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Open access

Qun Li and Ding Xu

Communications , vol. 8, no. 2, pp. 940–950, 2009. [4] L. Qun and X. Ding, “Power allocation for ergodic capacity and outage probability tradeoff in cognitive radio networks,” IEICE Transactions on Communications , vol. 98, no. 10, pp. 1988–1995, 2015. [5] R. Zhang, S. Cui, and Y.-C. Liang, “On ergodic sum capacity of fading cognitive multiple-access and broadcast channels,” IEEE Transactions on Information Theory , vol. 55, no. 11, pp. 5161–5178, 2009. [6] X. Kang, Y.-C. Liang, and H. K. Garg, “Fading cognitive multiple access channels: Outage capacity

Open access

M. Lakshmanan, P.S. Mallick and L. Nithyanandan

Yang, A Novel time domain synchronous orthogonal frequency division multiple access scheme , in Proc. IEEE GLOBECOM 2009, Hawaii, USA, pp.1–6, 2009. [5] Schmidl, T. and Cox, Robust frequency and timing synchronization for OFDM , IEEE Transaction on communication, Vol.45, No. 12, pp.1613-1621, 1997. [6] Seung Duk Choi Jung Min Choi, and Jae Hong Lee, An initial Timing Offset Estimation Method for OFDM system in Rayleigh Fading Channel , Proc. IEEE 64 th Vehicular Technology Conference, VTC-2006, pp. 1-5, 2006. [7] Boemer, L., and Antweiler, M

Open access

Ibrahim Develi and Meryem Filiz

-Division Multiple-Access Systems, IEEE T. Commun. 47 (1999), 133-138. [11] ZHA, W.-BLOSTEIN, S. D. : Multiuser Receivers that are Robust to Delay Mismatch, IEEE T. Commun. 50 (2002), 2072-2081. [12] LU, R. C. Y. : Multiuser Detection in CDMA MIMO Systems with Timing Mismatch, Dissertation for the Master of Science Degree. Ontario: Queen‘s University, 2004. [13] KÄRKKÄINEN, K. H. A.-LEPPÄNEN, P. A. : The Influence of Initial-Phases of a PN Code Set on the Performance of an Asynchronous DS-CDMA System, Wir. Per. Commun. 13 (2000), 279

Open access

Fahimeh Rahbari and Hamid Reza Bakhshi

References [1] “Part 16: Air Interface for Fixed Broadband Wireless Access Systems, IEEE Standard 802.16.2004.” [2] “Part 16: Air interface for fixed and mobile Broadband wireless access systems, IEEE standard. 802.16.e-2005.” [3] K. Pushpa, C. N. Kishore, and Y. Yoganandam, “Comparative study of four modified timing metrics for the Frame Synchronization in OFDMA mode of WMAN,” in Indoor and Mobile Radio Communications [4] L. Hanzo, M. Mnster, B. J. Choi, and T. Keller, OFDM and MC-CDMA for

Open access

R. Deeptha and Rajeswari Mukesh

Abstract

Single Sign-On (SSO) decreases the complexity and eases the burden of managing many accounts with a single authentication mechanism. Mission critical application such as banking demands highly trusted identity provider to authenticate its users. The existing SSO protocol such as OpenID Connect protocol provides secure SSO but it is applicable only in the consumer-to-social-network scenarios. Owing to stringent security requirements, the SSO for banking service necessitates a highly trusted identity provider and a secured private channel for user access. The banking system depends on a dedicated central banking authority which controls the monetary policy and it must assume the role of the identity provider. This paper proposes an extension of OpenID Connect protocol that establishes a central identity provider for bank users, which facilitates the users to access different accounts using single login information. The proposed Enhanced OpenID Connect (EOIDC) modifies the authorization code flow of OpenID Connect to build a secure channel from a single trusted identity provider that supports multiple banking services. Moreover, the EOIDC tightens the security mechanism with the help of SAT to avoid impersonation attack using replay and redirect. The formal security analysis and validation demonstrate the strength of the EOIDC against possible attacks such as impersonation, eavesdropping, and a brute force login. The experimental results reveal that the proposed EOIDC system is efficient in providing secured SSO protocol for banking services.

Open access

Adam Flizikowski, Rafał Kozik, Henryk Gierszal, Marcin Przybyszewski and Witold Hołubowicz

. J. Chen, C.-C. Wang, F. C.-D. Tsai, C.-W. Chang, S.-S. Liu, J. Guo, W.-J. Lien, J.-H. Sum, and C.-H. Hung, "The design and implementation of WiMAX module for ns-2 simulator," in the 2006 Workshop on ns-2: the IP Network Simulator , Pisa, Italy, 2006, article no. 5. S. Coleri, M. Ergen, A. Puri, and A. Bahai, "A study of channel estimation in OFDM systems," in Vehicular Technology Conference , vol. 2, December 2002, pp. 894-898. F. da Fonseca, "Description of the wimax module," in the 18th IEEE International

Open access

Stanisław Rzewuski and Krzysztof Kulpa

, "Application of the CLEAN Class Methods for Detecting Weak Radar Signals in the Presence of Strong Interference Signals," Prace Naukowe Politechniki Warszawskiej. Elektronika , pp. 1-158, 2008, z. 164. IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 5: Enhancements for Higher Throughput. S. D. Deshpande

Open access

Ivars Beinarts, Uldis Grunde and Andris Jakovics

Abstract

In this paper the advanced monitoring system of multiple environmental parameters is presented. The purpose of the system is a long-term estimation of energy efficiency and sustainability for the research test stands which are made of different building materials. Construction of test stands, and placement of main sensors are presented in the first chapter. The structure of data acquisition system includes a real-time interface with sensors and a data logger that allows to acquire and log data from all sensors with fixed rate. The data logging system provides a remote access to the processing of the acquired data and carries out periodical saving at a remote FTP server using an Internet connection. The system architecture and the usage of sensors are explained in the second chapter. In the third chapter implementation of the system, different interfaces of sensors and energy measuring devices are discussed and several examples of data logger program are presented. Each data logger is reading data from analog and digital channels. Measurements can be displayed directly on a screen using WEB access or using data from FTP server. Measurements and acquired data graphical results are presented in the fourth chapter in the selected diagrams. The benefits of the developed system are presented in the conclusion.

Open access

Danish Khan, Peter Ball and Geoff Childs

power routing. ISWPC, pp. 557-561, 2008. [7] M. Maleki et al. Power-aware Source Routing Protocol for Mobile Ad Hoc Networks. International Symposium on Low Power Electronics and Design (ISLPED), California, USA, August 2002, pp. 72-75, 2002. [8] J. Deng and Z. J. Haas. Dual Busy Tone Multiple Access (DBTMA): A New Medium Access Control for Packet Radio Networks. IEEE International Conference on Universal Personal Communications (ICUPC), Florence, Italy, October 5-9 1998, pp. 973-977, 1998. [9] H. Holma and A. Toskala