A Maximum-Likelihood-Based Frequency Synchronizer for Dual-H Full-Response 4-ARY Continuous-Phase Modulation (CPM).

Abstract

Maximum-likelihood techniques are useful in finding structures for synchronizers for various cases. Synchronizers for frequency, phase, and timing have been found for various bandpass signaling techniques such as PSK, DPSK, QAM, MSK, and CPM. These include data-aided, decision-directed, clock-aided cases. For Continuous-Phase Modulation (CPM), however, apparently only the single modulation index case has ML-based synchronizers. This report describes a new non-data-aided, non-decision-directed ML-based frequency synchronizer (with no phase or timing information) derived for a full-response, dual-h (two modulation indexes), 4-ary CPM signaling scheme. The derived structure will be incorporated into future simulations to compare performance among several possible frequency synchronizers.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2000
Accession Number
ADA374027

Entities

People

  • B. E. Wahlen
  • R. H. Pettit

Organizations

  • Naval Information Warfare Systems Command

Tags

Communities of Interest

  • Human Systems
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acquisition
  • California
  • Communication Systems
  • Digital Communications
  • Electronic Mail
  • Equations
  • Frequency
  • Frequency Response
  • Information Operations
  • Maximum Likelihood Estimation
  • Modulation
  • New York
  • Notation
  • Phase
  • Phase Modulation
  • Simulations
  • Standards

Readers

  • Radio communications and signal processing.