Test & Measurement products from Rohde & Schwarz - like the Universal Radio Communication Tester R&S CMU300 or R&S CMU200 - are supporting 3rd generation technologies (3G technologies). Those supported standards are GSM, UMTS, GPRS and EDGE.
Enhanced Data rates for Global Evolution (EDGE) is a radio based high-speed mobile data standard. It allows data transmission speeds of 384 kbps to be achieved when all eight timeslots are used. This means a maximum bit rate of 48 kbps per timeslot. Even higher speeds may be available in good radio conditions.
EDGE was initially developed for mobile network operators who fail to win Universal Mobile Telephone System (UMTS) spectrum and gives incumbent GSM operators the opportunity to offer data services at speeds that are near to those available on UMTS networks.
Enhanced Data rates for Global Evolution (EDGE) can also provide an evolutionary migration path from GPRS to UMTS by implementing now the changes in modulation that will be necessary for implementing UMTS later. The idea behind it is to eke out even higher data rates on the current 200 kHz GSM radio carrier by changing the type of modulation used, whilst still working with current circuit (and packet) switches.
In addition, the TDMA industry association, the Universal Wireless Communications Corporation, has introduced what it calls EDGE Compact. This a spectrum efficient version of EDGE that will support the 384 kbits mandated packet data rates but will require only minimum spectral clearing and therefore could work for network operators with limited spectrum allocations. In fact, as a result of this, it has been renamed Enhanced Data Rates for GSM and TDMA Evolution.
ROHDE & SCHWARZ GmbH & Co. KG
Muehldorfstrasse 15, 81671 Munich, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
e-Mail: CustomerSupport@rohde-schwarz.com
Internet: http://www.rohde-schwarz.com/
