A time-frequency decision-feedback loop for carrier frequency offset tracking in OFDM systems
IEEE Transactions on Wireless Communications
A robust channel equalizer for OFDM TV receivers
IEEE Transactions on Consumer Electronics
Fast carrier frequency offset compensation in OFDM systems
IEEE Transactions on Consumer Electronics
An equalizer initialization algorithm for IEEE802.11a and HIPERLAN/2 receivers
IEEE Transactions on Consumer Electronics
Phase noise analysis of the OFDM communication system by the standard frequency deviation
IEEE Transactions on Consumer Electronics
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OFDM PHY has been selected as North American DSRC standard (IEEE 802.11p). In this paper, we present a robust inner receiver suitable for DSRC communications, whose core is composed by a synchronizer, a one-tap frequency domain equalizer (FDE) and a pilot-based phase estimator. The equalizer uses least-mean-square (LMS) algorithm to track not only the variation of the DSRC channel in 5.9GHz band but also the residual frequency/phase errors that are not yet being corrected by the synchronizer device. In order to keep the LMS equalizer working well, we utilize a pilot-based phase estimator to help estimate the variation and the errors. The simulation results indicate that our proposed inner receiver works fairly well for two DSRC channel models.