<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/14750" mdate="2009-10-23 00:00:00"> <author>Wang Xue and Liu Dan and Liu Ying and Wang Molin and Qian Zhihong</author> <title>A Low Complexity Frequency Offset Estimation for MBOFDM based UWB Systems</title> <pages>1888 - 1892</pages> <year>2009</year> <volume>3</volume> <number>10</number> <journal>International Journal of Electronics and Communication Engineering</journal> <ee>https://publications.waset.org/pdf/14750</ee> <url>https://publications.waset.org/vol/34</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>A lowcomplexity, highaccurate frequency offset estimation for multiband orthogonal frequency division multiplexing (MBOFDM) based ultrawide band systems is presented regarding different carrier frequency offsets, different channel frequency responses, different preamble patterns in different bands. Utilizing a halfcycle Constant Amplitude Zero Auto Correlation (CAZAC) sequence as the preamble sequence, the estimator with a semicross contrast scheme between two successive OFDM symbols is proposed. The CRLB and complexity of the proposed algorithm are derived. Compared to the reference estimators, the proposed method achieves significantly less complexity (about 50) for all preamble patterns of the MBOFDM systems. The CRLBs turn out to be of well performance.</abstract> <index>Open Science Index 34, 2009</index> </article>