Title page for etd-0807109-150555


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URN etd-0807109-150555
Author Hou-Lin Chen
Author's Email Address kiki_adonis@msn.com
Statistics This thesis had been viewed 5537 times. Download 1348 times.
Department Communications Engineering
Year 2008
Semester 2
Degree Ph.D.
Type of Document
Language zh-TW.Big5 Chinese
Title An Investigation into the Properties of ML-NVE with Channel Estimation Error and Carrier Frequency Offset in OFDM Systems
Date of Defense 2009-07-24
Page Count 59
Keyword
  • CFO
  • MLS
  • Noise variance
  • LS
  • Abstract Noise variance estimator is very important in communication system which could control the transmission power and help system to reach the maximum capacity. But almost every kind of noise variance estimators assume that channel status is perfectly. Unfortunately the estimation error is always existence. This paper discuss that the maximum likelihood noise variance estimator (ML-NVE) in orthogonal frequency division multiplexing (OFDM) system with estimated channel. We take two kinds of the most popular channel estimation (CE) schemes Least Square (LS) and Modified-Least Square (MLS) as our consideration. And we investigate the situation that the ML-NVE suffered by carrier frequency offset (CFO) due to imperfect synchronization. As result we will show off the mean and variance of ML-NVE in those situations.
    Advisory Committee
  • Chin-Liang Wang - chair
  • Chao-Kai Wen - co-chair
  • Char-Dir Chung - co-chair
  • Shyue-Win Wei - co-chair
  • Chih-Peng Li - advisor
  • Files
  • etd-0807109-150555.pdf
  • indicate accessible in a year
    Date of Submission 2009-08-07

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