Opportunistic Spectrum Access of Sparse Wideband in Stand-Alone and Cooperative Cognitive Radio Networks

Alam, Sk. Shariful; Lucio, M.; Regazzoni, Carlo S.

doi:10.1109/smartcity.2015.167

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…Among the various spectrum sensing schemes energy based sensing is the simplest and popular technique as it involves lowest computational complication [1], [2]- [3]. This approach carries less complexity related to implementation issues [4], [5], [6], [7].…”

Section: Manuscript Received On July 31 2021mentioning

confidence: 99%

“…Hence, CSS mode of operation improves the faultlessness of PU present in the radio environment and gives provision to CR devices to use of underutilized spectrum [5]. Thus, increasing the accuracy of detection performance will enhance the achievable throughput to the CR nodes.…”

Section: Manuscript Received On July 31 2021mentioning

confidence: 99%

“…As a result, the false alarm probability is minimized considerably for the CR network. So, the CSS method is proposed to enhance the sensing accuracy by implementing multiple nodes in CRN as a solution of the troubles that aries by dint of the vagueness of noises, multichannel-fading effects and shadowing in the course of sensing of vacant spectrum [1], [5]. Later, the detection performance is further enriched in terms of additional CR nodes.…”

Section: B Cooperative Spectrum Sensingmentioning

confidence: 99%

“…The particular sensing results have been composed in [5], [9], exploiting various binary fusion rules for instance AND rule, OR rule, Majority rule, and Chair-Varshney fusion rule that is also labeled as optimal fusion rule. Equation ( 6) states the logic that has been utilized in FC for hard decision fusion.…”

Section: Fig 2 An Elementary Pictorial Representation Of Cooperative Spectrum Sensing For Cr Networkmentioning

confidence: 99%

See 3 more Smart Citations

Performance Analysis of Cognitive Radios in a Cooperative Scheme over Nakagami Fading Channels

Alam¹,

Mallick²,

Habib³

2021

IJSP

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Radio spectrum is a primary requisite for wireless technologies and sensor networks. Due to the high demand and expense of the radio spectrum, it is guaranteed to extend its efficient utilization it. To expand the effective operation and serviceability of the radio spectrum in wireless communications, the notion of Cognitive Radio (CR) is presented in where the licensed spectrum of Primary User (PU) is used opportunistically by unlicensed CR users without interfering with the prioritized PU data transmission. Usually, a CR system is applied to detect empty radio bands by exploiting well-known spectrum sensing schemes and then unused spectrum is opportunistically used by the CR system. Various channels fading of the radio environment are to be considered while introducing different spectrum sensing approaches. In this regard, sensing time to find a vacant radio spectrum should be maintained minimum to reliably get the desired throughput. In this paper, an agreement issue is addressed between the time required for effective spectrum sensing and the achievable throughput of the CR network. Our proposed model illustrates the achievable throughput of CR node in cooperation provides better performance than stand-alone CR node. This is achieved by addressing the variation of the number of nodes under the Nakagami fading distribution. In conclusion, the maximum throughputs of the cooperative CR nodes are guaranteed as per simulation and data analysis.

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