Informatics Publishing Limited

Komalpreet Kaur ¹, Gurmeet Kaur ¹

Affiliations
1 Department of Electronics and Communication Engineering, Punjabi University, Patiala, IN

Abstract

Security is the most important aspect considered while using the wireless local area networks. Various techniques have been used in the past to increase the security of WLAN's while simultaneously making the authentication process faster. The paper presents the review of various such techniques that have been used in the past for the enhancement of the security and achieving fast authentication in wireless networks.

Keywords

Wireless Local Area Network, Wireless Security, Fast Authentication.

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Komalpreet Kaur ¹, Gurmeet Kaur ¹

Affiliations
1 Department of Electronics and Communication Engineering, Punjabi University, Patiala, IN

Abstract

Speed of the connection establishment and communication in wireless local area networks is a very important aspect to be considered along with achieving faster authentication of the communicating nodes to make the overall system efficient. While few standards developed by IEEE were easy to implement and had minimum hardware and software requirements but did not provide much desired security, others provided a secure environment to carry out the data transmission but took ample time to provide initial authentication services. In this paper a new method, FALAN-AKA, i.e. fast wireless local area network authentication and key agreement has been proposed which provides minimal delay in the initial authentication and provides the security of data by encrypting it.

Keywords

Wireless Local Area Network, Fast Initial Authentication, Advanced Encryption Standard.

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Komalpreet Kaur ¹, Charanjit Singh ¹

Affiliations
1 Department of Electronics and Communication Engineering, Punjabi University, Patiala, IN

Abstract

Frequency spectrum is scared resource and efficient use of it can easily fulfil the need of future applications. But its efficient use is not possible within the existing system, where the allocation of spectrum is done based on fixed spectrum access policy that causes under use of spectrum. For efficient utilization of spectrum new inventive techniques are needed. Using Dynamic spectrum access (DSA) policy we can manipulate the available spectrum. For this purpose Cognitive radio (CR) is a attractive solution to the spectral congestion problem by introducing strategic use of the frequency bands that are not heavenly occupied by licensed users. This paper presents the study of different algorithms for spectrum sensing techniques of cognitive radio networks (CRN). As we know CR is a form of wireless communication which detects vacant spectrums occupies it and avoids the busy one. However to detect vacant spectrum we use the spectrum sensing techniques and CR are known for their transfer values and rate of recognition of the secondary nodes. The problem with the CR is the maximum consumption of energy, so it prevents the system from the high consumption of power utilization.

Keywords

Cognitive Radio(CR), Spectrum Sensing, One Way Relaying, Two Way Relaying, Outage Probability, Genetic Algorithm(GA), Particle Sworn Algorithm(PSO).

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Komalpreet Kaur ¹, Amanpreet Kaur ¹

Affiliations
1 Department of Electronics and Communications Engineering, Thapar Institute of Engineering and Technology, IN

Abstract

In this paper, two single-band frequency selective surfaces (FSS) for low frequency stop and pass band with miniaturized element have been proposed. A square loop patch is constructed to realize single stop band responses. Similarly, a square with slot is constructed to realize a single pass band response at lower frequencies. Pass band is realized by slot while stop band is realized by a patch. Both pass band and stop band FSS structure having dimensions 25mm×25mm×1.605mm. FSS structures are designed and simulated using CST MWS V’16 with unit cell boundary along X and Y axis and floquet ports. Simulated results show that proposed FSS structures for both pass band and stop band are independent of angle of incidence and polarisation. Axial ratio bandwidth of the proposed FSS structure (<3dB) for bandwidth 1GHz. Equivalent circuits of the stop band and pass band FSS structures shows series and parallel combination of inductance and capacitance respectively.

Keywords

Frequency Selective Surface (FSS), FR4, Reflection, Transmission, Miniaturized, Single Square Loop (SSL), Angle of Incident (AOI).

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