Evolution of Diversity Gain with and without Coding Gain in MIMO for Emerging Wireless Networks

Abstract

The wireless networks are growing rapidly that cause constraint in data rate and power consumption. The multiple-input multiple-output (MIMO) has incredible performance to overcome the limitations by spatial multiplexing gain. Spatial multiplexing gain is achieved with the help of space time encoding technique in which a high rate signal splitting into multiple lower rate streams and transmitting them through the different antennas. This paper provides a comprehensive comparative study of diversity gain with and without coding gain for 4 × 2 and 4 × 4 MIMO systems. The coding gain is explored through turbo coding (TC) with ½ and ¾ coding rates, and diversity gain is adopted by orthogonal space time coding (OSTBC). Turbo coding is useful to reduce the forward error correction in multiplexed data transmissions. The compounding of OSTBC and turbo coding is valuables to increase data rate and reduce energy consumption by reducing bit error rate in emerging wireless network transmissions. Simulation results convinced the validity of proposed scheme. He has a bachelor degree in electronics engineering from Sir Syed University of Engineering and Technology, Karachi, Pakistan and master's degree in computer and communication networks from Telecom & Management SudParis (ex INT), Evry, France. He has worked as a lecturer and the head of the Network Department from 2007 to 2009 at Universities of Engineering Science and Technology of Pakistan (UESTP-France), Karachi, Pakistan and also work as an assistant professor from 2009 to 2011 at COMSATS Institute of information Technology, Abbottabad, Pakistan. His main research areas include, MIMO, beamforming, WiMax over GSM/GPRS network, physical layer of wireless network, energy efficient wireless network.Zhe Chen received his B.S degree in electronics engineering, the M.S degree in signal and information processing, and the PhD. degree in signal and information processing from Dalian university of Technology (DUT), Dalian, China, in 1996, 1999 and 2003 respectively. He joined the Department of electronics Engineering, DUT, as a lecturer in 2002, and become an associate professor in 2006. His research includes speech processing, image processing and wideband wireless communication. Fuliang Yin was born in Fushun city, Liaoning province, China, in 1962. He received the B.S. degree in electronic engineering and M.S. degree in communications and electronic systems from Dalian University of Technology (DUT), Dalian, China, in 1984 and 1987, respectively. He