A stochastic channel model for line-of-sight (LoS) street microcell scenarios in dense urban areas is proposed. The scattering power distribution (SPD) in the channel seen from the mobile terminal (MT) based on the physical phenomenon is obtained. The coefficients of the distribution are derived by approximation to the measurements performed in urban street microcell scenarios. The azimuth-powe...

Dark matter currents in the large-scale structure give rise to gravitomagnetic terms in the metric, which affect the light propagation. Corrections to the weak lensing power spectrum due to these gravitomagnetic potentials are evaluated by perturbation theory. A connection between gravitomagnetic lensing and the integrated Sachs-Wolfe (iSW) effect is drawn, which can be described by a line-of-s...

Extraction of the CMB (Cosmic Microwave Background) angular power spectrum is a challenging task for current and future CMB experiments due to the large data sets involved. Here we describe an implementation of MASTER (Monte carlo Apodised Spherical Transform EstimatoR) described in Hivon et al. (2002) which exploits the destriping technique as a mapmaking method. In this method a noise estimat...

We present measurements of anisotropy in the cosmic microwave background (CMB) from the first season of observations with the Degree Angular Scale Interferometer (DASI). The instrument was deployed at the South Pole in the austral summer 1999–2000, and we made observations throughout the following austral winter. We present a measurement of the CMB angular power spectrum in the range 100 < l < ...

We investigate the coexistence of underlay spectrum sharing in cell-free massive multiple-input multiple-output (MIMO) systems. A primary system with geographically distributed access points (P-APs) serves a multitude users (PUs), while secondary large number (SUs) same primary/licensed by exploiting sharing. To mitigate co-channel interference inflected at PUs, stringent transmit power constra...

We present an angular power spectrum analysis of the 2 Micron All Sky Survey (2MASS) full release extended source catalogue. The main sample used includes 518 576 galaxies below an extinction-corrected magnitude of Ks =13.5 and limited to |b| > 20◦. The power spectrum results provide an estimate of the galaxy density fluctuations at extremely large scales, r∼ 1000 h −1 Mpc. We compare this with...

We study the possibility for an observational detection of oscillations due to baryons in the matter power spectrum and suggest a new cosmological test using the angular power spectrum of halos. The standard rulers of the proposed test involve overall shape of the matter power spectrum and baryon oscillation peaks in projection, as a function of redshift. Since oscillations are erased at non-li...

Based on the definition of the instantaneous frequency (signal phase derivative) as a local moment of the Wigner distribution, we derive the relationship between the instantaneous frequency and the derivative of the squared modulus of the fractional Fourier transform (fractional Fourier transform power spectrum) with respect to the angle parameter. We show that the angular derivative of the fra...

Isotropic Gaussian random fields on the sphere are characterized by Karhunen–Loève expansions with respect to the spherical harmonic functions and the angular power spectrum. The smoothness of the covariance is connected to the decay of the angular power spectrum and the relation to sample Hölder continuity and sample differentiability of the random fields is discussed. Rates of convergence of ...