Industry News

TestBench: November 2009 - AlphaTest

Micro-probes for Test Support Miniaturization
Is the Lack of Fine-Pitch Probes and Fixtures Preventing Product Advancement? Recent advances in micro-probe technology may have broken through the roadblock to miniaturization. Durable, fine-pitch probes in sizes from 20 to 8 mils along with corresponding test fixtures support product miniaturization in cases where the electronic assemblies have...
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CASAGRAS Report Maps Out Internet of Things

A massive increase in international co-operation and significant investment in awareness-building and training are essential if the concept of an Internet of Things (IoT) is to be turned into a meaningful reality, says a European Union-funded project in its final report, RFID and the Inclusive Model for the Internet...
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Nordic Reports Record Results

Ultra low power (ULP) RF specialist Nordic Semiconductor ASA has announced that despite the continued weakness in the global semiconductor industry, it has for the second consecutive quarter achieved record financial results during Q3 2009. The company reported its highest ever quarterly revenue performance – NOK 133.1 million –...
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Using Base Station and MIMO Channel Emulators to Characterize Performance of a Mobile WiMAX Device

This article describes how a channel emulator can be used to characterize the performance of a MIMO receiver. The testing was done in stages of increasing complexity, namely testing under AWGN conditions, MIMO testing with known static channels, and fi...
The IEEE 802.16 working group is focused on developing standards for Broadband Wireless Access. As a part of this work, a physical layer specification has been written for mobile devices, 1 which uses Orthogonal Frequency Division Multiple Access (OFDMA) in combination with advanced techniques such as Adaptive Modulation and...
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Deployment and Link Planning of Adaptive Coding and Modulation Radio Networks

This article covers how Adaptive Coding and Modulation (ACM) systems operate and can be deployed, illustrates their significant advantages, and recommends a new planning methodology. It shows that significant increases in data throughput can be obtaine...
Operators are faced with the challenge of providing enough transmission capacity for the almost exponential demand in bandwidth from new data services, while constrained by a relatively modest increase in revenue from those services (see Figure 1 ). This additional bandwidth demand is not an issue for fiber optic...
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The Missing Link in Ethernet Cellular Backhaul: IEEE 1588-2008, Precision Time Protocol

From its beginning, one of the challenges of mobile cellular communications systems has been delivering a very stable and accurate (as little as 16 parts per billion, ppb) long-term frequency reference at each base transceiver station (BTS) to maintain accurate radio transmit and receive frequencies needed for reliable inter-cell...
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The MIMO Analyzer: MIMO Measurements Made Simple

With the recent inclusion of MIMO into both WiMAX and LTE standards, MIMO technology is booming. In an unusual multidisciplinary approach, multi-mode multi-cavity microwave applicator, signal-processing, aperture-iris coupling and RF antenna engineering techniques are being jointly applied to provide realistic and repeatable emulation of MIMO. As a result, EMITE...
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