Joint estimation of carrier and sampling frequency offsets using OFDM WLAN preamble

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7 Citations (Scopus)

Abstract

In this paper, the problem of joint estimation of carrier and sampling frequency offsets is considered, for IEEE 802.11ac-based OFDM wireless LAN systems, based on the guard interval and two long symbols (GI2L) in the preamble of a packet. The measurement model of the GI2L is developed, in the presence of both carrier and sampling frequency offsets. One method based on the GI2L is proposed and compared with some existing relevant methods based on long symbol/data symbols. An improved performance, measured by estimation error and bit error rate, is achieved by this method, at a similar computational load.
Original languageEnglish
Pages (from-to)2121-2161
Number of pages41
JournalWireless Personal Communications
Volume98
Issue number2
DOIs
Publication statusPublished - 2018

Keywords

  • carrier frequency offset (CFO)
  • orthogonal frequency division multiplexing
  • wireless LANs

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