Resolution and Parameter Estimation of Non-ideally Sampled Pulse Signals

Xiuying CAO
Pengcheng ZHU

IEICE TRANSACTIONS on Communications   Vol.E97-B    No.3    pp.647-654
Publication Date: 2014/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E97.B.647
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
time delay estimation,  CLEAN algorithm,  Taylor series expansion,  CRLB,  

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Attenuated and delayed versions of the pulse signal overlap in multipath propagation. Previous algorithms can resolve them only if signal sampling is ideal, but fail to resolve two counterparts with non-ideal sampling. In this paper, we propose a novel method which can resolve the general types of non-ideally sampled pulse signals in the time domain via Taylor Series Expansion (TSE) and estimate multipath signals' precise time delays and amplitudes. In combination with the CLEAN algorithm, the overlapped pulse signal parameters are estimated one by one through an iteration method. Simulation results verify the effectiveness of the proposed method.