Performance Enhancement of LTE, a Multi-Hop Relay Node, by Employing Half-Duplex Mode
Relay stations are usually used to improve the signal strength for users near a cell edge, thus extending cell coverage. This paper proposes a study on the performance of a multi-hop relay network. This work introduces half-duplex relay with two scenarios. The first scenario is that wherein the relay node (RN) acts to amplify and forward (AF) and decode and forward (DF), where the relay and user equipment (UE) are fixed. The second scenario is that wherein the proposed UE moves with angular velocity around RN, whereas RN moves with horizontal velocity toward the base station (BS) and UE. The performance measures of each scenario are represented, where the impact velocity on the latency time and system capacity is explained. Both simulation and analytical calculations are provided.
Keywords: LTE, AF, DF, HDX, Relay node
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ABOUT THE AUTHORS
Jaafar Adhab Al-Dhaiban
Jaafar Adhab earned his B.Sc. degree in Electrical and Electronic Engineering, major in Telecommunications, from the University of Technology, Baghdad, Iraq and earned his M.Sc. degree in Wireless Communications in 2002 from the University of Technology, Baghdad, Iraq. Engr. Adhab worked with the Motorola Company (AIEE) as a field engineer and a system engineer for communication from 2005 to 2011. He also worked with ATDI Company for RF planning communication sites (IC telecom software). Now, he is studying to earn his Ph.D. degree in the Computer and Communication School of Engineering, University Malaysia Perlis (UniMAP).
Abid Yahya
Abid Yahya earned his B.Sc. degree in Electrical and Electronic Engineering, major in Telecommunications, from the University of Engineering and Technology. Peshawar, Pakistan. Dr. Yahya began his career on a path that is rare among other research executives. He earned his M.Sc. and Ph.D. degrees in Wireless and Mobile systems in 2007 and 2010, respectively, from the Universiti Sains Malaysia, Malaysia. Currently, he is working in the School of Computer and Communication Engineering, Universiti Malaysia Perlis (UniMAP). His professional career outside the academia includes writing for international magazines and newspapers as a freelance journalist. He employed this combination of practical and academic experiences to a variety of consultancies for major corporations.
R.Badlishah Ahmad
R.B. Ahmed obtained his B. Eng in Electrical and Electronic Engineering from Glasgow University in 1994. He obtained his M.Sc and Ph.D. in 1995 and 2000, respectively, from the University of Strathclyde, UK. His research interests are on computer and telecommunication network modeling using discrete event simulators, optical networking, and coding and embedded system based on GNU/Linux for vision. He has five (5) years of teaching experience in Universiti Sains Malaysia. Since 2004, he has been working in Universiti Malaysia Perlis (UniMAP), where he is currently the Dean in the School of Computer and Communication Engineering and the Head of the Embedded Computing Research Cluster.
Aini Syuhada Md Zain
Aini Syuhada Md Zain received her B. Eng. (Computer and Information Engineering) in 2005 from the International Islamic University Malaysia and M. Eng. (Computer and Communication Engineering) in 2007 from the National University of Malaysia. She has been working as a lecturer at the Universiti Malaysia Perlis since 2007. Currently, she is finishing her Ph.D. in Communications Engineering at the Universiti Malaysia Perlis (UniMAP). She is engaged in research on general areas of optical and wireless communication, wireless network such as RFID, and mobile communication.
Jaafar Adhab Al-Dhaiban
Jaafar Adhab earned his B.Sc. degree in Electrical and Electronic Engineering, major in Telecommunications, from the University of Technology, Baghdad, Iraq and earned his M.Sc. degree in Wireless Communications in 2002 from the University of Technology, Baghdad, Iraq. Engr. Adhab worked with the Motorola Company (AIEE) as a field engineer and a system engineer for communication from 2005 to 2011. He also worked with ATDI Company for RF planning communication sites (IC telecom software). Now, he is studying to earn his Ph.D. degree in the Computer and Communication School of Engineering, University Malaysia Perlis (UniMAP).
Abid Yahya
Abid Yahya earned his B.Sc. degree in Electrical and Electronic Engineering, major in Telecommunications, from the University of Engineering and Technology. Peshawar, Pakistan. Dr. Yahya began his career on a path that is rare among other research executives. He earned his M.Sc. and Ph.D. degrees in Wireless and Mobile systems in 2007 and 2010, respectively, from the Universiti Sains Malaysia, Malaysia. Currently, he is working in the School of Computer and Communication Engineering, Universiti Malaysia Perlis (UniMAP). His professional career outside the academia includes writing for international magazines and newspapers as a freelance journalist. He employed this combination of practical and academic experiences to a variety of consultancies for major corporations.
R.Badlishah Ahmad
R.B. Ahmed obtained his B. Eng in Electrical and Electronic Engineering from Glasgow University in 1994. He obtained his M.Sc and Ph.D. in 1995 and 2000, respectively, from the University of Strathclyde, UK. His research interests are on computer and telecommunication network modeling using discrete event simulators, optical networking, and coding and embedded system based on GNU/Linux for vision. He has five (5) years of teaching experience in Universiti Sains Malaysia. Since 2004, he has been working in Universiti Malaysia Perlis (UniMAP), where he is currently the Dean in the School of Computer and Communication Engineering and the Head of the Embedded Computing Research Cluster.
Aini Syuhada Md Zain
Aini Syuhada Md Zain received her B. Eng. (Computer and Information Engineering) in 2005 from the International Islamic University Malaysia and M. Eng. (Computer and Communication Engineering) in 2007 from the National University of Malaysia. She has been working as a lecturer at the Universiti Malaysia Perlis since 2007. Currently, she is finishing her Ph.D. in Communications Engineering at the Universiti Malaysia Perlis (UniMAP). She is engaged in research on general areas of optical and wireless communication, wireless network such as RFID, and mobile communication.
