An Adaptive Cooperation Diversity Scheme With Best-Relay Selection in Cognitive Radio Networks

Zou, Yulong; Zhu, Jia; Zheng, Baoyu; Yao, Yu-Dong

doi:10.1109/tsp.2010.2053708

Cited by 331 publications

(247 citation statements)

References 19 publications

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“…The optimal relay selection requires the global CSI for both main and wire-tap links. Therefore, the proposed relay of DF relaying based on optimal relay selection can be obtained from (22) as follows:…”

Section: Proposed Relay Selection Mechanismmentioning

confidence: 99%

A Novel Approach to Enhance the Physical Layer Channel Security of Wireless Cooperative Vehicular Communication Using Decode‐and‐Forward Best Relaying Selection

Ghourab

Azab

Feteiha

et al. 2018

Wireless Communications and Mobile Computing

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This paper proposes a novel approach to enhance wireless vehicle-to-vehicle channel-secrecy capacity by imposing signal transmission diversity. This work exploits cooperative vehicular relaying to extract the associated underlying multipath and Doppler diversity using precoding techniques. We evaluated the capacity and diversity gain for the presented approach to ensure its effectiveness and efficiency. The abundance of moving vehicles, operating in an ad hoc fashion, can eliminate the need to establish a dedicated relaying infrastructure. A relay selection scheme is deployed, taking advantage of the potentially large number of available relaying vehicles. Further, we derivate a closed-form mathematical expression for the channel-secrecy capacity, diversity order gain, and the intercept probability. We used the direct transmission scenario as a reference to assess our analysis. Our analytical and simulation results for the presented model showed that channel-secrecy capacity and performance-indicators improved significantly.

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Section: Proposed Relay Selection Mechanismmentioning

confidence: 99%

A Novel Approach to Enhance the Physical Layer Channel Security of Wireless Cooperative Vehicular Communication Using Decode‐and‐Forward Best Relaying Selection

Ghourab

Azab

Feteiha

et al. 2018

Wireless Communications and Mobile Computing

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“…For simplicity, we consider PT-PR links are identically distributed, i.e., λ pp i = λ pp ; interference channels from PTs to a node and vice-versa are also identically distributed, i.e., λ pir = λ pr , λ pid = λ pd , λ sp i = λ sp , and λ rp i = λ rp . We assume the knowledge of mean channel power gains for PT i -PD i , ST-PD i , and SR-PD i links, while SR and SD have the knowledge of instantaneous channels gains for the respective receiving links, i.e., for ST-SR and PT i -SR links at SR and for SR-SD and PT i -SD links at SD, as in [25], [26].…”

Section: System and Channel Modelsmentioning

confidence: 99%

Interference-Assisted Wireless Energy Harvesting in Cognitive Relay Network with Multiple Primary Transceivers

Kalamkar

Banerjee

2015

2015 IEEE Global Communications Conference (GLOBECOM)

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Abstract-We consider a spectrum sharing scenario, where a secondary network coexists with a primary network of multiple transceivers. The secondary network consists of an energyconstrained decode-and-forward secondary relay which assists the communication between a secondary transmitter and a destination in the presence of the interference from multiple primary transmitters. The secondary relay harvests energy from the received radiofrequency signals, which include the information signal from the secondary transmitter and the primary interference. The harvested energy is then used to decode the secondary information and forward it to the secondary destination. At the relay, we adopt a time switching policy due to its simplicity that switches between the energy harvesting and information decoding over time. Specifically, we derive a closed-form expression for the secondary outage probability under the primary outage constraint and the peak power constraint at both secondary transmitter and relay. In addition, we investigate the effect of the number of primary transceivers on the optimal energy harvesting duration that minimizes the secondary outage probability. By utilizing the primary interference as a useful energy source in the energy harvesting phase, the secondary network achieves a better outage performance.

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“…In addition to this inter-and intra-cell interference level also reduces, leading to the higher capacity gain. Depending upon the nature and complexity, relay protocols can be regenerative and non-regenerative [24,25]. Assuming that all the cascaded relays between (PU-S) and (PU-D) share the same licensed frequency with bandwidth B.…”

Section: System Modelmentioning

confidence: 99%

Efficient Performance Analysis of Spectrum Sensing for Cascaded Multihop Network over Nagakami-m Fading Channels

Kakkar¹,

Khosla²,

Uddin³

2014

ENG

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Performance evaluation of spectrum sensing in infrastructure based multihop network is very hard to achieve because of the adverse effects of channel fading. In this paper, performance of a multihop link is studied over Nakagami-m distribution. It provides the exact theoretical methodology for the performance analysis of spectrum sensing by evaluating detection probability. Using a cascaded multihop model, the end-to-end Signal to Noise Ratio (SNR) is given over Nakagami-m distribution. In the analysis, multihop model based on relays are considered over independent and not identically distributed (i.n.i.d) wireless channels. Simulation results show the effect of increase in number of hops on probability of detection for multihop links. Subsequent to the thorough fading severity analysis, it has been accomplished that spectrum hole detection is more crucial at lower SNR values with large number of hops.

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An Adaptive Cooperation Diversity Scheme With Best-Relay Selection in Cognitive Radio Networks

Cited by 331 publications

References 19 publications

A Novel Approach to Enhance the Physical Layer Channel Security of Wireless Cooperative Vehicular Communication Using Decode‐and‐Forward Best Relaying Selection

A Novel Approach to Enhance the Physical Layer Channel Security of Wireless Cooperative Vehicular Communication Using Decode‐and‐Forward Best Relaying Selection

Interference-Assisted Wireless Energy Harvesting in Cognitive Relay Network with Multiple Primary Transceivers

Efficient Performance Analysis of Spectrum Sensing for Cascaded Multihop Network over Nagakami-m Fading Channels

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