Interference cancellation in cognitive radio-based MC-CDMA system using pre-coding technique

Kumar, R. Dhilip; Vishvaksenan, K. S.

doi:10.1007/s11227-018-2503-6

Cited by 25 publications

(5 citation statements)

References 19 publications

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“…Consequently, MC-CDMA systems have emerged as promising candidates for the 4th generation of mobile radio systems [21]. Spread spectrum techniques and multi-carrier modulations offer numerous advantages, including the inherent information confidentiality of the spread spectrum [22], lower power spectral density of the transmitted signal, and the ability to accommodate multiple accesses through code division. With multi-carrier modulations, the emphasis is placed on achieving spectral efficiency and robustness against inter-symbol and inter-channel interference.…”

Section: Mc-cdma Techniquementioning

confidence: 99%

Improving Performance of MC-CDMA Systems Using UTTCM Channel Coding

Bendjillali,

Bendelhoum,

Elarbi

et al. 2024

JTIT

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Over the past decade, personal communications have witnessed exponential growth, fueled by the increasing number of connected users and the diversity of transmitted data types. This expansion necessitates a boost in the transmission systems' capacity to accommodate higher user numbers and data rates, simultaneously striving to optimize cost and complexity. Consequently, future communication systems are pivoting towards multi-carrier spread spectrum techniques (MC-CDMA), capitalizing on the robustness of OFDM multi-carrier transmissions against multipath propagation and leveraging the flexibility of the code division multiple access (CDMA) technique. This study addresses data transmission quality-related concerns within an MC-CDMA system by implementing UTTCM error correction codes. These codes aim to enhance channel spectrum efficiency and mitigate error probability. Simulation results demonstrate that the proposed transmission scheme offers significant improvements in terms of bit error rate and signal-to-noise ratio, while maximizing the bandwidth shared among users. Additionally, the incorporation of such equalization techniques as zero forcing (ZF) and minimum mean square error (MMSE), ensures extensive compensation for the channel selectivity effect.

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Section: Mc-cdma Techniquementioning

confidence: 99%

Improving Performance of MC-CDMA Systems Using UTTCM Channel Coding

Bendjillali,

Bendelhoum,

Elarbi

et al. 2024

JTIT

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“…The reasons for false identification (i.e., 22% from Table 1) of in-text citation frequencies were: (1) while citing a reference, authors have added/skipped some characters, and (2) reference in the format such as '' (Jinha, 2010;Funk et al, 2017;Scopus, 2021;Gusenbauer, 2019;Shahid et al, 2020;Shahid et al, 2021)'' where references number 2 to 5 are implicitly cited. Such deficiencies will be addressed in the future.…”

Section: Evaluation Of In-text Citation Calculationmentioning

confidence: 99%

“…This helped the users to figure out a solution to the well-known problem of considering all citations equally. The in-text citation frequencies have been reported as key attributes in discovering the important/influential citations (Shahid et al, 2020;Shahid et al, 2021;Zhu et al, 2015). Apart from this, various research studies have reported the importance of in-text citations for various purposes.…”

Section: Introductionmentioning

confidence: 99%

In-text citation’s frequencies-based recommendations of relevant research papers

Shahid

Afzal

Alharbi

et al. 2021

PeerJ Computer Science

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From the past half of a century, identification of the relevant documents is deemed an active area of research due to the rapid increase of data on the web. The traditional models to retrieve relevant documents are based on bibliographic information such as Bibliographic coupling, Co-citations, and Direct citations. However, in the recent past, the scientific community has started to employ textual features to improve existing models’ accuracy. In our previous study, we found that analysis of citations at a deep level (i.e., content level) can play a paramount role in finding more relevant documents than surface level (i.e., just bibliography details). We found that cited and citing papers have a high degree of relevancy when in-text citations frequency of the cited paper is more than five times in the citing paper’s text. This paper is an extension of our previous study in terms of its evaluation of a comprehensive dataset. Moreover, the study results are also compared with other state-of-the-art approaches i.e., content, metadata, and bibliography. For evaluation, a user study is conducted on selected papers from 1,200 documents (comprise about 16,000 references) of an online journal, Journal of Computer Science (J.UCS). The evaluation results indicate that in-text citation frequency has attained higher precision in finding relevant papers than other state-of-the-art techniques such as content, bibliographic coupling, and metadata-based techniques. The use of in-text citation may help in enhancing the quality of existing information systems and digital libraries. Further, more sophisticated measure may be redefined be considering the use of in-text citations.

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“…Yes [53] Building a smart gateway-based authentication and authorization method to prevent unauthorized access of medical information in an IoTenabled smart healthcare facility.…”

Section: Ref Purposesmentioning

confidence: 99%

“…Kerberos gives a lightweight protocol using symmetric-key cryptography, and RADIUS is a networking protocol employed for network authentication in wireless fields supporting access control, authentication, and accounting (AAA). Kumar and Gandhi [53] present an IoT access control framework combined with DTLS and CoAP-based authentication design. The motivation of this study is to build a secure system (with strong authentication and authorization), using an intelligent gateway-based method.…”

Section: Nomentioning

confidence: 99%

Protocol-Based and Hybrid Access Control for the IoT: Approaches and Research Opportunities

Pal

Jadidi

2021

Sensors

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Internet of Things (IoT) applications and services are becoming more prevalent in our everyday life. However, such an interconnected network of intelligent physical entities needs appropriate security to sensitive information. That said, the need for proper authentication and authorization is paramount. Access control is in the front line of such mechanisms. Access control determines the use of resources only to the specified and authorized users based on appropriate policy enforcement. IoT demands more sophisticated access control in terms of its usability and efficiency in protecting sensitive information. This conveys the need for access control to serve system-specific requirements and be flexibly combined with other access control approaches. In this paper, we discuss the potential for employing protocol-based and hybrid access control for IoT systems and examine how that can overcome the limitations of traditional access control mechanisms. We also focus on the key benefits and constraints of this integration. Our work further enhances the need to build hierarchical access control for large-scale IoT systems (e.g., Industrial IoT (IIoT) settings) with protocol-based and hybrid access control approaches. We, moreover, list the associated open issues to make such approaches efficient for access control in large-scale IoT systems.

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Interference cancellation in cognitive radio-based MC-CDMA system using pre-coding technique

Cited by 25 publications

References 19 publications

Improving Performance of MC-CDMA Systems Using UTTCM Channel Coding

Improving Performance of MC-CDMA Systems Using UTTCM Channel Coding

In-text citation’s frequencies-based recommendations of relevant research papers

Protocol-Based and Hybrid Access Control for the IoT: Approaches and Research Opportunities

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