Generalised Array Manifold Model for Wireless Communication Channels with Local Scattering

NR 20140805
The authors propose the use of a generalised array manifold for parameterised spatial signature estimation in wireless communication channels with local scattering. The array manifold commonly used for point sources is generalised to include linear combinations of the nominal array response vectors and their derivatives. The motivation behind this idea is to obtain better estimates of the spatial signatures for direction of arrival (DOA) based signal waveform estimation. The estimators proposed exploit the orthogonality between the so-called noise and signal subspaces, leading to a separable solution for the derivative coefficients. As a result, a search is required for the DOAs only. For uniform linear arrays, the spatial signatures are shown to be approximately Vandermonde vectors with damped modes, and a closed-form estimator such as ESPRIT may be used in this case. Simulation examples are included to compare the signal estimation performance obtained using the proposed generalised manifold and the conventional array manifold.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Telekommunikation hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications hsv//eng
array signal processing
cellular radio
direction-of-arrival estimation
electromagnetic wave scattering
land mobile radio
linear antenna arrays
multipath channels
noise
radio links
radiowave propagation

Ottersten, Björn,1961-KTH,Signaler, sensorer och system(Swepub:kth)u120hb53 (author)
Swindlehurst, Andrew LeeDepartment of Electrical and Computer Engineering, Brigham Young University, Provo, UT 84602 USA (author)
KTHSignaler, sensorer och system (creator_code:org_t)

By the author/editor: Asztély, David; Ottersten, Björn ...; Swindlehurst, An ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Telecommunicatio ...

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