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Robust jam suppression method for intelligent antenna

An interference suppression, smart antenna technology, applied in the direction of diversity/multi-antenna system, space transmit diversity, etc., can solve the problem of difficult to guarantee anti-interference performance, difficult to accurately solve the loading level, only considering positive loading and so on

Inactive Publication Date: 2013-05-22
XIAN UNIV OF POSTS & TELECOMM
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Problems solved by technology

In the existing technology, the diagonal loading technology is generally used to realize, but the traditional loading method only considers the positive loading, and the loading level is difficult to solve accurately
It is also difficult to guarantee the anti-interference performance, so the algorithm performance is difficult to achieve optimization

Method used

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  • Robust jam suppression method for intelligent antenna
  • Robust jam suppression method for intelligent antenna
  • Robust jam suppression method for intelligent antenna

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as Figure 1-Figure 3 As shown, a smart antenna robust interference suppression method includes the following steps:

[0030] Step 1) Determine whether there is interference in the data received by the array according to the signal and interference parameters.

[0031] Step 2) If there is no interference, use the robust beamforming algorithm with the least performance best (LSMI);

[0032] Step 2 can specifically be as follows:

[0033] a) For the LSMI beamforming algorithm, the robust beamforming problem when the steering vectors are mismatched is:

[0034] min w w H Rw s . ...

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Abstract

The invention discloses a robust jam suppression method for an intelligent antenna. The robust jam suppression method includes steps of 1), judging whether jam occurs in received array data or not according to signals and jam parameters; 2), acquiring the optimal vector W<LSMI> by a worst-case performance optimization robust beam forming algorithm [LSMI (loaded sample matrix inversion)] if jam does not occur in the received array data; and 3), acquiring the optimal vector w<LJC-LSMI> by a linear jam parameter constraint LSMI beam forming algorithm [LJC-LSMI (linear jam constraint-LSMI)] if jam occurs in the received array data. The robust jam suppression method has the advantage that the performance of each beam forming algorithm is optimized.

Description

technical field [0001] The invention belongs to the beamforming technology in the technical field of mobile communication, and relates to a robust interference suppression method for smart antennas, in particular to a beamforming device and method suitable for a smart antenna system in a communication system. Background technique [0002] With the development of mobile communication, smart antenna technology is also applied to multi-antenna mobile communication systems. The smart antenna uses digital signal processing technology to generate spatially directional beams, so that the main beam of the antenna is aligned with the direction of the desired user signal, and the side lobes or nulls are aligned with the direction of the interference signal, so as to effectively receive the desired mobile user signal and suppress or eliminate the useless interference signal. . [0003] When there is an error between the steering vector of the desired signal and its true value, the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
Inventor 杨洁刘聪锋张煜朱燕王龙赵梓越简康谢鑫袁超鹏
Owner XIAN UNIV OF POSTS & TELECOMM
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