Thematic presentations. Stefan Parkvall, Ericsson. Johan Henriksson, Saab Communication. Prof. Claes Beckman, University of Gävle

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1 Thematic presentations Top-technology and Centers of Excellence Monday afternoon: The thematic invited speakers will give an overview of Swedish Toptechnology and Excellence Centres in Radio Science and Communications. Stefan Parkvall, Ericsson Long-Term 3G Evolution - Concept Overview The 3GPP work item "Evolved UTRA and UTRAN" defines a Long-Term Evolution (LTE) concept assuring competitiveness of 3GPP-based access technology. The objective of the work item is to specify Orthogonal Frequency Division Multiplexing (OFDM) based downlink operation and Single Carrier Frequency Domain Multiple Access (SC-FDMA) based uplink operation for the Evolved UTRA. The purpose of the seminar is to give an overview of the current status of LTE concept development. Johan Henriksson, Saab Communication Interference and Collocation Issues for Radio Communication Systems in Airborne Early Warning and Control system An Airborne Early Warning and Control system (AEW&C) must communicate with many other systems and users. Besides the radar sensors the platform has to be protected against many kinds of attacks and must have systems for its flight. All these systems use antennas and parts of the radio spectrum for transmission and reception of information. Planning and design of the radio systems involves very complex interference and collocation issues. Prof. Claes Beckman, University of Gävle Center for RF-measurement technology In February 2006 the Centre for RF Measurement Technology was established at the University of Gävle (HIG). The long term objectives of the centre are to establish world leading research in the area of RF Measurement Technology, support education of radio engineers for local, national and international radio companies at HIG, become a natural collaboration partner for leading industry companies and universities and to support local and national small and middle sized companies in the radio business. Today the centre has collaboration with more than 15 national and international companies within 3 major projects in the field of RF measurement technology research spanning from

2 power amplifiers and antennas to electromagnetic interference in industrial environments. The annual research budget is in the area of 10MSEK In addition to the research projects the centre also supports education and collaboration with local industry, high schools and community. The centre is located easy to find, well equipped laboratories in Gävle Technology Park, next to the University of Gävle campus. Prof. Bo Thidé, Uppsala University IRF, Uppsala, and LOIS Space Centre, Växjö The LOIS project aims at developing and utilising new radio methods for studies of the Earth and its space environment. Inaugurated in 2004, the LOIS test site located approximately 5 km east of Växjö, has been in operation continuously and used for investigating the possibilities of extracting more information out of radio beams than hitherto possible. A second LOIS station is being built in Ronneby and a third one is being planned for Poznan, Poland. The main novelty with LOIS is that it uses vector sensing antennas to sample, both in space and time, the antenna current vectors across an antenna array aperture. Translating these local current measurements into estimates of the local, instantaneous electric and magnetic field vectors of the radio beam, a number of conserved quantities can be measured and utilised. This goes far beyond the utilisation of the conserved quantities of conventional radio (electromagnetic linear momentum or Poynting vector/power flux) and therefore allows for a substantially better characterization of radio signals. One example of an unconventional conserved quantity is the orbital part of the electromagnetic angular momentum which, unlike the spin part of the angular momentum (also known as wave polarisation), has not yet been used in radio to any significant degree. While the spin angular momentum adds two electromagnetic degrees of freedom, the orbital angular momentum (OAM) can in principle add an infinite number of degrees of freedom, limited essentially only by engineering constraints. Hence, by the exploitation of the OAM degrees of freedom, more and other types of information can be extracted from a radio signal than permitted by conventional methods. An overview of our new radio ideas, as well as results from numerical simulations and actual observations will be presented. Prof. Jens Zander, KTH Wireless@KTH Wireless@KTH is a research center in Mobile Systems for Mobile Services that together with researchers at KTH and its industry partners is developing this key field for Sweden and the Stockholm area. The center engages in interdisciplinary research projects in collaboration between academia and industry. The current focal areas of the center are wireless infrastructures and systems for mobile services. An important role of the center is to bridge

3 the gap between the design of services and systems and their commercial deploment. The center is located in the "Wireless Valley" of Kista just north of Stockholm and was originally inaugurated in 2001 with KTH, Ericsson and TeliaSonera, Microsoft and Nokia as founding partners. Currently the center has 6 larger industry partners. The center is active in planning, fund raising, funding and management of research projects. Research groups from KTH, Stockholm University and Stockholm School of Economics are currently participating in projects. Prof. Mats Viberg, Chalmers Charmant Charmant (Chalmers Research Centre on Microwave Antenna Systems) is a Strategic Research Centre sponsored by the Swedish Foundation for Strategic Research (SSF). Started in 2006, the centre is hosted by the Department of Signals and Systems (S2) at Chalmers, and involves participants from Microwave Electronics at Chalmers, as well as the Swedish Defence Research Agency (FOI), the Technical Research Institute of Sweden (SP), and collaborative nodes at Lund University (LU) and Uppsala University (UU). The overall objective of the Charmant centre is to contribute with frontier research on topics of strategic importance for Swedish antenna systems industry. The research within Charmant covers several aspects of antenna systems, from the near-field interaction via the actual antenna and front-end electronics to signal processing and communication systems. The work is divided into four main areas as outlined below: System Modeling, simulation and system-level optimization. The work here is focused on model-based simulation of antenna systems, using physical models of components and propagation with varying complexity and accuracy. We are also working with optimization of components, and the ultimate objective is to use the simulator to get meaningful system-level goal functions. Antennas in Complex Environments, where the main interest is medical applications of microwaves. We have worked with statistical methods for and analysis of image reconstruction in tomography with application to breast cancer detection. Besides detection and localization, we are also working with microwave treatment using hyperthermia. Related to antennas in complex environments we have also developed a body conforming finite element method for solving EM problems related to structurally integrated antennas. Wideband and Multifunction Antennas. The so-called Eleven antenna is a recent Chalmers invention that provides over a decade bandwidth. Our main interests here is co-design of the antenna with a Low-Noise Amplifier (LNA). We are also interested in small wideband antennas. Within this topic we are also working on distributed antenna systems. A new way of base station collaboration has been studied as well as channel estimation for relay-assisted MIMO systems. Front-End Electronics. In this area we have worked with antenna-circuit co-design for power applications and integrated antennas-on-chip. In the latter topic, we have designed an integrated receiver with an antenna, a LNA and a mixer, working at 220

4 GHz. The circuit has been manufactured, and the first measurements indicate a performance well in agreement with simulations. Ingmar Karlsson, Chalmers Antenna Systems Excellence Centre (CHASE) Chalmers Antenna Systems VINN Excellence center- Chase is a research and development center where researchers work in close cooperation with industry. Chase shall help all Partners to gain new knowledge which make them more competitive and able to develop products that meet social and environmental needs through: Cooperation and multidisciplinary synergies. Access to the combined knowledge, new research results and competence. A fast track from idea to product. Chase: Provides an innovative environment to promote industrially oriented research and innovation in Antenna Systems technologies. Has a long term goal of sustainable growth for the involved business areas in Sweden. Is part of VINNOVA s VINN Excellence program ( Is a consortium consisting of Chalmers University of Technology, SP Technical Research Institute of Sweden, The Swedish Defense Research Agency (FOI) and 15 companies operating in Sweden. Joins Swedish and international companies, large enterprises, SMEs and spin-offs. Bridges several industrial business areas with common technological needs within the four business areas: Medtech (medical technology), Wireless (wireless and mobile communication), Satcom (satellite communication), and Sensing. Brings advances in antenna systems technology faster to industrial exploitation and use for society. Is interdisciplinary and engages 10 professors from 5 different research groups at Chalmers. People from 12 nationalities are actively involved within the projects Comprises in stage 1 ( ) 5 research projects within 3 business areas. Is hosted by Department of Signals and Systems at Chalmers. Office is at Hörsalsvägen 11, Göteborg. Homepage

5 Prof. John B Anderson, Lund University The SSF Strategic Center for High Speed Wireless Communication HSWC envisions a world of diverse wireless users who want to connect in the best and fastest way for their own location, needs, and ability to pay. Wireless services range over networks in the home and workplace, communication with remote friends and family, entertainment, control and surveillance. Each has its own cost, demand for quality, bandwidth and physical environment. The Center develops new technologies to provide faster connections, when and where they are needed. It designs all the components of modern wireless transmisson, as well as their optimal interaction. These technologies are the key to lower cost, simpler operation, wider bandwidth and higher quality. The Swedish Foundation for Strategic Research (SSF) funded HSWC at Lund University in January 2006 at the level of 8 MSEK per year. To this is added about 1 MSEK per year in other funding. The Center builds on extensive research relationships among the seniors and many longterm industrial relationships. There are 12 senior researchers in the center, and it supports 10 doctoral and postdoc researchers. It is an exciting time not only for HSWC but for the wireless communication industry. Employment is growing rapidly in Lund and elsewhere. The early-2000s decline is now firmly behind us, and the migration to Fourth Generation is clearly on the horizon. There are also new challanges: Shortages of trained manpower are predicted for the next years and wireless growth depends in large degree on mastering new technologies. HSWC meets these challenges by cooperating closely with industrial partners. Special places where we are helpful are high-risk, deep-future research and educational contributions such as short courses and workshops. In its research work, the Center is dedicated to the "Physical Layer" of wireless communication, that is, to the technologies that allow us to transmit, receive and protect digital data in an efficient way. A special focus of the Center is high speed. Sending each bit has an energy cost, and each bit must be handled by the equipment, so that more bits means more energy. As the amount of data carried per unit of radio bandwidth grows, the situation in fact worsens faster than this, because higher rates in the same bandwidth need more energy per bit. Thus efficiency of transmission is a prime concern of the Center: We must push toward the theoretical limits in every way. As well, high speed often means multiple types of transmission, with names like Bluetooth, WiMax, and 3G, that change with the user's location and the type of information. High speed also means exploring new, higher radio spectra that are freely available, but for which the technology is also much less understood. As a result of all these forces, the Center has created a four-fold research program that explores (i) Circuits and devices, including nanostructures, that work at new, higher radio frequencies; (ii) A new short-range high speed technology called ultrawideband radio; (iii) MIMO transmission ("multiple-in, multiple-out") that covers a space more effectively by using many antennas; and (iv) Better methods for shaping and forming signals, protecting data, and correcting errors, including improved chips to do the processing.

6 Prof. Herbert Zirath, Chalmers GigaHertz Centre The GigaHertz Centre is a ten-year university-industry-public initiative to promote research and innovation in high-frequency components and technologies. The host of the Centre is Chalmers University of Technology, Department of microtechnology and nanoscience, Microwave Electronics Laboratory,. The research programme consists of two subprogrammes, Microwave Power and Microwave System-on-Chip, both split up in two projects each. The projects are Switched-Mode Power Amplifiers, Wideband WBG transceivers, THz sensors and Frequency Generation. The topics and budgets of the projects reflect common needs among the industrial partners in research and innovation for novel microwave technologies. The presentation will report the results from activities during the first 1.5 years in the centre. In addition, related highlights from the latest research from the Microwave Electronics Laboratory will be reported. Prof. Björn Ottersten, KTH Autonomic Complex Communication Networks, Signals and Systems (ACCESS) KTH recently launched the ACCESS Linnaeus Center primarily funded by vetenskapsrådet thorough a10 research grant. It is a networked world: People communicate independent of distance and time; systems communicate with systems as connectivity becomes a natural feature of any electronic device. Communication networks are vital infrastructures in our society and the basis of more and more services that we take for granted; from connectivity of personal devices in the home and car to global communication and positioning via satellite systems. At the core of these systems are some fundamental technical issues: they must be designed to carry out the intended functions; the systems must perform efficiently and predictably; they must be manageable, controllable, and upgradeable and they must be reliable to the point of being infallible. Together with industrial partners, ACCESS researchers at KTH aim at developing fundamental understanding and engineering principles for designing self-managed and scalable communication networks in which applications may share real-time information and cooperate in an efficient, affordable, and reliable manner.