Noise enhanced signal detection and estimation

Hao Chen, Pramod K. Varshney, James H. Michels

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Noise is traditionally defined as an unwanted signal or disturbance to the system. In general, more noise in the system often leads to a worse system performance, e.g., less channel capacity, worse detection performance and degraded estimation accuracy. However, noise may play a constructive role in some systems. The phenomenon of noise enhanced system (PHONES) is observed and employed in many areas. In this paper, PHONES is investigated for some signal processing systems including detection and estimation. The mathematical framework to analyze PHONES is established and the optimum noise pdf is found. Some illustrative examples are also presented.

Original languageEnglish (US)
Title of host publicationConference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Number of pages5
StatePublished - Dec 1 2007
Event41st Asilomar Conference on Signals, Systems and Computers, ACSSC - Pacific Grove, CA, United States
Duration: Nov 4 2007Nov 7 2007

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393


Other41st Asilomar Conference on Signals, Systems and Computers, ACSSC
Country/TerritoryUnited States
CityPacific Grove, CA

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications


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