Abstract
An algorithm for direction angle of arrival(DOA) estimation and array calibration of signals from multiple mobile users in the CDMA systems and multi-path environment was presented. The main idea is that the algorithm employs code-matched filter and model of the inter-symbol interference and multiple-access interference exactly. The correlation matrices of the received signals before and after code-matched filtering were employed to eliminate the effect of the additive white Gaussian noise, and a new mathematical problem was created, a new maximum likelihood method based on the strong law of large number was derived for DOA estimation and array calibration. Computer simulation results prove that the algorithm is effective.
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Foundation item: Project supported by the National Defense Pre-research Foundation
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Shan, Zy., Zhou, Xl. & Zhang, Q. A new method to estimate DOA in CDMA system in multi-path environment. J Cent. South Univ. Technol. 13, 270–274 (2006). https://doi.org/10.1007/s11771-006-0122-5
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DOI: https://doi.org/10.1007/s11771-006-0122-5