Channel mismatch compensation for space-time adaptive processors
Channel mismatch compensation for space-time adaptive processors
Mismatches in the response of the components used in the analogue front-ends of adaptive beamformers can reduce their ability to produce deep nulls against broadband interferers. These mismatches can be removed through a process of calibration performed at start-up and, if required, on a regular basis to track changes in the component psila s response due to environmental changes. In this paper a hardware efficient scheme for compensating for channel mismatches is proposed based on pre-equalization of each channel using frequency domain equalization. The effectiveness of the proposed scheme is simulated and the improvement in broadband nulling is demonstrated on a hardware implementation of an adaptive beamformer.
7 pp.-
Tisdale, N.
d24f820b-500c-4631-80b3-6e88d52b7c43
Kazmierski, T.
a97d7958-40c3-413f-924d-84545216092a
Brooks, D.
4e6fdec5-14bb-4e8e-805f-ef09976328c4
2008
Tisdale, N.
d24f820b-500c-4631-80b3-6e88d52b7c43
Kazmierski, T.
a97d7958-40c3-413f-924d-84545216092a
Brooks, D.
4e6fdec5-14bb-4e8e-805f-ef09976328c4
Tisdale, N., Kazmierski, T. and Brooks, D.
(2008)
Channel mismatch compensation for space-time adaptive processors.
MILCOM 2008 - 2008 IEEE Military Communications Conference, .
Abstract
Mismatches in the response of the components used in the analogue front-ends of adaptive beamformers can reduce their ability to produce deep nulls against broadband interferers. These mismatches can be removed through a process of calibration performed at start-up and, if required, on a regular basis to track changes in the component psila s response due to environmental changes. In this paper a hardware efficient scheme for compensating for channel mismatches is proposed based on pre-equalization of each channel using frequency domain equalization. The effectiveness of the proposed scheme is simulated and the improvement in broadband nulling is demonstrated on a hardware implementation of an adaptive beamformer.
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Published date: 2008
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EEE
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Local EPrints ID: 269801
URI: http://eprints.soton.ac.uk/id/eprint/269801
PURE UUID: 7034c1e3-3ca4-473e-ba85-59690bdc63ef
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Date deposited: 21 Apr 2010 07:46
Last modified: 09 Jan 2022 07:09
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Author:
N. Tisdale
Author:
T. Kazmierski
Author:
D. Brooks
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