A modification of the classic Dolph-Chebyshev low sidelobe array pattern design is introduced, which allows the adjustment of the mainlobe’s width relatively freely and independently from the sidelobe level. In order to illustrate the advantages of the tool provided by the new design method, its application to Uniform Linear Arrays (ULA’s) and Uniform Circular Arrays (UCA’s) is discussed. It is...

This article applies PARAllel profiles with LINear Dependencies (PARALIND) model to analyze identifiability of parameter estimation in the presence of incoherent multipath via uniform linear array (ULA). New identifiability results are derived based on the uniqueness property of PARALIND model and structure property of ULA. With the strong properties of trilinear model, the proposed identifiabi...

In this work we propose space-multimode (SM-SCP-ULA) space-multimode-polarization stacked circular patch uniform linear antenna arrays (SMP-SCP-ULA) for deployment in size-constrained access points, modems and end-user terminal equipments of IEEE 802.11n MIMO-OFDM WLAN systems at 5.8 GHz. The performance gain of higher-order modal SMP-SCP-ULA in terms of spatio-modal power correlations, ergodic...

It is well known that to perform accurate Direction of Arrivals (DOA) estimation using algorithms like MUSIC (MUltiple SIgnals Classification), antenna array data must be calibrated to match the theoretical model upon which DOA algorithms are based. This paper presents experimental measurements from independent sources obtained with a linear antenna array and proposes a novel calibration techni...

In this paper, we have proposed a hybrid transmission scheme which involves beam selection and antenna selection techniques over a MIMO system operating with vary antenna array. Optimal subset of transmit antennas are selected via fast successive selection scheme designed to optimize the target eigenbeam. Optimal eigenbeams corresponding to the largest singular values of the new MIMO channel fo...

In a more realistic indoor environment we demonstrate the use of the ray tracing method to predict the capacity of a multiple input multiple output(MIMO) indoor wireless communication systems. The channel response for 4 by 4 MIMO systems located inside an office environment operating at 5.2 GHz is constructed by using Wireless InSite, ray tracing simulation tool. The uniform linear array(ULA) a...

A computationally efficient method is proposed for estimating the directions-of-arrival (DOAs) of signals impinging on a uniform linear array (ULA), based on partial a priori knowledge of signal sources. Unlike the classical MUSIC algorithm, the proposed methodmerely needs the forward recursion of themultistageWiener filter (MSWF) to find the noise subspace and does not involve an estimate of t...

The problem of spatial signature estimation using a uniform linear array (ULA) with unknown receiver gain and phase responses is studied. Sufficient conditions for identifying the spatial signatures are derived, and a closed-form ESPRITlike estimator is proposed. The performance of the method is investigated by means of simulations and on experimental data collected with an antenna array in a s...

In a compact multiple-input-multiple-output (MIMO) communication systems, the channel capacity of a traditional 4-element uniform linear array (ULA) will decrease rapidly with the increment of the mean angle of arrival (AoA) of the incident waves. We will show first in this paper that this channel capacity decrement is caused by the antenna radiation pattern distortion, which owes to the so-cal...

Difference co-array can be constructed by using Khatri-Rao (KR) product, which can increase the degrees of freedom (DOF) significantly. Combined with fourth order cumulants, the KR product can be used to constructed fourth order difference co-array. The fourth order difference co-array of a four level nested array contains a uniform linear array (ULA), however, its second order difference co-ar...