Joint Estimation Schemes of Carrier and Sampling Frequency Offsets for MB - OFDM UWB Systems 


Vol. 30,  No. 10, pp. 965-975, Oct.  2005


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  Abstract

In this paper, we propose and evaluate joint carrier and sampling frequency offset estimation schemes based on the channel estimation sequences in PLCP (Physical Layer Convergence Procedure) preamble for the proper and efficient synchronization of the MB-OFDM UWB (Multi-Band Orthogonal Frequency Division Multiplexing Ultra Wide Band) systems which have recently drawn explosive attention for future W-PAN (Wireless Personal Area Network) applications. In the joint estimation schemes, we first estimate the sampling frequency offset, and then estimate the carrier frequency offset using the estimated sampling frequency offset. Moreover, to improve the reliability of the estimated offset values, each process uses a combination scheme based on weighting factors. Simulation results using IEEE 802.15 Task Group 3a UWB channel models reveal that the estimation scheme using the simple weighting factors based on easily-measurable received signal power of each sub-channel shows favorably comparable performance to the ideal scheme using the weighting factors based on the perfectly-estimated frequency response of the channel.

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  Cite this article

[IEEE Style]

C. Cho, S. Yang, Y. Shin, "Joint Estimation Schemes of Carrier and Sampling Frequency Offsets for MB - OFDM UWB Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 965-975, 2005. DOI: .

[ACM Style]

Changhoon Cho, Suckchel Yang, and Yoan Shin. 2005. Joint Estimation Schemes of Carrier and Sampling Frequency Offsets for MB - OFDM UWB Systems. The Journal of Korean Institute of Communications and Information Sciences, 30, 10, (2005), 965-975. DOI: .

[KICS Style]

Changhoon Cho, Suckchel Yang, Yoan Shin, "Joint Estimation Schemes of Carrier and Sampling Frequency Offsets for MB - OFDM UWB Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 965-975, 10. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880