scholarly journals Static Hybrid Multihop Relaying

2021 ◽  
Vol 15 ◽  
pp. 48-52
Author(s):  
Sami Touati ◽  
Hatem Boujemaa
Keyword(s):  
Decode And Forward ◽  
Multihop Relaying ◽  
Simulation Results ◽  
Error Probabilities ◽  
Hybrid Relaying

In this work, we propose a new static hybrid mul- tihop relaying protocol where some relays amplify the received signal whereas the remaining ones use Decode and Forward (DF) relaying. The relaying mode in each relay is set using the distance between the different nodes or the average SNR. The exact and asymptotic bit error probabilities are derived. Simulation results are provided in different contexts to compare the performance of hybrid relaying to conventional AF and DF relaying.

A New Upper Bound on the Error Probability of Binary Linear Codes

2011 ◽  
Vol 403-408 ◽  
pp. 2852-2855
Author(s):  
Jun Guo ◽  
Li Yun Dai ◽  
Hong Wen Yang
Keyword(s):  
Performance Evaluation ◽  
Maximum Likelihood ◽  
Upper Bound ◽  
Error Probability ◽  
Linear Codes ◽  
Binary Linear Codes ◽  
Union Bound ◽  
Simulation Results ◽  
Error Probabilities

Performance evaluation of maximum-likelihood (ML) decoded binary linear codes is usually carried out using bounding techniques. In this paper, a new upper bound is presented to improve existing union bounds. The proposed upper bounding is based on probabilities of correct events, while the traditional union bound (UB) is on pair-wise error probabilities. Moreover, the improved upper bounding uses the intersection instead of the union of basic events. The theoretical and simulation results show that the proposed bound is tight than UB.

scholarly journals Joint TAS and Power Allocation for SDF Relaying M2M Cooperative Networks

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Lingwei Xu ◽  
Hao Zhang ◽  
Jingjing Wang
Keyword(s):  
Power Allocation ◽  
Fading Channels ◽  
Performance Optimization ◽  
Antenna Selection ◽  
Cooperative Networks ◽  
Transmit Antenna Selection ◽  
Decode And Forward ◽  
Simulation Results ◽  
Nakagami Fading Channels ◽  
Multiple Relay

The outage probability (OP) performance of multiple-relay-based selective decode-and-forward (SDF) relaying mobile-to-mobile (M2M) networks with transmit antenna selection (TAS) overN-Nakagami fading channels is investigated. The exact closed-form expressions for OP of the optimal and suboptimal TAS schemes are derived. The power allocation problem is formulated for performance optimization. Then, the OP performance under different conditions is evaluated through numerical simulations to verify the analysis. The simulation results showed that optimal TAS scheme has a better OP performance than suboptimal TAS scheme. Further, the power allocation parameter has an important influence on the OP performance.

scholarly journals Half-duplex power beacon-assisted energy harvesting relaying networks: system performance analysis

2019 ◽  
Vol 9 (5) ◽  
pp. 3399
Author(s):  
Tan N. Nguyen ◽  
Minh Tran ◽  
Van-Duc Phan ◽  
Hoang-Nam Nguyen ◽  
Thanh-Long Nguyen
Keyword(s):  
Energy Harvesting ◽  
System Performance ◽  
System Throughput ◽  
Primary System ◽  
Amplify And Forward ◽  
Decode And Forward ◽  
System Parameters ◽  
Half Duplex ◽  
Simulation Results ◽  
Analytical Expressions

<p>In this work, the half-duplex (HF) power beacon-assisted (PB) energy harvesting (EH) relaying network, which consists of a source (S), Relay (R), destination (D) and a power beacon (PB) are introduced and investigated. Firstly, the analytical expressions of the system performance in term of outage probability (OP) and the system throughput (ST) are analyzed and derived in both amplify-and-forward (AF) and decode-and-forward (DF) modes. After that, we verify the correctness of the analytical analysis by using Monte-Carlo simulation in connection with the primary system parameters. From the numerical results, we can see that all the analytical and the simulation results are matched well with each other.</p>

scholarly journals Pairwise Error Probability Performance of SM-MIMO and Spatially Modulated Cooperative Communication Employing SDF Protocol

2019 ◽  
Vol 8 (6) ◽  
pp. 4755-4761
Keyword(s):  
Power Allocation ◽  
Error Probability ◽  
Mimo System ◽  
Optimal Detection ◽  
Optimal Power Allocation ◽  
Cooperative System ◽  
Decode And Forward ◽  
Pairwise Error Probability ◽  
Optimal Power ◽  
Simulation Results

In this paper, we analyze the performance of spatially modulated (SM) multiple input multiple output (MIMO) system and spatially modulated MIMO cooperative system with multiple relays employing selective decode and forward (SDF) protocol. Here the analysis is done for pre-determined orthogonal channel for SM MIMO and SM MIMO cooperative system using M-PSK modulation and ML detection. Firstly Pairwise error probability (PEP) expression is derived and optimal, sub-optimal detection is done in a spatially modulated MIMO system. Further, the analysis of SDF spatially modulated MIMO cooperative system is extended to single relay and multiple relay configurations. PEP expression is also derived for SDF spatially modulated MIMO cooperative system. Simulation results for the SM MIMO system show optimal detection performs better than suboptimal detection and system performance improves as the number of antenna increases. The simulation results of PEP analysis in the SM MIMO cooperative system include the theoretical PEP, exact PEP and asymptotic PEP and Optimal power allocation (OPA) is also derived for the same. Optimal power allocation for theoretical PEP, exact PEP and asymptotic PEP outperforms the same at equal power allocation

scholarly journals Performance Analysis in the Decode-and-Forward Full-Duplex Relaying Network with SWIPT

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Phu Tran Tin ◽  
Phan Van-Duc ◽  
Tan N. Nguyen ◽  
Le Anh Vu
Keyword(s):  
Performance Analysis ◽  
Mathematical Analysis ◽  
Relay Node ◽  
Cooperative Relaying ◽  
Full Duplex ◽  
Selection Combining ◽  
Decode And Forward ◽  
Simulation Results ◽  
Rf Signal ◽  
Relaying System

This paper investigates the decode-and-forward (DF) full-duplex (FD) cooperative relaying system with SWIPT. Specifically, the relay node can harvest energy from the source’s RF signal, and then the harvested energy is used for transferring information to the destination. Besides, we consider both direct and two-hop relaying links to transmit data from the source to the destination. In the performance analysis, we derive the exact expressions for outage probability (OP) by applying the receiver’s selection combining (SC) technique. Then, the Monte Carlo simulation is performed to verify the correctness of the mathematical analysis. Finally, the simulations show that the mathematic expressions match simulation results, which authenticates the mathematical analysis.

scholarly journals Performance analysis of the clustering-based multihop wireless energy harvesting sensor networks over symmetric and asymmetric fading channels

2017 ◽  
Vol 13 (2) ◽  
pp. 155014771769384 ◽  
Author(s):  
Vikash Singh ◽  
Hideki Ochiai
Keyword(s):  
Energy Harvesting ◽  
Fading Channels ◽  
Relay Selection ◽  
Transmission Rate ◽  
Rician Fading ◽  
Power Splitting ◽  
Decode And Forward ◽  
Selection Scheme ◽  
Multihop Relaying ◽  
Partial Relay Selection

In this work, we propose a clustering-based multihop relaying with the partial relay selection scheme for an energy harvesting relaying network and analyze the performance in the framework of the decode-and-forward relaying and adaptive power splitting protocol over symmetric and asymmetric fading channel models. In particular, we analyze the system performance in terms of the outage probability, effective transmission rate, and throughput. Through extensive numerical analysis, we show that the proposed scheme can substantially outperform the conventional multihop relaying without clustering as well as direct transmission, which suggests that the proposed scheme can be used to extend the network coverage without any extra energy from the network. We also demonstrate that the proposed scheme can compensate for the performance loss due to poor radio frequency to DC conversion efficiency as well as path loss by exploiting the gain associated with multihop relaying as well as the diversity gain achieved through the partial relay selection scheme. Moreover, we investigate the relationship between the total number of relay nodes in the network and the number of hops and show that there is an optimal number of hops that can maximize the throughput for a given transmission power of the source. The effect of the asymmetric channels in our clustering-based multihop relaying is also investigated and it is revealed that the existence of Rician fading will help improve the throughput at the destination side, rather than the source side, as opposed to the conventional multihop relaying scenarios without clustering.

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