The microwave band fixed wireless access (FWA) systems are expected to operate in non-line-of-sight (NLOS) environments in order to loosen the restrictions on antenna installation at a subscriber station (SS). In addition, it is planning to adopt array antenna at a SS in the next generation FWA. In this case, Direction of arrival (DOA) is a one of the important propagation parameters. We carrie...

Direction-of-arrival (DOA) estimation is an important problem in many applications such as communication and navigation. Many methods have been presented for this problem. The Maximum Likelihood (ML) is one of the good solutions. But, in traditional algorithms for ML Nonetheless, the computational load is very heavy and multivariate nonlinear maximization problem is serious. To deal with these ...

This communication deals with high-resolution direction finding using higher-order cumulants of the array data. Two 4th-order cumulant-based matrices are considered : the diagonal cumulant slice and the contracted quadricovariance. They are evaluated in the context of DOA estimation using "subspace" techniques. To this purpose, we introduce an original methodology to derive the closed form of a...

We consider array geometries whose direction-of-arrival (DOA) estimation performance is isotropic. An isotropic array is one whose Cramér–Rao bound (CRB) on the DOA of a single source is uniform for all angles. For both planar arrays and volume arrays we derive necessary and sufficient conditions on array element locations so that the array is isotropic. We also present several designs of isotr...

This paper presents a new approach for localizing mobile phone users using the promising technique of stratospheric platform (SP) flying at altitudes 17–22 km high and a suitable Direction-ofArrival technique (DOA). The proposed technique provides information about accurate locations for mobile stations — through high resolution DOA technique — which is very important for traffic control and re...

Doa merupakan salah satu rangkaian ibadah yang mempunyai keterkaitan dengan kesempurnaan iman seorang muslim. Dalam Islam doa sangatlah banyak, agar muslim dapat mengingat doa-doa harian mereka dibutuhkan media memfasilitasinya. Media mudah digunakan dan hampir setiap orang memilikinya adalah smartphone. Saat ini aplikasi pada smartphone sudah banyak dikembangkan, tetapi berdasarkan survei obse...

SRm160 is an SR-like protein implicated in multiple steps of RNA processing and nucleocytoplasmic export. Although its biochemical functions have been extensively described, its genetic interactions and potential participation in signaling pathways remain largely unknown, despite the fact that it is highly phosphorylated in both mammalian cells and Drosophila. To begin elucidating the functions...

The Multiple Signal Classification (MUSIC) algorithm is a powerful technique for determining the Direction of Arrival (DOA) of signals impinging on an antenna array.The algorithm is serial based, mathematically intensive, and requires substantial computing power to realize in real-time.Recently, multi-core processors are becoming more prevalent and affordable.The challenge of adapting existing ...

Besides the undirected environmental noise, the surrounding interference also brings great challenges to the robust DOA estimation of the speech source. As conventional DOA estimation methods always assume an undirected noise model, they usually cannot perform reliably when the strong inference exists. In this paper, we propose a novel interference robust DOA estimation method, which is based o...