DOA and TOA of Network Adaptive Smart Antennas

摘要

Adaptive smart antennas seem to be a promising way to increase the capacity of transmission systems. They are able to reduce the interference inherent in multipath, improve the signal to noise ratio, and introduce the reuse of frequencies. In this research, we studied the application of Matrix Pencil smart antenna systems for three network configurations: linear, circular and rectangular. We have developed an algorithm for estimating angle and delay based on Matrix Pencil method in order to eliminate multipath for linear network antenna. The Least Mean Squares (LMS) algorithm is applied for to direct the radiation pattern of the antenna toward desired signal. For the circular array, we chose the patch antenna circular segment as the basis for its integration in smart antenna systems. The designed patch antenna resonates in C-band [4–8] GHz at three frequencies. Then the DOA and TOA of the desired signal and interfering are accurately determined with the Matrix Pencil method.