A Two-Dimensional Multiarmed Bandit Approach to Secondary Users with Network Coding in Cognitive Radio Networks

Qu, Yuben; Dong, Chao; Niu, Dawei; Wang, Hai; Tian, Chao

doi:10.1155/2015/672837

Cited by 2 publications

(1 citation statement)

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“…The main idea is to apply the concept of CR in network coding transmissions, in which BS tries sending new information while helping user transmissions as a relay. Qu et al [14] proposed a study on learning how to use two-dimensional multiarmed bandit (MAB) to use network coding to improve SU throughput in CRNs when channel quality is unavailable at SUs. Qu et al [15] developed an efficient network coding strategy for SUs while considering uncertain idle durations in CRNs.…”

Section: State-of-art Reviewmentioning

confidence: 99%

System Design for Opportunistic Spectrum Access Using Statistical Decision-Making and Coded-MAC

Rodríguez-Colina

Jiménez

Palacios-Luengas

et al. 2020

Wireless Communications and Mobile Computing

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Different mechanisms have been proposed to solve opportunistic spectrum access (OSA). In order to address spectrum management efficiently, these mechanisms can be divided into four main functionalities, spectrum sensing, decision-making, sharing, and mobility. These functionalities depend on the interpretation and adaptation of different parameters, for example, sensing and data interpretation for adaptive modulation, power adjustments, and changes regarding the range of frequency operation. For the decision-making function, a novel approach is proposed in which coding information is added to the establishment of the communication process thus assisting the medium access control (MAC). The presence of cognitive radio devices in the network coverage range can be controlled or coordinated by using specific redundancy codes. Hence, Reed Solomon (RS) code is used in this paper as part of the handshaking process to provide error correction. In addition, a redundancy strategy based on Rabin’s information dispersal algorithm (IDA) is presented to provide fault tolerance to the communication between cognitive radio devices. In this case, the information is divided into fragments dynamically, and each fragment is coded by an RS code and reassigned to a subset of recipients using alternate paths. This work shows how to optimize spectrum access based on IDA and RS codes to diversify channel occupation without losing significant information with several frequency hops presented in cognitive radio communications. The validations were executed in a discrete event simulator developed in Python. The proposed system for OSA was found to perform better than other approaches using pilot sequences. Our proposal, therefore, provides fault tolerance, to diversify channel occupation, and helps identify the presence of primary and secondary users when a common control channel (CCC) is implemented by the optimization of the spectrum use.

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Section: State-of-art Reviewmentioning

confidence: 99%