In this paper we propose an improved MUSIC (Multiple Signal Classification) algorithm applicable for direction of arrival (DOA) estimation of coherent signals in the presence of one-dimensional uniform linear array (ULA), which is based on Toeplitz matrix theory and Fourth-order-cumulants (Foc). In the signal model, a new Toeplitz construction method combining SVD (singular value decomposition)...

The spatial smoothing-based and matrix reconstruction-based decorrelation algorithms are widely used to realize the accurate direction-of-arrival (DOA) estimation with coexistence of both uncorrelated coherent sources. However, these methods apply only traditional uniform linear array (ULA), which manifold is a Vandermonde structure. In this paper, achieve DOA mixed signals on coprime array, de...

Sparse linear arrays, such as co-prime and nested arrays, can identify up to O(M) sources with only O(M) sensors by using co-array based MUSIC. We conduct analytical performance analysis of two coarray based MUSIC algorithms, namely the direct augmentation based MUSIC, and the spatial smoothing based MUSIC. In addition, we analyze the Cramér-Rao bound for sparse linear arrays, and show that for...

Beamforming has been an area of interest for a lot research work as the multiantenna system become important topic in wireless communication. While both theoretical, well real-time practical implementation techniques beamforming have extensively researched, existing mainly focus on obtaining peak performance fastest and most accurate way possible usually ignore applications providing improved w...

This paper deals with joint adaptive radar detection and target bearing estimation in the presence of mutual coupling among array elements. First all, a suitable model signal received by multichannel is developed via linearization procedure Uniform Linear Array (ULA) manifold around nominal looking direction together use symmetric Toeplitz structured matrices to represent effects. Hence, Genera...

The support of high spectral efficiency MIMO spatialmultiplexing communication in OFDM-based WLAN systems conforming to IEEE 802.11n standard requires the design and use of compact antennas and arrays with low correlation ports. For this purpose, compact space-multimode diversity provisioning stacked circular multimode microstrip patch antenna arrays (SCP-ULA) are proposed in this paper and the...

antenna structures with low side lobe levels are normally the main goal during antenna design. in this paper, a new method for reduction of radiation pattern side lobe level in phased array antenna with uniform and non-uniform weighting is presented. in this method, by changing the array elements weight or adding several elements, such as slc technique, the pattern with low side lobe level can ...

A uniform linear array (ULA) or a multi-element planar composed of arrays is the main applied research for direction-of-arrival (DOA) estimation in signal processing. In recent years, circular (UCA) getting more attention because its consistent azimuthal beam resolution, but DOA algorithm UCA complex and difficult to implement. To solve this problem, positioning method based on virtual interpol...