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This paper presents the feature of energy distribution parameters for power spectrum. Then based on the spectrum analysis, an OFDM recognition method is proposed using the energy distribution parameter P, the kurtosis coefficient of the power spectrum and the power spectrum parameter R. Power spectrum is preprocessed to eliminate the effect of signal bandwidth, sampling rate, carrier frequency and...
A new multicarrier system, termed multi-symbol encapsulated orthogonal frequency division multiplexing (MSE-OFDM), was proposed earlier, in which one cyclic prefix (CP) is used for multiple OFDM symbols. The motivation of this proposal is to address the disadvantages of OFDM system, i.e., the high peak to average power ratio and sensitivity to carrier frequency offset at the same time. Although more...
Multi-symbol encapsulated OFDM system will find wide applications in the future communication systems for its capabilities of mitigating the major drawbacks of the traditional OFDM. In this paper a channel estimation method for MSE-OFDM is proposed. The method is based on the maximum likelihood principle, in order to minimize the mean square error of channel estimation, the optimal training sequence...
A new fast time synchronization technique is proposed for DVB-H receiver in this paper. Only one DVB-H OFDM symbol is needed to achieve accurate time synchronization by using the correlation function of the received signal and four time-domain local references generated from the DVB-H scattered pilots. The computation complexity of the new algorithm is further reduced by limiting the range of correlation...
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