A fractionally-sampling based frequency offset enhanced blind estimator for non-circular transmissions

Philippe Ciblat, Erchin Serpedin, Yan Wang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper deals with the problem of non-data-aided carrier frequency offset estimation of non-circular modulations transmitted through unknown frequency-selective channels. By exploiting the unconjugated cyclostationary statistics induced by oversampling the received waveform, an optimized carrier frequency offset estimator is proposed and its asymptotic (large sample) performance analyzed. In order for the proposed frequency estimator to achieve the minimum mean-square estimation error, it is shown that the oversampling rate need not be larger than twice the symbol rate. It is also shown that the proposed synchronizer is asymptotically jitter-free, admits a feedforward structure that may be implemented in digital form and is suitable for burst transmissions.

Original languageEnglish
Pages (from-to)659-663
Number of pages5
JournalConference Record of the Asilomar Conference on Signals, Systems and Computers
Volume1
Publication statusPublished - 2002
Externally publishedYes

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Jitter
Error analysis
Modulation
Statistics
Sampling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Hardware and Architecture

Cite this

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AB - This paper deals with the problem of non-data-aided carrier frequency offset estimation of non-circular modulations transmitted through unknown frequency-selective channels. By exploiting the unconjugated cyclostationary statistics induced by oversampling the received waveform, an optimized carrier frequency offset estimator is proposed and its asymptotic (large sample) performance analyzed. In order for the proposed frequency estimator to achieve the minimum mean-square estimation error, it is shown that the oversampling rate need not be larger than twice the symbol rate. It is also shown that the proposed synchronizer is asymptotically jitter-free, admits a feedforward structure that may be implemented in digital form and is suitable for burst transmissions.

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