Title :
Multipath signals tracking for frequency hopping systems
Abstract :
A non-digitized method based on correlation measurement is proposed for tracking multipath frequency hopping (FH) signals. By using the cross correlation of the received signals of two receiving elements and the power at each element in different hops, a nonlinear least square objective function is formulated to estimate the multipath directions. The Gauss-Newton method is applied to track the slowly changing directions. Only the power of the transmitted signal is required as a prior knowledge in the proposed method, and it is easy to implement because of its simple structure. Simulation results show the performance of the method.
Keywords :
Newton method; correlation methods; frequency hop communication; least squares approximations; multipath channels; nonlinear estimation; time-varying channels; tracking; FH signals; Gauss-Newton method; correlation measurement; cross correlation; frequency hopping systems; multipath frequency hopping signals; multipath signal tracking; nondigitized method; nonlinear least square objective function; performance; receiving elements; slowly changing directions; transmitted signal power; Antenna arrays; Covariance matrix; Delay effects; Frequency estimation; Frequency measurement; Least squares methods; Power engineering and energy; Power engineering computing; Radar tracking; Sensor arrays;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
Print_ISBN :
0-7803-8255-2
DOI :
10.1109/VETECS.2004.1387917
