On the performance analysis of dual hop relaying systems using differential <scp>amplify‐and‐forward</scp> along with <scp>post‐detection</scp> selection combining techniques over Nakagami‐m fading channels

Al-Mistarihi, Mamoun F.; Harb, Mariam M.; Darabkh, Khalid A.; Aqel, Arwa Sh.

doi:10.1002/ett.4065

Cited by 13 publications

(6 citation statements)

References 57 publications

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“…Outage performance for CR with full-duplex (FD) relaying had been analysed in [13], where the overall system performance was improved by implementing technical and efficient procedures such as optimal power allocation (OPA). The effect of choosing the location of the best relay and the general power allocation on the performance of CRN had been discussed in [16][17] where ergodic capacity was used to derive the desired results over Rayleigh fading channel. The authors were able to solve some of the critical problems concerning the two-way relaying cognitive network (TWR-CR) by applying the multiple input multiple output (MIMO) technique.…”

Section: Related Workmentioning

confidence: 99%

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Performance evaluation of cognitive relay networks for end user mobile over mixed realistic channels

2022

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Cognitive relay network is a spectrum dynamic paradigm that exploits the unused portions of the licensed spectrum. This is based on merging both cooperative relaying techniques and cognitive radio network to achieve spectrum efficiency and enhance the overall system performance. In this paper, the presence of mobile users at the destination node is considered. Here, the end users can navigate at relatively fast vehicular velocities causing dynamic multipath fading and high Doppler shift. which can be fairly modeled using Nakagami−𝑚 fading channel (i.e., 𝑚 < 1). In a spectrum scarcity environment, a secondary user must deploy an optimal power allocation policy to get higher transmission rates while the overall interference affecting the primary user (PU) is kept below a certain threshold value. In particular, the outage probability performance is studied over the mixed Rayleigh and Nakagami−𝑚 fading channels for different scenarios based on the statistical characteristics of signal-to-noise ratio. The first scenario is the cognitive dual hop amplify and forward relay network over independent and non-identical (i.n.i.d) distributed mixed fading channels. In the second scenario, the cognitive relay network consists of a single amplify and forward relay in addition to the direct link transmission with a selection combining at the destination over i.n.i.d distributed mixed fading channels. Numerical results are presented to evaluate the impact of the fading parameter, 𝑚, the maximum aggregated intrusion constraint, and the locations of the primary users (PUs) on different channel scenarios at high vehicular speeds.

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Section: Related Workmentioning

confidence: 99%

“…where all parameters are defined in (17) and (35). Now, the Υ r p,rd ,d 2 (𝛾) is a function of 𝛾 that is given by:…”

Section: The Outage Probability Analysismentioning

confidence: 99%

Performance evaluation of cognitive relay networks for end user mobile over mixed realistic channels

2022

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“…The results show that the system with multiple relays performs better than the one that has a single relay. Using post‐detection SC technique, the effectiveness of dual‐hop differential AF relay system was evaluated in References 1,28. Its BER and OP behavior was analyzed via Nakagami‐m fading channels and additive white Gaussian noise under various independent fading parameters.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of dual‐hop dual‐branch amplify‐and‐forward relaying cooperative diversity system using best‐path selection technique over Nakagami‐m fading channels

Aqel,

Al‐Mistarihi

2023

Trans Emerging Tel Tech

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One of the promising technologies for achieving virtual diversity gains is cooperative relaying. This study considers a dual‐hop dual‐branch cooperative diversity system with an amplify‐and‐forward mechanism where the hop count here means the total number of relays between source and destination which equals two. Utilizing the best‐path selection combining technique, a closed‐form formula for the average bit error rate and outage probability is obtained. Furthermore, between the nodes in the two branches, we consider independent non‐identical Nakagami‐m slow flat fading channels. The Monte Carlo simulation results are confirmed with the analytical ones.

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“…In addition, the performance of the relay channel has been evaluated widely in the literature. [8][9][10][11] A combination of the relay channel and the multiple-access channel (MAC) known as the multiple-access relay channel (MARC) was introduced by Kramer and Van Wijngaarden. 12 In the MARC the relay can help the transmitters to communicate with the destination.…”

Section: Introductionmentioning

confidence: 99%

Effects of relay and side information at one encoder on the coverage regions in Gaussian multiple‐access channel

Etminan

Mohanna

Hodtani

2021

Trans Emerging Tel Tech

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The two-user multiple-access relay channel (MARC) is investigated in the presence of side information (SI) available only at the informed transmitter in the present article. First, for the discrete alphabet and memoryless MARC with common and private messages, partial decode and forward strategy at the relay and fixed locations of the nodes, a general achievable rate region is obtained. The SI effect is seen and can be analyzed. Second, we extend the discrete result to a practical communications model: Gaussian multiple-access relay channel (GMARC), showing previous works as its special cases. Third, the effect of (perfect and nonperfect) SI on the maximum coverage region of GMARC for a fixed rate of the transmitters and a fixed distance between relay and destination is analyzed. It is shown that the SI increases the coverage region of encoders, and consequently, it can improve communication energy efficiency. Finally, mathematical findings are validated numerically by using Matlab.

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On the performance analysis of dual hop relaying systems using differential amplify‐and‐forward along with post‐detection selection combining techniques over Nakagami‐m fading channels

Cited by 13 publications

References 57 publications

Performance evaluation of cognitive relay networks for end user mobile over mixed realistic channels

Performance evaluation of cognitive relay networks for end user mobile over mixed realistic channels

Performance analysis of dual‐hop dual‐branch amplify‐and‐forward relaying cooperative diversity system using best‐path selection technique over Nakagami‐m fading channels

Effects of relay and side information at one encoder on the coverage regions in Gaussian multiple‐access channel

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