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This paper deals with blind propagation channel estimation that should be a key feature for future agile waveforms. The proposed approach is based on high order statistics, inverse Fourier Transform and auto-deconvolution. The paper can be seen as a follow up to a previous work devoted to this subject [10]. It introduces an important improvement in the auto-deconvolution step based on a whitening...
This paper proposes low-complexity channel estimator for Unique Word (UW) MultiBand Orthogonal Frequency Division Multiplexing (MB-OFDM) based Ultra WideBand (UWB) communication systems. The proposed channel estimator is performed in two stages. The pre-FFT stage employs the Least Square (LS) estimation and smoothing technique to estimate the Channel Frequency Response (CFR). The post-FFT stage employs...
The residual BER — error floor, though useful and widely used metrics for the end-to-end digital radio transmission performance, provides no insight into the error-generating analog impairments (e.g. modulation inaccuracy, power amplifier compression, carrier recovery phase error, or I-Q cross-talk), which, however, are easy to identify by VSA tools such as constellation analysis. As the EVM analysis...
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