A estimation method for the direction of incoming wave of intelligent multiple sector antenna system

A direction of arrival and smart antenna technology, applied in the field of communication, can solve problems such as inaccurate DOA estimation, achieve the effect of improving accuracy and solving grating lobe problems
CN1953348AActive Publication Date: 2007-04-25SHANGHAI ULTIMATE POWER COMM TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI ULTIMATE POWER COMM TECH
Publication Date
2007-04-25

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Abstract

The invention relates to a method for evaluating incoming wave direction of multi-sector intelligent antenna system. Wherein, it comprises that (1), using spectrum evaluate method to initially evaluate the incoming wave direction of user, to obtain an incoming wave angle relative to the incoming power spectrum maximum value; (2), based on said angle, judging if user is at the edge of target sector, if it is, calculating out the powers of two sectors near the target sector; (3), if the area pointed by incoming wave angle is near the higher-power nearby sector, said angle is the final result, or else, searching the area reversed to the area pointed by incoming wave angle, to obtain the angle with maximum power spectrum in reversed area, as the final result. The invention can improve the accuracy of DOA evaluation.
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Description

technical field

[0001] The invention relates to the communication field, in particular to a method for estimating the direction of arrival (DOA estimating) of a multi-sector smart antenna system. Background technique

[0002] At present, the rapid growth of mobile users and the continuous improvement of wireless service requirements force the current mobile communication system to urgently solve the problem of how to further improve the system's spectrum utilization and increase the system capacity. The factors that inhibit the increase of the capacity of the wireless communication system and the continuous improvement of the transmission data rate are mainly concentrated in the following aspects: co-channel interference (CCI) caused by frequency reuse, multipath phenomenon, fading, multi-employment problem Le extension and delay extension .

[0003] Traditional methods to deal with the above problems mainly include modulation and demodulation technology, channel codec tech...

Claims

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