Robust and accurate frequency and timing synchronization using chirp signals

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Abstract

We propose a new robust and accurate synchronization procedure using a training sequence composed of chirp signals. We use a new integer frequency estimation algorithm and propose a new combination of a known fractional frequency offset estimation algorithm and timing synchronization algorithm. The training sequence is composed of one up and two down chirp symbols, also known as Newman phases. The integer frequency offset estimation algorithm uses the effect of timing and frequency offsets on the matched filter outputs of the chirp signals. Autocorrelation and reversed autocorrelation are used to acquire the timing instant and the fractional frequency offset. We present the complete timing and frequency synchronization procedure and study the output signals of the autocorrelation and reversed autocorrelation algorithms. Finally, we check the performance of the synchronization procedure via Monte Carlo simulation in several multipath channels. Our algorithms are accurate and more robust compared to previously published state-of-the art algorithms.
Original languageEnglish
Pages (from-to)115-123
Number of pages9
JournalIEEE Transactions on Broadcasting
Volume55
Issue number1
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

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Synchronization
Autocorrelation
Frequency estimation
Matched filters
Multipath propagation

Keywords

  • Chirp signals
  • OFDM
  • preamble
  • single carrier
  • synchronization

Cite this

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title = "Robust and accurate frequency and timing synchronization using chirp signals",
abstract = "We propose a new robust and accurate synchronization procedure using a training sequence composed of chirp signals. We use a new integer frequency estimation algorithm and propose a new combination of a known fractional frequency offset estimation algorithm and timing synchronization algorithm. The training sequence is composed of one up and two down chirp symbols, also known as Newman phases. The integer frequency offset estimation algorithm uses the effect of timing and frequency offsets on the matched filter outputs of the chirp signals. Autocorrelation and reversed autocorrelation are used to acquire the timing instant and the fractional frequency offset. We present the complete timing and frequency synchronization procedure and study the output signals of the autocorrelation and reversed autocorrelation algorithms. Finally, we check the performance of the synchronization procedure via Monte Carlo simulation in several multipath channels. Our algorithms are accurate and more robust compared to previously published state-of-the art algorithms.",
keywords = "Chirp signals, OFDM, preamble, single carrier, synchronization",
author = "Sandrine Boumard and Aarne M{\"a}mmel{\"a}",
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Robust and accurate frequency and timing synchronization using chirp signals. / Boumard, Sandrine; Mämmelä, Aarne.

In: IEEE Transactions on Broadcasting, Vol. 55, No. 1, 2009, p. 115-123.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Robust and accurate frequency and timing synchronization using chirp signals

AU - Boumard, Sandrine

AU - Mämmelä, Aarne

N1 - Project code: 6679

PY - 2009

Y1 - 2009

N2 - We propose a new robust and accurate synchronization procedure using a training sequence composed of chirp signals. We use a new integer frequency estimation algorithm and propose a new combination of a known fractional frequency offset estimation algorithm and timing synchronization algorithm. The training sequence is composed of one up and two down chirp symbols, also known as Newman phases. The integer frequency offset estimation algorithm uses the effect of timing and frequency offsets on the matched filter outputs of the chirp signals. Autocorrelation and reversed autocorrelation are used to acquire the timing instant and the fractional frequency offset. We present the complete timing and frequency synchronization procedure and study the output signals of the autocorrelation and reversed autocorrelation algorithms. Finally, we check the performance of the synchronization procedure via Monte Carlo simulation in several multipath channels. Our algorithms are accurate and more robust compared to previously published state-of-the art algorithms.

AB - We propose a new robust and accurate synchronization procedure using a training sequence composed of chirp signals. We use a new integer frequency estimation algorithm and propose a new combination of a known fractional frequency offset estimation algorithm and timing synchronization algorithm. The training sequence is composed of one up and two down chirp symbols, also known as Newman phases. The integer frequency offset estimation algorithm uses the effect of timing and frequency offsets on the matched filter outputs of the chirp signals. Autocorrelation and reversed autocorrelation are used to acquire the timing instant and the fractional frequency offset. We present the complete timing and frequency synchronization procedure and study the output signals of the autocorrelation and reversed autocorrelation algorithms. Finally, we check the performance of the synchronization procedure via Monte Carlo simulation in several multipath channels. Our algorithms are accurate and more robust compared to previously published state-of-the art algorithms.

KW - Chirp signals

KW - OFDM

KW - preamble

KW - single carrier

KW - synchronization

U2 - 10.1109/TBC.2008.2008712

DO - 10.1109/TBC.2008.2008712

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JO - IEEE Transactions on Broadcasting

JF - IEEE Transactions on Broadcasting

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