Closed-Form Expression for BER in Relay-Based DF Cooperative Diversity Systems Over Nakagami-m Fading Channels with Non-identical Interferers

Al-Mistarihi, Mamoun F.; Mohaisen, Rami; Darabkh, Khalid A.

doi:10.1007/978-3-030-30859-9_61

Cited by 14 publications

(7 citation statements)

References 20 publications

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“…Now, if r x has a Rayleigh distributed with E [r x 2 ] = Ω∕m . If r z and r x are satisfying the relationship in (10), then r y has a nonnegative standard Beta distribution with parameters m and m − 1 independent of r x , which is given by [51]:…”

Section: Performance Analysismentioning

confidence: 99%

“…More specifically, all these impairments can affect the performance of the wireless link and make it unreliable for transmission. Therefore, diversity techniques had been proposed to alleviate the effect of multipath fading and hence improve the overall performance of the communication system [5][6][7][8][9][10]. This is based on providing multiple fading channels between the transmitter and receiver to reduce the probability of error.…”

Section: Introductionmentioning

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: Performance Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

2022

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“…The relay decodes the signal and discards the noise from the original signal in the DF technique. After that, the message is encoded and forwarded to the destination [33][34][35][36]. On the contrary, in the AF technique, the relay forwards the signal to the destination after the amplification process.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Dual-Hop AF Cognitive Relay Networks with Best Selection and Interference Constraints

2022

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In this paper, a dual-hop underlay cognitive relay network (CRN) with a best-relay selection (BRS) scheme under spectrum-sharing constraints from the primary user (PU) is investigated. The system model in this work consists of one PU, one secondary user (SU) and a few SU relays. Both users exchange the information using a half-duplex mode through amplify-and-forward (AF) SU relays. Moreover, all channels are modelled using the Nakagami-m fading model. In this work, the outage probabilities (OPs) are derived for the proposed system model under several scenarios to investigate the network performance under interference power constraint Ip at the PU receiver. In addition, the impacts of the number of relays and the channel fading severity parameters are investigated as well. Furthermore, the system performance is investigated for several PU locations. The various numerical results are verified using a Monte Carlo simulation. Overall, the obtained results show that several factors such as the number of relays, channel fading severity parameters and PU location have a major impact on the outage performance of the SU. The simulation and analytical results are perfectly matched, confirming the accuracy of the analytical derivations.

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“…It is catching the attention that the AF, 17‐19 Decode‐and‐forward (DF), 20‐24 and Compress‐and‐Forward (CF) are the most widely used cooperative relaying protocols. The simplest relaying protocol is AF.…”

Section: Introductionmentioning

confidence: 99%

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

Al-Mistarihi

Harb

Darabkh

et al. 2020

Trans Emerging Tel Tech

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The proposed work analyzes the performance of dual‐hop relaying systems by means of the differential amplify‐and‐forward relaying method. The post‐detection selection combining reception scheme proposed in this article allows receivers to approximate existing fading gain in a branch by using previously received samples to achieve a cooperative diversity at cases that exclude the need of having explicit channel estimation. Assuming independent fading channels, tight closed‐form expressions for the system bit error rate and outage probability are ultimately derived considering Nakagami‐m fading channels and additive white Gaussian noise. Different fading parameters were used to plot simulation results.

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Closed-Form Expression for BER in Relay-Based DF Cooperative Diversity Systems Over Nakagami-m Fading Channels with Non-identical Interferers

Cited by 14 publications

References 20 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 AF Cognitive Relay Networks with Best Selection and Interference Constraints

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

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