Options
2000
Conference Paper
Titel
Robust beamforming for quadratic antenna arrays in picocellular mobile environments
Abstract
Smart antennas may be used in future mobile communication systems in order to increase the system capacity and system performance. We propose a new robust constrained beamforming algorithm for two dimensional linear antenna arrays. The algorithm is based on the product of two basic patterns which control the azimuth- and elevation-plane separately. The azimuth is constructed by using a one-dimensional directivity controlled constrained beamformer and the elevation is constructed by using a phased array. In contrast to two dimensional constrained beamforming algorithms, where the existence of a beam pattern is not always guaranteed, for an M*N element array, this approach leads to an optimum solution for N-1 arbitrary positions of the nulls. Furthermore, the constructed beam pattern provides maximum directivity, which leads to a minimum bit error rate in asynchronous CDMA systems.
Language
English
Tags
-
adaptive antenna arrays
-
antenna phased arrays
-
antenna radiation patterns
-
array signal processing
-
code division multiple access
-
directive antennas
-
linear antenna arrays
-
picocellular radio
-
robust beamforming
-
quadratic antenna arrays
-
picocellular mobile environments
-
smart antennas
-
future mobile communication systems
-
robust constrained beamforming algorithm
-
two dimensional linear antenna arrays
-
2d linear antenna arrays
-
azimuth-plane
-
elevation-plane
-
1d directivity controlled constrained beamformer
-
one-dimensional directivity controlled constrained beamformer
-
phased array
-
beam pattern
-
minimum bit error rate
-
asynchronous cdma systems