Comparative study of spectrum sensing techniques in cognitive radio networks

Khan, Fazlullah; Nakagawa, Kenji

doi:10.1109/wccit.2013.6618728

Cited by 45 publications

(24 citation statements)

References 19 publications

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“…Interesting surveys of spectrum sensing techniques are presented in [31,32] b In this paper, we use the notation N * to refer to as natural numbers including the zero and N to refer to as natural numbers without including the zero.…”

Section: Endnotesmentioning

confidence: 99%

Systematic construction of common channel hopping rendezvous strategies in cognitive radio networks

Guerra

Reguera

Souza

et al. 2015

J Wireless Com Network

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Cognitive radio networks (CRNs) have emerged as a promising paradigm that can solve the shortage of spectrum resources, providing the ability to adapt and opportunistically exploit the spectrum holes. The rendezvous process allows cognitive users to find a common channel and establish a communication link. In this paper, we focus on the design of fast blind rendezvous algorithms to guarantee that every node should be able to rendezvous in all common available channels. We follow a systematic approach by first proposing a role-based algorithm that ensures maximum rendezvous diversity and then extending it to a common strategy through the use of multiples radios. Both proposals guarantee rendezvous under symmetric and asymmetric models. Simulation results show that our proposals outperform other recently developed rendezvous protocols with similar approaches in terms of expected time to rendezvous and maximum time to rendezvous.

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Section: Endnotesmentioning

confidence: 99%

Systematic construction of common channel hopping rendezvous strategies in cognitive radio networks

Guerra

Reguera

Souza

et al. 2015

J Wireless Com Network

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“…The research of spectrum sensing technology focus on cooperative spectrum sensing such as soft fusion, hard fusion and linear weighted sums fusion, etc. [7][8]. References [9][10] propose a model of simplified linear weighted sum spectrum sensing model to solve the weight based on Modified Deflection Coefficient (MDC).…”

Section: Introduction Imentioning

confidence: 99%

A Linear Weighted Sum Multi-objective Optimization Algorithm Based on PSO for Wideband Spectrum Sensing

Wang¹,

Li²,

Zheng³

et al. 2015

Int. J. Onl. Eng.

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Abstract-In order to maximize throughput and minimize interference of the wideband spectrum sensing problem in OFDM cognitive radio sensor networks, a linear weighted sum multi-objective algorithm based on the Particle Swarm Optimization is proposed. The multi-objective optimization advantages of Particle Swarm Optimization are utilized to solve the optimal threshold vector of the spectrum sensing problem in OFDM cognitive radio sensor networks. So the network can get a larger throughput under the condition of small interference. The simulation results show that the proposed algorithm can make larger throughput while keeping the interference is smaller in OFDM cognitive radio sensor networks. Thus the spectrum resources are used more effectively.

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“…So the frequency resources are almost used in temporal and frequency domain. In space, the efficiency of spectrum usage is low [3]. In order to improve the efficiency, the concurrent communication interference problem must be overcome.…”

Section: Introductionmentioning

confidence: 99%

A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks

Peng

Zhu

et al. 2015

Proceedings of the 8th International Conference on Mobile Multimedia Communications

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To solve the problem that the traditional spectrum sensing can only obtain the limited information of primary user and the efficiency of spectrum usage is low, this paper proposes a spectrum situation scheme to obtain the interference distribution information of primary user in frequency and spatial domain. This scheme uses surface spline interpolation based on the information returned by a small amount of sensor nodes. On this basis, a new transmit power control mechanism based on location-awareness is proposed. This mechanism realizes the power control according to three kinds of position relations between primary user and secondary user. It can solve the concurrent communication interference problem. Simulation analysis shows that this mechanism can increase the capacity of cognitive network while maintaining a quality-of-service for primary user by limiting the interference generated by secondary user.

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Comparative study of spectrum sensing techniques in cognitive radio networks

Cited by 45 publications

References 19 publications

Systematic construction of common channel hopping rendezvous strategies in cognitive radio networks

Systematic construction of common channel hopping rendezvous strategies in cognitive radio networks

A Linear Weighted Sum Multi-objective Optimization Algorithm Based on PSO for Wideband Spectrum Sensing

A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks

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