FBFN correction method for beam pointing error of LMDS system and a device thereof
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United States of America Patent
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N/A
Issued Date -
Oct 9, 2003
app pub date -
Aug 26, 2002
filing date -
Mar 26, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention presents a fuzzy basis function network (FBFN) processing device for the beam pointing error correction of the local multipoint distributed system (LMDS). The beam pointing error caused by wind force can affect the performance of the local multipoint distributed system (LMDS). The correction device uses multi-beam planar array antenna to obtain the signal direction-of-arrival (DOA) of a base station and uses fuzzy basis function network (FBFN) algorithm, which includes thirteen normalized Gaussian membership functions and thirteen rules, to estimate the beam pointing error. The simulation results show that the presented FBFN processing device has better performance in transient response, convergence time and steady state value of the averaged square error than the conventional beam pointing error correction devices.
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