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Frequency Offset Estimation by Multi-Band Averaging Method: A New Approach for MB-OFDM Based Ultra-Wideband Communication System

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Abstract

In this literature, we present a new method for estimating the coarse frequency offset in multi-band orthogonal frequency division multiplexing (MB-OFDM) based ultra-wideband (UWB) communication systems. The proposed training based coarse frequency offset (CFO) estimator performs an averaging of initial estimate over the multiple bands of transmission during estimation process. The proposed multi-band averaging provides an improved estimation of approximately three times for band group 1 (BG1) compared to our earlier proposed scheme. To prove the efficiency of the proposed scheme, the Cramer Rao lower bound (CRLB) of the estimation error is calculated and compared with the simulation results. We illustrate the performance of MB-OFDM system in terms of bit-error rate (BER) with multi-band averaged frequency synchronization (MBAFS) and compare with earlier reported results for 100,000 noisy realizations in UWB channel model 2 (CM2).

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Authors and Affiliations

  1. G. S. S. School of Telecommunications, Indian Institute of Technology, Kharagpur, 721302, India

    Debarati Sen & Saswat Chakrabarti

  2. Department of E & ECE, Indian Institute of Technology, Kharagpur, 721302, India

    R. V. Raja Kumar

Authors
  1. Debarati Sen
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  2. Saswat Chakrabarti
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  3. R. V. Raja Kumar
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Correspondence to Debarati Sen.

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Sen, D., Chakrabarti, S. & Raja Kumar, R.V. Frequency Offset Estimation by Multi-Band Averaging Method: A New Approach for MB-OFDM Based Ultra-Wideband Communication System. Wireless Pers Commun 54, 623–633 (2010). https://doi.org/10.1007/s11277-009-9744-x

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  • DOI: https://doi.org/10.1007/s11277-009-9744-x

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