报告人：Dr. Harald Haas，Reader

School of Engineering & Electronics, University of Edinburgh, UK

日 期：2008-11-26 下午四点

地 点：如心第四会议室

单 位：环球ug在线注册

BUAA-KTH无线通信研究中心

Abstract

Spatial modulation considers the transmit antenna array as a spatial constellation diagram (in analogy to digital modulation) with the constellation points being the actual antennas. As a consequence, spatial modulation maps a sequence of bits into a signal constellation point (classical digital modulation) and into a spatial constellation point (new spatial extension). As a result of the unique and unambiguous mapping of sub-sequences into the spatial domain, at any time instant, only one antenna transmits energy (this avoids ICI), and the actual information resides in the actual physical location of the transmitting antenna, or spatial constellation point. In other words, information is implicitly conveyed. This, of course, requires a new detection process at the receiver, namely the antenna detection which, however, is significantly less complex than any existing receiver algorithms such as V-BLAST (vertical Bell lab layered space-time) algorithm because it does not have to mitigate ICI. Since spatial constellations and signal constellations are independent, spatial modulation can be combined with any digital modulation scheme. In fact, the two dimensional complex signal plane is now extended to a third - the spatial dimension. Note that the spatial extension of the classical digital modulation schemes comes without any need for additional bandwidth or signal power. Since it is the location of the antenna that actually "conveys" information, an implicity information transmission is achieved.

Biography

Harald Haas received the PhD degree from the University of Edinburgh in 2001. His main research interests are in interference aware MAC protocols, multiuser access, link adaptation, scheduling, dynamic resource allocation, multiple antenna systems and optical wireless communication. From 2001 to 2002, Prof. Haas was project manager at Siemens AG (Information and Communication Mobile Networks) for an international research project on new radio access technologies. Prof. Haas joined International University Bremen (Germany), now Jacobs University Bremen, in September 2002 where he has since been Associate Professor of Electrical Engineering. In June 2007, Prof. Haas joined the University of Edinburgh (Scotland/UK) where he is Reader in the Institute for Digital Communications (IDCOM). He was invited by Beijing University of Posts and Telecommunication to join the International Guest Academic Talents (IGAT) base on Key Technologies for Telecommunications and Networks (brie°y "111-program"), and he was appointed a "Regular High-level Visiting Scientist" in December 2007. Prof. Haas received a best paper award at the International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) in Osaka/Japan in 1999 and holds more than twelve patents. Prof. Haas contributed a chapter to the "Handbook of Information Security" entitled "Air Interface Requirements for Mobile Data Services" by John Wiley & Sons, Inc. He co-authors a book entitled "Next Generation Mobile Access Technologies: Implementing TDD" with Cambridge University Press. His work on "optical wireless communication" was placed among "100 product ideas of the future" in March 2007. The technology and resulting potential products have been published in a book edited by Prof. HÄansch (received Noble Prize in Physics in 2005) in cooperation with the German Federal Ministry of Education and Research (Bundesministerium fÄur Bildung und Forschung) in September 2007.