On the Ungerboeck and Forney Observation Models for Offset QPSK

Abstract

The Ungerboeck and Forney observation models for offset QPSK are derived for three different representations for OQPSK. The representations and their corresponding Ungerboeck observation models are different, but the trellises used by the maximum likelihood sequence estimators possess the same complexity. The Forney observation models are obtained in straight-forward way for the bit-based representations for OQPSK, but there is no Forney observation model in the traditional sense for the symbol-based OQPSK representation. In the case of the symbol-based OQPSK representation, a method for whitening the resulting non-linear system is described.

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Document Details

Document Type
Technical Report
Publication Date
Mar 12, 2012
Accession Number
ADA557561

Entities

People

  • Michael Rice
  • Mohammad Saquib

Organizations

  • Brigham Young University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Autocorrelation
  • Computational Complexity
  • Equations
  • Estimators
  • Filters
  • Linear Systems
  • Matched Filters
  • Noise
  • Notation
  • Numbers
  • Observation
  • Random Variables
  • Resource Management
  • Sequences
  • Test And Evaluation

Fields of Study

  • Mathematics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Radio communications and signal processing.