Fundamental Limitations for DOA Estimation by a Sphere
Författare
Summary, in English
In this paper we consider fundamental limitations for DOA estimation with
arbitrary lossless antennas or antenna arrays inserted inside a sphere. Spherical
vector modes and their associated equivalent circuits and Q factor approximations
are employed as a general framework for the analysis. The
classical broadband matching theory by Fano is extended to a general multiport
S–parameter model of the antennas and fundamental bounds are given
for the scattering parameters with respect to bandwidth and electrical size
of the sphere. Finally, assuming a statistical signal model with Gaussian
receiver noise, the Cramer–Rao lower bound is used to derive fundamental
upper bounds for the performance of DOA estimation by a sphere.
arbitrary lossless antennas or antenna arrays inserted inside a sphere. Spherical
vector modes and their associated equivalent circuits and Q factor approximations
are employed as a general framework for the analysis. The
classical broadband matching theory by Fano is extended to a general multiport
S–parameter model of the antennas and fundamental bounds are given
for the scattering parameters with respect to bandwidth and electrical size
of the sphere. Finally, assuming a statistical signal model with Gaussian
receiver noise, the Cramer–Rao lower bound is used to derive fundamental
upper bounds for the performance of DOA estimation by a sphere.
Publiceringsår
2004
Språk
Engelska
Publikation/Tidskrift/Serie
Technical Report LUTEDX/(TEAT-7128)/1-26/(2004)
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Dokumenttyp
Rapport
Förlag
[Publisher information missing]
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Report number
TEAT-7128
Forskningsgrupp
- Electromagnetic theory