary user (PU) may undergo different fading characteristics. In this paper, we assume that the channels of the secondary network (SU-source→SU-relay→SUdestination) are subject to Rician fading, whereas the channels of the link from the SU to the PU experience Rayleigh fading. Based on this framework, the end-to-end outage probability (OP) of CRNs is investigated for two different relaying schemes: i) in the absence of the direct link with decode-and-forward (DF) protocol and ii) in the presence of the direct link with incremental DF protocol. In particular, we derive both exact and asymptotic OP expressions for the considered CRNs. Our analysis reveals important insights into the impact of fading parameters on the CRN performance under distinct fading distributions.
A skipped-hop transmission protocol using cooperative communication
2012 26th Biennial Symposium on Communications (QBSC), 2012
In this paper, we propose a novel cooperative multi-hop transmission protocol (NCMT). In the prop... more In this paper, we propose a novel cooperative multi-hop transmission protocol (NCMT). In the proposed protocol, cooperative communication is used to decrease the end-to-end outage probability and reduce the number of transmissions due to the skipped hops. The performances are evaluated via theoretical analyses and Monte Carlo simulations.
Performance analysis of cooperative multi-hop transmission protocols
2010 International Conference on Information and Communication Technology Convergence (ICTC), 2010
In this paper, we propose and evaluate the performance of two cooperative multi-hop transmission ... more In this paper, we propose and evaluate the performance of two cooperative multi-hop transmission protocols. We derive expressions of packet error rate (PER) and average number of transmissions for the proposed protocols. The Monte-Carlo simulations are presented to verify the theoretical analyses.
IEEE Transactions on Communications, 2015
In this paper, we investigate the end-to-end performance of dual-hop proactive decode-and-forward... more In this paper, we investigate the end-to-end performance of dual-hop proactive decode-and-forward relaying networks with N th best relay selection in the presence of two practical deleterious effects: i) hardware impairment and ii) cochannel interference. In particular, we derive new exact and asymptotic closed-form expressions for the outage probability and average channel capacity of N th best partial and opportunistic relay selection schemes over Rayleigh fading channels. Insightful discussions are provided. It is shown that, when the system cannot select the best relay for cooperation, the partial relay selection scheme outperforms the opportunistic method under the impact of the same co-channel interference (CCI). In addition, without CCI but under the effect of hardware impairment, it is shown that both selection strategies have the same asymptotic channel capacity. Monte Carlo simulations are presented to corroborate our analysis.
Cognitive multihop cluster-based transmission under interference constraint
The 18th IEEE International Symposium on Consumer Electronics (ISCE 2014), 2014
In this paper, we study multi-hop cluster-based transmission in underlay cognitive network. For p... more In this paper, we study multi-hop cluster-based transmission in underlay cognitive network. For performance evaluation, we derive exact and approximate expressions of end-to-end outage probability over Rayleigh fading channels. Monte-Carlo simulations are performed to verify our derivations.
Multi-hop transmission with diversity combining techniques under interference constraint
2013 International Conference on Advanced Technologies for Communications (ATC 2013), 2013
ABSTRACT In this paper, we study performance of multi-hop cooperative transmission protocols in u... more ABSTRACT In this paper, we study performance of multi-hop cooperative transmission protocols in underlay cognitive radio networks. In the considered protocols, secondary relays and secondary destination employ combining techniques such as selection combining (SC) and maximal ratio combining (MRC) to combine the packets received from the secondary source and previous secondary relays. We derive asymptotic closed-form expressions of outage probability over Rayleigh fading channel. Monte Carlo simulations are presented to verify the derivations.
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Papers by Tran Minh Duy (FPL HCM_K17)