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For ARMAX models, a Latest-Estimation Based Hierarchical Recursive Extended Least Squares algorithm is presented in this paper. The basic idea is to make full use of the latest estimation, and combine this with the hierarchical idea. In the proposed algorithm, the estimates of the white noise information vector is updated by using the latest estimation. The convergence performance of the proposed...
Parabolic Radon transform (PRT) is one of the most effective methods to eliminate multiple. Based on model study and programming, the article shows the physical signification of FPRT firstly, then presents the theories and implementation processes about the forward and inverse parabolic Radon transform infrequency domain. It also discusses the aliasing in radon domain, the stability of radon transform,...
This work studies the performance of a data-driven reduced rank scheme for rapid timing acquisition in multiple access communications. Our results show that when only a limited amount of preamble bits are available, instead of the true second-order statistics (SOS), the reduced rank scheme provides reliable timing information. Exploiting the structure of the multiple access interference, the data...
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