White Papers

Modified SMI Techniques for Frequency Selective Channels in OFDM

Overview The Sample Matrix Inversion (SMI) algorithm has been widely applied in the filed of adaptive antenna arrays. However, in Time Division Multiple Access (TDMA) systems with known data sequences, a low cost solution would imply the computation of the beamformer based exclusively on this data. In some cases, this might not be possible since the known data could not be sufficient to get a stable estimate of both the sample covariance matrix and the steering vector needed for the SMI spatial filter. In this paper, windowing techniques are applied in order to calculate a beamformer per subcarrier for Orthogonal Frequency Division Multiplexing (OFDM) systems with very limited known training.

By downloading you agree to our Terms and Conditions. These include information regarding use of your personal data.

Publisher: Technical University of Catalonia
File Format: PDF
Date Published: Apr 14, 2007
Format: White Papers
Topics: Wireless LAN, Mobile - Wireless Communications

Similiar 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 r

Publisher: Siemens | Tags: 802.11n, ethernet, wan

WPA2 Security: Choosing the Right WLAN Authentication Method for Homes and Enterprises

Ask a hundred CIOs what three things about WLANs (wireless LANs) strike fear into their hearts, and the answers are like

Publisher: Global Knowledge | Tags: authentication, network, pki

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 sin

Publisher: Siemens | Tags: 802.11n, network, wan

What is a Wireless Network?: The Basics

Find out how small businesses are using both wireless networks and WiFi hotspots to stay in touch with co-workers, custo

Publisher: Cisco Systems | Tags: wireless networks

Maximum-Likelihood Carrier Frequency Offset Estimation for OFDM Systems in Fading Channels

Carrier Frequency Offset (CFO) is a major contributor to the inter-carrier - interference in OFDM systems. This effect b

Publisher: University of Notre Dame | Tags: cfo

Technical University of Catalonia White Papers

On-Line Predictive Load Shedding for Network Monitoring

Featured white papers

The Value of Location Intelligence in the Communications Industry

Pitney Bowes

Public Services are under pressure, the challenge is to do more with less. How do you improve citizen satisfaction, increase cost efficiencies and improve service delivery? The power of location intelligence is helping many local authorities...

Download now »
Best Practices for Translating Customer Satisfaction into Revenue

Citrix Online

Today's support organisations are focused on two top-level metrics: financial results and customer satisfaction. For most, it's easy to track financial performance, but customer satisfaction is akin to speaking a foreign language...

Download now »
HP print solutions and 3M

Hewlett-Packard (HP)

The objective for 3M was to optimize office printing infrastructure at 3M locations worldwide, reduce total cost and environmental footprint. Some of the business benefits acheived by switching to HP print solutions...

Download now »