2020/08/14 by Koosha Pourtahmasi Roshandeh, Roshandeh, Koosha Pourtahmasi, Mostafa Mohammadkarimi +3
Computer Science · Engineering · #Advanced Wireless Communication Techniques #Advancements in PLL and VCO Technologies #FOS: Electrical engineering #Power Line Communications and Noise #Signal Processing (eess.SP) #Wireless Communication Networks Research #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2008.06586
openalex publication_date 2020/08/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In wireless communication systems, Orthogonal Frequency-Division Multiplexing\n(OFDM) includes variants using either a cyclic prefix (CP) or a zero padding\n(ZP) as the guard interval to avoid inter-symbol interference. OFDM is ideally\nsuited to deal with frequency-selective channels and additive white Gaussian\nnoise (AWGN); however, its performance may be dramatically degraded in the\npresence of impulse noise. While the ZP variants of OFDM exhibit lower bit\nerror rate (BER)and higher energy efficiency compared to their CP\ncounterparts,they demand strict time synchronization, which is challenging in\nthe absence of pilot and CP. Moreover, on the contrary to AWGN, impulse noise\nseverely corrupts data. In this paper, a new low-complexity timing offset (TO)\nestimator for ZP-OFDM for practical impulsive-noise environments is proposed,\nwhere relies on the second-other statistics of the multipath fading channel and\nnoise. Performance comparison with existing TO estimators demonstrates either a\nsuperior performance in terms of lock-in probability or a significantly lower\ncomplexity over a wide range of signal-to-noise ratio (SNR) for various\npractical scenarios.\n