Microwave Engineering Europe - September 2008 - (Page 17)

WIMAX/LTE FOCUS 17 “Whether in urban or regional areas, access for optical cable trenches or ducts can be difﬁcult to obtain, and interruptions due to accidental cable cuts are a constant threat,” he said. “In contrast, microwave links are quickly installed and less prone to accidental disturbance. For network operators, the prospect of owning the infrastructure, rather than leasing from competitors, adds to the attraction of a quickly installed, secure solution.” Accommodating the higher-capacity services opens the way for innovative system architectures in microwave backhaul networks. Dual-polarised antennas double the capacity of the antenna system. Moreover, the superior interference characteristics of ultra-high performance antennas allow the installation of additional antennas on existing sites as new microwave backhaul systems are deployed. Recent technological advances provide further backhaul options. Wojtkowiak expects two sections of the E-band spectrum, which are available between 71 and 86 GHz, to come into frequent use in 2009. Trial systems have already been deployed. Using 1- or 2-foot antennas, E-band microwave systems provide 200 to 600 Mbit/s capacity over distances up to 3 km. According to Wojtkowiak, the Whether in urban or regional areas, highcapacity microwave systems offer a ﬂexible and reliable solution to the backhaul dilemma. growing demand for enhanced wireless data services to be available ‘anytime and anywhere’ is increasing pressure on operators to re-assess their backhaul infrastructure — with higher capacity the key. “For the network operators, the expression ‘time is money’ rings true,” he said. “Quick to install, high-capacity microwave systems offer a ﬂexible and reliable solution to the backhaul dilemma as we embark on the next steps of wireless evolution.” 2) Putting it all on silicon In the near future ‘4G’ networks will face a host of challenges when it comes to indoor coverage or dealing with “urban canyons”. DesignArt, a fabless startup based in Israel, believes that 3G and 4G operators will need to raise indoor coverage substantially, in order to be able to deliver the required service capacity from their radio access networks (RANs). To do so, low-cost compact base station 9 NEGATIVE Gs. EVERYTHING IS SHAKING. THE PILOT HAS A REDOUT. OUR PRODUCTS JUST ENTERED THE COMFORT ZONE. Filters. Multi-Function Assemblies. IFMs. Components. Sage Laboratories, Inc. designs and manufactures RF and microwave components and subsystems for technically demanding applications. Sage solutions are targeted at leading edge OEM's and prime contractors in the aerospace, defense, homeland security, medical and commercial markets. Visit us at sagelabs.com ® ® T E C H N O L O G I E S 016-017-018-019_MWEE.indd 17 5/09/08 15:31:06 http://www.sagelabs.com http://www.sagelabs.com

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Microwave Engineering Europe - September 2008 News Contents Comment Cover Feature: Uncovering Test and Measurement’s Role in Advancing LTE and Mobile WiMAX WiMax: WiMax and LTE Need to Address Issues of Backhaul, Cost and Efficiency for Successful Deployment WiMax: Manufacturing Communications Technology Products in India Test and Measurement Mobile Platforms Evolve to Meet Future Demands Products Calendar

Microwave Engineering Europe - September 2008

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