| Publisher | Georgia Institute of Technology | ||
|---|---|---|---|
| Format | 249.5KB PDF | Date added | 13 Apr 2007 |
| Topics | Wireless LAN, Mobile - Wireless Communications | ||
| Downloads | 42 | ||
A new blind channel estimation scheme for OFDM-systems is proposed based on the ML-principle. By avoiding the use of second- and higher-order statistics, a very fast convergence rate is achieved. A novel approach is also proposed for resolving the phase ambiguity of the blind channel estimate without the need for any reference symbols. The approach combines different modulation schemes on adjacent subcarriers, such as 3-PSK and QPSK, to resolve phase ambiguity. Simulations were performed for mobile radio environments with high Doppler frequencies and short-to-medium delay spreads. The achieved performance is comparable to that of pilot-based channel estimation for the case of QPSK-modulation.
Did you find this white paper useful?
26 out of 50 users found this white paper useful
Related white papers
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...
How to Protect your Critical Information Easily
Safeguarding massive amounts of sensitive, confidential data—from legally protected personal information to intellectual property and trade secrets—from malicious attacks and accidental loss is one of IT's biggest challenges. With employees...
Adapting to the Wireless Environment With 802.11k
This webcast will explain what is 802.11k and why is it needed, 802.11k and the wireless environment, radio resource measurement and control and how 802.11k will impact IT Adaptive algorithms....
Cisco Wireless Solution Helps Florida Hospital Enhance Patient Care
Florida Hospital administrators wanted to link more than 90 facilities within the vast Florida Hospital system to increase the patient care capability of caregivers, make network management faster and easier,...
Colubris Networks Case Study: Connexion by Boeing
Connexion by Boeing is globally recognized as the industry's first and foremost provider of secure, high-speed in-flight Internet access for commercial and executive aircraft operators. In creating the Connexion by...
Conducting a WLAN Site Survey and Implementation for the Cisco® Unified Wireless Network
When preparing to conduct a site survey for a Cisco® wireless LAN (WLAN) installation, follow the Cisco network design methodology: Prepare, Plan, Design, Implement, Operate, and Optimize (PPDIOO). PPDIOO addresses...
SyncScan: Practical Fast Handoff for 802.11 Infrastructure Networks
This paper describes SyncScan, a low-cost technique for continuously tracking nearby base stations by synchronizing short listening periods at the client with periodic transmissions from each base station. The paper...
