| Raed Mesleh, PhD
Vice Dean and Associate Professor
Transmitter Design and Hardware Considerations for Variant Space Modulation Techniques and Generalized Space Modulation Techniques
Past few years witnessed a tremendous growth in the demand for wireless services and huge increase in the number of mobile subscribers. A recent Cisco forecast reported that the global mobile data traffic has reached 1.2 Zettabytes per year in 2016, while global IP traffic will increase nearly threefold over the next 5 years, and will have increased 127-fold from 2005 to 2021. It is also anticipated in the same forecast that mobile data traffic will reach 3.3 zettabytes by 2021 and the number of mobile-connected devices per capita will reach 3.5. With such huge demand for more data rates and better quality of services, fifth generation (5G) wireless standard, whose first phase has been specified in Dec. 2017, has been under intensive investigation in the past few years. According to a recent report released by International Telecommunications Union (ITU), 5G standard is supposed to provide a downlink peak date rate of 20 Gbps and peak spectral efficiency of 30 bits/sec/Hz. Such huge data rates necessitate the need of new spectrum and more energy-efficient physical layer techniques. Physical layer techniques such as millimeterwave (mmWave) communications, cognitive and cooperative communications, visible light and free-space optical communication, non-orthogonal multiple access (NOMA), multiple-input multiple-output (MIMO) and massive MIMO techniques are under extensive investigation at the moment for possible deployments in 5G wireless networks. Among the set of existing technologies, MIMO systems promise a boost in the spectral efficiency by simultaneously transmitting data from multiple transmit-antennas to the receiver. Unfortunately, this linear gain requires high complexity transceivers and suffers from practical imperfections such as, spatial correlation, mutual coupling and others. Space modulation techniques (SMTs), such as spatial modulation (SM), space shift keying (SSK) and quadrature spatial modulation (QSM), are proposed to alleviate most of these precincts. In such techniques, specific transmit antenna or antennas is activated and the index of the active antenna conveys extra modulation bits to achieve spatial multiplexing gain. Yet, SMTs require a number of transmit antennas that isa power of two integer and can’t utilize arbitrary number of transmit antennas. Therefore, generalized SMTs (GSMTs), such as GSSK, GSM, GQSSK and GQSM are proposed in literature to allow the use of arbitrary number of antennas plus some other advantages. SMTs and GSMTs are predicted to allow simple transceiver architecture and to be robust to several imperfections as compared to other MIMO techniques. As such, they attracted momentous research interest in the past few years. This talk provides a discussion on the transmitter design of these techniques using minimum number of hardware components. It addresses also the achievable data rate, energy efficiency, hardware complexity and cost of implementation for these systems.
Dr. Raed Mesleh is currently the vice dean of the school of electrical engineering and information technology at German Jordanian University in Amman, Jordan. He received his PhD in 2007 from Jacobs University in Bremen, Germany. From 2007 to 2010 he was a postdoctoral fellow at Jacobs University. He was with the Electrical Engineering Department at University of Tabuk in Saudi Arabia from 2010 to 2015. During that period, he holds the position of department chair and the director of research excellence and intellectual property units at the deanship of scientific research. He was a visiting scholar at Boston University, The University of Edinburgh and Herriot–Watt University. His main research interests are in wireless communication and optical wireless communication with particular focus on MIMO techniques, mmWave communication FSO and VLC. He is an inventor and co-inventor of nine patents. He invented Spatial Modulation technique during his PhD and he is the inventor of Quadrature Spatial Modulation and Trellis Coded Spatial Modulation. He published more than 150 journal and conference papers with an overall citation of 6200. He received distinguished researcher award at University of Tabuk in 2013 and at German Jordanian University in 2016. In December 2016, he was awarded the Arab Scientific Creativity award from Arab Thought Foundation. He coauthored a book entitled “space Modulation Techniques” published by Wiley in 2018.