Easy-hardware-implementation algorithm of sampling frequency synchronization in OFDM systems

Liang Qu, Zhi Guo Shi, Yu Jie Gu, Kang Sheng Chen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


After analyzing the impacts of sampling frequency offset on the performance of orthogonal frequency division multiplexing (OFDM) systems, a new sampling frequency synchronization algorithm in frequency domain was proposed and its mathematical analysis was presented. This algorithm was optimized to be easy for hardware implementation, and obtained 20% reduction in logic gates and double speed than the algorithm using least square (LS) method. Matlab simulations were conducted on an 802.11a system platform. Simulation showed that this algorithm worked effectively and fulfilled the standard requirements in both the additive white Gaussian noise (AWGN) channel and the multi-patch channel. The algorithm was successfully implemented on an 802.11a field programmable gate array (FPGA) platform. On-chip real-time analysis of the algorithm using Xilinx Chipscope Pro demonstrate that this algorithm can work efficiently and effectively as a block of an OFDM baseband receiver processor.

Original languageEnglish
Pages (from-to)935-940
Number of pages6
JournalZhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science)
Issue number6
StatePublished - Jun 2007
Externally publishedYes


  • 802.11a
  • Field programmable gate array (FPGA)
  • Orthogonal frequency division multiplexing (OFDM)
  • Sampling frequency synchronization


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