A Cross-Layer Diversity Technique for Multi-Carrier OFDM Multimedia Networks

Abstract

Application Layer Diversity: *Multiple description coding: transmit and receive distinct descriptions through independently fading channels Generate multiple distinct bitstreams (descriptions) of the source such that each description independently describes the source with a certain level of fidelity. Losses of some of the descriptions will not jeopardize the decoding of correctly received descriptions. Fidelity improves as the number of received descriptions increases. Typically the composite quality using multiple descriptions is less than that achievable with a single description at the same net rate.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2004
Accession Number
ADA485266

Entities

People

  • Laurence Milstein
  • Pamela Cosman
  • Yee Sin Chan

Organizations

  • University of California, San Diego

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Channel Models
  • Coders
  • Coding
  • Computer Programming
  • Decoding
  • Engineering
  • Frequency
  • Frequency Diversity
  • Information Operations
  • Military Research
  • Multimedia
  • Networks
  • Orthogonal Frequency Division Multiplexing
  • Packet Loss
  • Reliability
  • Symbols

Readers

  • Computer Programming and Software Development.
  • Computer Science.
  • Radio communications and signal processing.