Multielement system capacities are usually thought of as limited only by correlations between elements. This paper shows that degenerate channel phenomena called "keyholes" may arise under realistic assumptions which have zero correlation between the entries of the channel matrix H and yet only a single degree of freedom. Canonical physical examples of keyholes are presented in the paper. For outdoor environments, the paper shows that roof edge diffraction is perceived as a "keyhole" by a vertical base array that may be avoided by employing instead a horizontal base array.
Did you find this white paper useful?
18 out of 37 users found this white paper useful
Related white papers
802.11n Access Points and Power over Ethernet: Key Considerations
In this 5 page report, you'll discover more about the key technical considerations when making the move to 802.11n. The report provides: ? An overview of PoE ? Information on verifying power...
Practical Considerations for deploying 802.11n whitepaper
There is a lot of confusion surrounding the capabilities and status of the new 802.11n WiFi standard; understandable since the standard is very broad and has been slow to develop. There...
Intel Case Study: Strix Systems Access/One Network
The difference between a Strix Systems Access/One Network and a typical enterprise network is simple: wires or, no wires. Going where only wired solutions have gone before, Strix Systems designed...
Mobility: Make The Case
Welcome to the PDF version of ZDNet's Intel-sponsored Mobility special report.The main theme of the report is the May 2007 launch of Intel's 'Santa Rosa' mobile platform (officially called Centrino...
Mobile Access Development - Extending Applications in the World Without Wires!
This webcast covers the use of IBM WEA, WECM and Workplace Client Technology (WCT) to provide End-to-End mobile capability and extend existing applications out to mobile users and devices. This...
Qualcomm Case Study: Hawaii HomeLoans, Inc.
Hawaii HomeLoans is the state's only 100 percent wireless, full-service mortgage banking company. HHL wanted to operate its business in a cost-effective fashion without wired LAN connectivity or any of...
Topology Discovery for Public IPv6 Networks
This paper presents Atlas, a system that facilitates the automated capture of IPv6 network topology information from a single probing host. It describes the Atlas infrastructure and its data collection...
