On last.fm: Ciara radio - Listen now!
BNET Business Network:
BNET
TechRepublic
ZDNet

FREE Registration is required

Overview:

Orthogonal frequency division multiplexing (OFDM) can be used with a multiple-input multiple-output (MIMO) system to improve communication quality and capacity. Pilot-symbol-aided or decision-directed channel estimation must be used to track the variations of the channel. However, while pilot symbols facilitate channel estimation, they reduce the transmit energy for data symbols per OFDM symbol under a fixed total transmit power constraint. This paper analyzes the effects of pilot-symbol-aided channel estimation on the lower bound of the system capacity in MIMO-OFDM systems with three different types of pilot patterns: independent, scattered, and orthogonal.

(Is this item miscategorized? Does it need more tags? Let us know.)

Format:PDFSize:214 KB
Date:Nov 2004
Pages:30

People who downloaded this item also downloaded

White Paper A Comparison of Blind Channel Estimation Schemes for OFDM in Fading Channels
White Paper Totally Blind Channel Estimation for OFDM on Fast Varying Mobile Radio Channels
White Paper Channel Estimation for D-BLAST OFDM Systems
White Paper The Application of Signal's Cyclostationarity in OFDM Systems
White Paper A Pseudorandom Postfix OFDM Modulator - Semi-Blind Channel Estimation and Equalization

Top results from Modems

Webcast Transform your Multi-Channel Customer Experience: Advantages of Customer Communications Management
White Paper RS-232: A Key To Understanding Data Communications
White Paper Enhance Customer Loyalty through Higher Responsiveness
White Paper The Role of Power Line Communications in the Networked Home
White Paper Build Yourself an ISP

» View all Modems listings

advertisement

White Papers, Webcasts, and Resources

Featured Training Courses

advertisement

SmartPlanet

  • Thought-provoking progressive ideas on diverse topics that intersect with technology, business, and life, and matter to the world at large. Visit SmartPlanet
  • More from IBM
  • Innovate your business' process model, play against the market, compete against others on our scoreboards and WIN! Try INNOV8 2.0: A BPM Simulator
  • Enabling Real-World Business Transformation through IBM Service Management Read the EMA Analyst Report
Click Here

Returning users: Log In Here!

Already registered on BNET, TechRepublic, or ZDNet? Simply log in.

Free Membership: Sign Up Now!

Sign up for a free membership today and get instant and unlimited access to one of the largest databases of white papers, webcasts, and casestudies anywhere. Your FREE membership allows you to:

  • Download an unlimited amount of content, including classic and current white papers, case studies, webcasts and more
  • Track content on your chosen topics of interest
  • Receive targeted email alerts when your favorite content is added
  • Save content for future reading
  • Receive our member newsletter

When you register to access this library, you allow us to share your information with companies that produce products or services featured in the library--so that such companies may contact you with information and offers regarding their products and services. This enables us to keep the library a free service. As a library registrant, you will receive a complimentary subscription to the ZDNet white paper newsletter and e-mail Must-Read News Alerts. You can unsubscribe from these at any time. By clicking the Sign up button, you indicate that you agree to our Terms and Conditions and have read and understand our Privacy Policy (updated).