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An improved algorithm based on the symmetric uniform linear array (ULA) and the second-order statistics (SOS) is proposed to cope with the mixed far-field and near-field sources localization problem. The direction-of-arrivals (DOAs) and powers of far-field sources can be firstly estimated from the MUSIC spectral function. Then, an oblique projection technique is adopted to eliminate the obtained far-field...
In the paper, the problem of broadband near-field source localization is investigated. A novel method for joint range and bearing estimation of broadband near-field sources is proposed using coherent signal subspace method (CSM) and fourth-order cumulant. The broadband of near-field source is divided into multiple narrowband frequency bins. Coherent focusing of the received data over multiple frequency...
A vast majority of the existing eigen decomposition based localization schemes invoke the plane-wave assumption when estimating the localization parameter of multiple sources. When the sources are located close to the array, these techniques may no longer perform satisfactorily. Most modulated communication signals exhibit cyclostationarity. In this paper a new algorithm for near-field sources localization...
In the paper, fourth-order cumulant is applied in joint two-dimensional (2-D) angle and delay estimation in order to suppress Gaussian colored noise and improve resolution for wireless multipath channel. Based on a special plane antenna array, a novel TST-cumulant method is proposed to joint estimation multipath channel parameters of azimuth, elevation and time delay. The proposed algorithm is based...
We propose an effective two dimensional (2-D) direction-of-arrival (DOA) estimation algorithm for the synchronous DS-CDMA systems in multi-user and multi-path channels. The algorithm can be applied in CDMA base station receiver with arbitrary array antenna. In order to effectively suppress multiple access interference (MAI), multiple parallel code-matched filters and a decorrelating multiuser detector...
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