Coarse Frame Synchronization for OFDM Systems Using SNR Estimation Conference Paper

abstract

• In wireless orthogonal frequency division multiplexing (OFDM) systems, coarse frame synchronization and signal-to-noise ratio (SNR) values are two crucial parameters for OFDM receivers. In this paper, we develop a coarse timing estimator to overcome the plateau phenomenon by using delayed correlation between two estimated SNR values. The training symbol is designed for multiple pieces instead of two parts to mitigate the Doppler effect for SNR estimation. Compared with the Minn's scheme, our proposed scheme has smaller estimation variance both in EVA and ETU channels, which can also provide an estimated SNR value in the time domain. The obtained SNR value can be further reused to carrier frequency offset (CFO) estimation or decoding for system performance improvement. 2012 IEEE.

name of conference

• 2012 IEEE Global Communications Conference (GLOBECOM)

authors

• Zhang, Xi

published proceedings

• 2012 IEEE Global Communications Conference (GLOBECOM)

author list (cited authors)

• Yang, F., Zhang, X. i., & Zhang, Z.

citation count

• 2

complete list of authors

• Yang, Fan||Zhang, Xi||Zhang, Zhong-pei

publication date

• December 2012

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

Digital Object Identifier (DOI)

• 10.1109/glocom.2012.6503736

International Standard Book Number (ISBN) 13

• 9781467309219

start page

• 3965

end page

• 3969

URL

• http://dx.doi.org/10.1109/glocom.2012.6503736