Code-Division-Multiple-Access (CDMA) systems are placing new demands on component manufactures, test equipment, and measurement techniques. Requirements for the suppression of adjacent-channel power (ACP) have become more stringent than those required by older analog systems.
Berkeley Varitronics Systems has developed three CDMA Pilot PN scanners that are currently being used to diagnose and remediate problems in CDMA networks. This article presents some of the problems that have been found and diagnosed with pilot scanners. Other potential problems in CDMA networks are addressed, and CDMA Field tools capable of diagnosing these potential problems are introduced. ...
See what some of the historical challenges to Wireless LAN design have been and how they were solved at the start-up level. Discussed is the direct sequence spread spectrum system (DSSS) specified in 802.11. 802.11 and the specific frequency hopping spread spectrum system (FHSS).
Cutting the Cost of Application Security An ROI White Paper
As new vulnerabilities are discovered, businesses are forced to implement emergency fixes in their Web applications, which impose significant operational costs. Even more significantly, these businesses must re-test the application to ensure these emergency fixes do not introduce new problems that could be potentially even worse. ...
The deployment of next-generation networks such as WiMAX
(802.16e mobile) requires the accurate measuring of channel response, frequency re-use, and identifying interference issues. As a result, it is essential for vendors to choose the right signal generation and analysis tool for designing WiMAX devices and implementing WiMAX networks. Proper selection of WiMAX field test equipment is ...
Delphin TopMessage Data Acquisition and Control Systems CHESTERLAND OH—September 4, 2012
CAS DataLoggers recently provided the data acquisition device for a manufacturer developing a wide range of emission-reducing components to retrofit into existing vehicles. Along with producing diesel particulate filters, the company also supplied cold start controllers to reduce particulate emissions. CAS ...
Efficiency and effectiveness are key tenets in managing any business group. In security, these concepts revolve around managing resources and risk. It is crucial to measure a security program to understand how efficient and effective it is. There are four key challenges to traditional penetration testing that can make it inefficient and ineffective: 1) only a fraction of the enterprise is tested, ...
Learn more about the importance of efficiently and accurately testing, measuring and analyzing PTP data to assure IEEE 1588 network readiness. This paper focuses on emerging new solutions for measuring packet synchronization and the requirements needed to ensure a consistent, predictable, measurable level of PTP network quality.
See why using a genuine digitally modulated signal as a stimulus is a simple method of generating real time stimulus and ZebraTM used in testing the performance of a power amplifier for cellular and PCS systems.
The installation of an 802.11b Wireless LAN system to cover a large office setting can be very challenging and techniques found in cellular system engineering are often required. WLAN systems have the added complexity of operating in an unlicensed band where interference may not be under control of the WLAN manager, and the WLAN often operates in a harsher indoor RF environment. Large WLAN ...
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