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Author Sommerkorn, Gerd ♦ Markus, L. ♦ Richter, Andreas ♦ Thomä, Reiner
Source CiteSeerX
Content type Text
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Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Experimental Ula Measurement Result ♦ Real Antenna Array ♦ Second Part ♦ First Part ♦ Uniform Linear Antenna Array ♦ High-resolution Doa Estimation ♦ Antenna Beam Pattern Measurement ♦ Channel Sounding ♦ Broadband Mimo Channel Sounder ♦ Typical Case Single Path Scenario ♦ Data Result ♦ High Resolution Direction-of-arrival ♦ Calibration Data ♦ Present Experimental Result ♦ Precision Measurement ♦ Crlb Plot ♦ Complex Path Weight ♦ Anechoic Chamber ♦ Path Scenario ♦ Spaced Coherent Path ♦ Minimum Achievable Estimation Variance ♦ Performance Degradation ♦ Performance Evaluation ♦ Evaluation Method ♦ Ula Example ♦ Azimuth Angle ♦ Performance Limit
Abstract Abstract: In the second part of this paper we present experimental results on the performance evaluation of uniform linear antenna arrays (ULA) for high resolution direction-of-arrival (DoA) estimation in channel sounding. The evaluation method is derived in the first part of this paper. It is based on the Cramer-Rao-Lower-Bound (CRLB) which is calculated from the calibration data of a real antenna array. This data results from a precision measurement in an anechoic chamber using a broadband MIMO channel sounder. For the ULA example, the CRLB determines the minimum achievable estimation variance of the complex path weight and the azimuth angle. The CRLB plots are given for the typical cases “single path scenario ” and “coherent two path scenario ” thus demonstrating the performance degradation for closely spaced coherent paths. Since the proposed method relies only on antenna beam pattern measurements, it can easily be applied to any real antenna array and clearly indicates the performance limits imposed by the array and its imperfections to high-resolution DoA estimation.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article