Low-complexity timing synchronization for OFDM based on CAZAC and Golay sequences

Colombo, Martin; Marziani, Carlos De; Hernández, Álvaro; Ureña, J.; Mayosky, M.A.

doi:10.1109/icuwb.2017.8250961

Cited by 1 publication

(1 citation statement)

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“…This had joint signal detection, timing synchronization, and CFO estimation, which simplified the complete synchronization structure and improved the synchronization performance. In 2017, Colombo et al [ 27 ] designed a preamble, which was based on Golay sequences and CAZAC sequences, and they proposed a low-complexity timing and frequency synchronization algorithm for OFDM systems. When compared with the existing alternative methods, this novel scheme achieved competitive performance and significantly reduced computational complexity.…”

Section: Related Workmentioning

confidence: 99%

Timing and Frequency Synchronization Using CAZAC Sequences for OFDM Systems

Peng

et al. 2023

Sensors

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Since orthogonal frequency division multiplexing (OFDM) systems are very susceptible to symbol timing offset (STO) and carrier frequency offset (CFO), which cause inter-symbol interference (ISI) and inter-carrier interference (ICI), accurate STO and CFO estimations are very important. In this study, first, a new preamble structure based on the Zadoff–Chu (ZC) sequences was designed. On this basis, we proposed a new timing synchronization algorithm, called the continuous correlation peak detection (CCPD) algorithm, and its improved algorithm: the accumulated correlation peak detection (ACPD) algorithm. Next, the correlation peaks that were obtained during the timing synchronization were used for the frequency offset estimation. For this, the quadratic interpolation algorithm was adopted as the frequency offset estimation algorithm, which was better than the fast Fourier transform (FFT) algorithm. The simulation results showed that when the correct timing probability reached 100%, under the parameters of m = 8 and N = 512, the performance of the CCPD algorithm was 4 dB higher than that of Du’s algorithm, and that of the ACPD algorithm was 7 dB. Under the same parameters, the quadratic interpolation algorithm also had a great performance improvement in both small and large frequency offsets, when compared with the FFT algorithm.

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Section: Related Workmentioning

confidence: 99%

Timing and Frequency Synchronization Using CAZAC Sequences for OFDM Systems

Peng

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

Low-complexity timing synchronization for OFDM based on CAZAC and Golay sequences

Cited by 1 publication

References 11 publications

Timing and Frequency Synchronization Using CAZAC Sequences for OFDM Systems

Timing and Frequency Synchronization Using CAZAC Sequences for OFDM Systems

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