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This paper proposes a maximum eigenvector based weighted non-coherent receiver (MEV-WNCR) for impulse radio ultra-wideband (IR-UWB) systems with pulse position modulation (PPM). Capitalizing on the SNR maximization criterion, we derive the optimal combining weights for the MEV-WNCR as the maximum eigenvector of the received signal sample covariance matrix. Unlike the conventional WNCR, the a priori...
In this paper, an adaptive MMSE channel estimation method is proposed for UWB-OFDM system. As we known, the MMSE algorithm is dependent on the auto-correlation of the known signals and the cross-correlation between the known signals and the signals to be estimated. These parameters are difficult to obtain in practice, because it needs a long-term statistic at the cost of huge complexity and time delay...
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