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TECHNOLOGY PAPERS
Stefan Brämberg, Technischer Direktor von Ascom Wireless Solutions verfasst regelmäßig Artikel über Trends in Technologie und Kommunikation.
Biographie von Stefan Brämberg
| Stefan Brämberg erlangte den Master of Science in Elektrotechnik an der Chalmers University of Technology in Göteborg. Seine berufliche Laufbahn begann er als Test-Ingenieur bei Ericsson, wo er während 20 Jahren in verschiedenen Positionen tätig war. Dabei arbeitete er in den Bereichen Radarsysteme für Flugzeuge und Radio-Basisstationen. Seit 1997 ist Stefan Brämberg für die F&E-Abteilung bei Ascom Wireless Solutions verantwortlich und nun als CTO tätig. Während seiner Zeit bei Ascom hat das Unternehmen mehrere grosse Technologiesprünge gemacht, ähnlich wie die DECT-Wireless-Technologie, die IP-Konvergenz und die WiFi-Mobilität, um nur einige zu nennen. Stefan Brämberg ist ein anerkannter Referent für Themen im Bereich Technologie und Kommunikations-Trends. |  |
| Technische Aufsätze |
| DECT Security The DECT standard has been the de facto voice mobility standard for almost two decades and is since a few years back now also growing in the US. Already at the initial design security was addressed and DECT and GSM shared the same design philosophy. Read More |
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| Indoor Positioning The topic of asset tracking and applications that need indoor positioning has been hot for almost a decade. The real breakthrough is yet to come but applications and systems are slowly expanding. Stefan Brämberg has had a look at the different methods and technologies and explains how the four different methods; Base station positioning, Sign post positioning, Field strength positioning and Time delay positioning work. Read More |
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| TETRA – Terrestrial Trunked Radio The TETRA (TErrestrial Trunked RAdio) standard is implemented in Europe and is spreading to other parts of the world. Read more |
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| CAT-IQ – ANOTHER PET IN THE FAMILY? CAT-iq stands for “Cordless Advanced Telephony internet and quality”. This standard is a proposal from the DECT Forum supported by ETSI to bring the DECT standard into the IP age. Read more |
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| WiMAX – An alternative to WIFI? WiMAX is nowadays frequently mentioned in media; but what is it really, and what importance will it have in relation to WiFi and IP-DECT? Read more |
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| IP for everything alreday today IP and internet is on all agendas today, most of us are already hooked users in one way or the other. But will everything run on IP soon? Read more |
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| SIP SIP is the first IP-telephony protocol that is endorsed and eventually backed up by both the telecom industry and the Internet community. The broad industry support and strong initiatives to achieve interoperability has led to an open de-facto standard for IP-based telephony systems. Read More |
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| Accelerated Life Test Portable devices are subjected to heavy wear and tear in normal use, especially in industrial and healthcare environments. It is of outmost importance to detect weak designs and early failure parts before they reach our customers. Read More |
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| INDOOR GSM WITH FEMTOCELL TECHNOLOGY We start to have a new buzz word in the telecom industry – femtocell. I will try to shed some light on the subject. “Femto” comes from the same prefix as micro (10-6) and nano (10-9) and means 10-15 but in this context should be interpreted as “very small”. Although the concept of femtocell can be applied to many different technologies, today it’s focused on 3G systems. Very small cells are in this context similar to the cell sizes that we se in DECT. Read More |