Nouha Dahi - Academia.edu (original) (raw)
Papers by Nouha Dahi
2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2017
This paper addresses accurate outage performances of a two-way relaying network with wireless pow... more This paper addresses accurate outage performances of a two-way relaying network with wireless power transfer. The wireless power transfer or energy harvesting is a well known scheme for reducing energy consumption of low power devices by harvesting energy received from high power equipments. In this work sources are considered high power equipments and relays are the low power devices. In this context, the signal to noise and power gain are obtained and used to accurately derive outage probability (OP) for a two-way relaying system in amplify-and-forward conguration, with energy harvesting at relays. The impact of energy harvesting period is shown for low-rate and high-rate regimes. This enabled the OP to join asymptotically a zero bound.
2020 International Wireless Communications and Mobile Computing (IWCMC), 2020
In this paper, we consider a wireless-powered cooperative communication network (WPCCN) consistin... more In this paper, we consider a wireless-powered cooperative communication network (WPCCN) consisting of one access point (A), one Power Beacon (B), one source and one relay. In contrast to conventional cooperative networks, the source and relay in the considered network have no embedded energy supply. They need to rely on the energy harvested from B for their cooperative information transmission. We adopt a harvest-then-cooperate protocol in an urban environment, where the source and relay harvest energy from the signals broadcasted by B in the downlink and work cooperatively in the uplink for the sources information transmission. Non-orthogonal multiple access (NOMA) technique is applied in the extension for two-user scenario. Outage probability is explored in low and high signal to noise ratio (SNR) regimes. The impact of the distance between the nodes are extensively investigated.
2018 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2018
This paper investigates direct and relay assisted transmission (DRAT) network model with non-orth... more This paper investigates direct and relay assisted transmission (DRAT) network model with non-orthogonal multiple access (NOMA) with simultaneous wireless information and power transfer (SWIFT). A line of sight is considered between the base station (BS) and a close use, while a dedicated decode-and-forward (DF) relay ensures the communication with a far user with bad channel quality using collected energy. Outage probability is explored in low and high signal to noise ratio (SNR) regime. The impact of power allocation is also shown with simulation results in order to improve system self-sustainability.
2018 14th International Wireless Communications & Mobile Computing Conference (IWCMC), 2018
Non-orthogonal multiple access (NOMA) technique in cooperative system with energy harvesting is i... more Non-orthogonal multiple access (NOMA) technique in cooperative system with energy harvesting is investigated. A decode-and-forward (DF) relay is used to send messages from the base station (BS) to users. Following the time-switching technique, the relay uses a portion of transmission period to collect energy from BS then deliver information to users. System performances are explored in terms of signal-to-noise and outage probability. Simulation results validate the proposed theorem, and show the impact of the combination of these techniques to improve system self-sustainability.
2018 Seventh International Conference on Communications and Networking (ComNet), 2018
This paper investigates cooperative non-orthogonal multiple access (NOMA) with energy harvesting ... more This paper investigates cooperative non-orthogonal multiple access (NOMA) with energy harvesting (EH) radio networks. This promising technology is the key to address an important issue of next-generation wireless communication Systems.EH is a well known technique for reducing energy consumption of battery-limited devices by collecting energy received from high power equipments. Closed-form expression of outage probability is derived at relay assisted transmission scheme with Nakagami-m fading channels.Simulation results validate the proposed theorem. We consider the impact of time splitting fraction on system maintainability.
Journal of Communications Software and Systems, 2018
This paper investigates cooperative non-orthogonal multiple access (NOMA) with simultaneous wirel... more This paper investigates cooperative non-orthogonal multiple access (NOMA) with simultaneous wireless information and power transfer (SWIPT) radio networks. A decode-andforward relay deserves a base station to transmit information to two users. Two access schemes are addressed: direct and relay assisted transmission (DRAT) where a line-of-sight exists between the source and destination, and non-direct and relay assisted transmission (nDRAT) where the only access to the final users is through the relay. New closed-form expressions of outage probability are derived at these schemes. A generalization using Nakagami-m fading channels in considered, in order to present a complete cover of relayed NOMA systems with energy harvesting behavior in small scale fading. We consider the impact of time splitting fraction, power allocation and channel parameters on system maintainability and evaluate its maximum data rate transmission with full autonomy. By comparing the two schemes, cooperative NOMA with energy harvesting (EH) in nDRAT scenario outperforms transmission with direct link in terms of outage probability and transmission data rate. Index Terms-Nakagami-m fading,simultaneous wireless information and power transfer, decode-and-forward, non-orthogonal multiple access, energy harvesting, outage probability.
2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2017
This paper addresses accurate outage performances of a two-way relaying network with wireless pow... more This paper addresses accurate outage performances of a two-way relaying network with wireless power transfer. The wireless power transfer or energy harvesting is a well known scheme for reducing energy consumption of low power devices by harvesting energy received from high power equipments. In this work sources are considered high power equipments and relays are the low power devices. In this context, the signal to noise and power gain are obtained and used to accurately derive outage probability (OP) for a two-way relaying system in amplify-and-forward conguration, with energy harvesting at relays. The impact of energy harvesting period is shown for low-rate and high-rate regimes. This enabled the OP to join asymptotically a zero bound.
2020 International Wireless Communications and Mobile Computing (IWCMC), 2020
In this paper, we consider a wireless-powered cooperative communication network (WPCCN) consistin... more In this paper, we consider a wireless-powered cooperative communication network (WPCCN) consisting of one access point (A), one Power Beacon (B), one source and one relay. In contrast to conventional cooperative networks, the source and relay in the considered network have no embedded energy supply. They need to rely on the energy harvested from B for their cooperative information transmission. We adopt a harvest-then-cooperate protocol in an urban environment, where the source and relay harvest energy from the signals broadcasted by B in the downlink and work cooperatively in the uplink for the sources information transmission. Non-orthogonal multiple access (NOMA) technique is applied in the extension for two-user scenario. Outage probability is explored in low and high signal to noise ratio (SNR) regimes. The impact of the distance between the nodes are extensively investigated.
2018 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 2018
This paper investigates direct and relay assisted transmission (DRAT) network model with non-orth... more This paper investigates direct and relay assisted transmission (DRAT) network model with non-orthogonal multiple access (NOMA) with simultaneous wireless information and power transfer (SWIFT). A line of sight is considered between the base station (BS) and a close use, while a dedicated decode-and-forward (DF) relay ensures the communication with a far user with bad channel quality using collected energy. Outage probability is explored in low and high signal to noise ratio (SNR) regime. The impact of power allocation is also shown with simulation results in order to improve system self-sustainability.
2018 14th International Wireless Communications & Mobile Computing Conference (IWCMC), 2018
Non-orthogonal multiple access (NOMA) technique in cooperative system with energy harvesting is i... more Non-orthogonal multiple access (NOMA) technique in cooperative system with energy harvesting is investigated. A decode-and-forward (DF) relay is used to send messages from the base station (BS) to users. Following the time-switching technique, the relay uses a portion of transmission period to collect energy from BS then deliver information to users. System performances are explored in terms of signal-to-noise and outage probability. Simulation results validate the proposed theorem, and show the impact of the combination of these techniques to improve system self-sustainability.
2018 Seventh International Conference on Communications and Networking (ComNet), 2018
This paper investigates cooperative non-orthogonal multiple access (NOMA) with energy harvesting ... more This paper investigates cooperative non-orthogonal multiple access (NOMA) with energy harvesting (EH) radio networks. This promising technology is the key to address an important issue of next-generation wireless communication Systems.EH is a well known technique for reducing energy consumption of battery-limited devices by collecting energy received from high power equipments. Closed-form expression of outage probability is derived at relay assisted transmission scheme with Nakagami-m fading channels.Simulation results validate the proposed theorem. We consider the impact of time splitting fraction on system maintainability.
Journal of Communications Software and Systems, 2018
This paper investigates cooperative non-orthogonal multiple access (NOMA) with simultaneous wirel... more This paper investigates cooperative non-orthogonal multiple access (NOMA) with simultaneous wireless information and power transfer (SWIPT) radio networks. A decode-andforward relay deserves a base station to transmit information to two users. Two access schemes are addressed: direct and relay assisted transmission (DRAT) where a line-of-sight exists between the source and destination, and non-direct and relay assisted transmission (nDRAT) where the only access to the final users is through the relay. New closed-form expressions of outage probability are derived at these schemes. A generalization using Nakagami-m fading channels in considered, in order to present a complete cover of relayed NOMA systems with energy harvesting behavior in small scale fading. We consider the impact of time splitting fraction, power allocation and channel parameters on system maintainability and evaluate its maximum data rate transmission with full autonomy. By comparing the two schemes, cooperative NOMA with energy harvesting (EH) in nDRAT scenario outperforms transmission with direct link in terms of outage probability and transmission data rate. Index Terms-Nakagami-m fading,simultaneous wireless information and power transfer, decode-and-forward, non-orthogonal multiple access, energy harvesting, outage probability.