Broadband interference suppression device and suppression method based on space-time power inversion array

A broadband interference and suppression device technology, which is applied in the field of signal processing, can solve problems such as unfavorable engineering implementation, poor real-time performance of algorithms, and inability to run at high speed, so as to achieve the effect of increasing the degree of freedom, increasing the speed of interference suppression, and increasing the bandwidth

Active Publication Date: 2021-11-09
NAVAL UNIV OF ENG PLA
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Problems solved by technology

All have disadvantages such as poor real-time performance of the algorithm, incapability of high-speed pipeline operation, and unfavorable engineering

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  • Broadband interference suppression device and suppression method based on space-time power inversion array
  • Broadband interference suppression device and suppression method based on space-time power inversion array
  • Broadband interference suppression device and suppression method based on space-time power inversion array

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples.

[0048] The broadband interference suppression device based on the space-time power inversion array of the present invention includes a space-time two-dimensional power inversion array structure and a retiming delay minimum mean square filter (TF-RDLMS).

[0049] Among them, such as figure 1 The space-time two-dimensional power inversion array structure shown is composed of M array elements, the first array element is set as a reference array element, and the other M-1 array elements are weight array elements, and the weight of the reference array element is always 1 , each weight array element has N unit delayers, and each unit delayer has a complex weight, so that each weight array element constitutes an array element FIR filter. The received signals of M array elements are respectively denoted as x 0 (n), x 1 (n),...,x M-1 (n), wh...

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Abstract

The invention provides a broadband interference suppression device and suppression method based on a space-time power inversion array. The broadband interference suppression device comprises a space-time two-dimensional power inversion array structure and a retiming delay minimum mean square filter, the space-time two-dimensional power inversion array structure is composed of M array elements, the first array element is set as a reference array element, and the other M-1 array elements are set as weight array elements; the retiming delay minimum mean square filter comprises (M-1) groups of weight processing modules, two unit delayers, a first summator, a unit delayer and a second summator, a plurality of delay units are added behind each antenna array element, so that an FIR (Finite Impulse Response) filter is formed behind each array element, the array has certain frequency resolution capability, and the degree of freedom of the power inversion array is greatly improved by increasing the order of the FIR filter, so that the bandwidth of interference suppression is effectively improved. And the total delay time of the time domain transverse filter is greater than the maximum multipath propagation delay, so that interference suppression in a multipath environment can be realized.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a broadband interference suppression device and suppression method based on a space-time power inversion array. Background technique [0002] Wireless communication stations are widely used in military and civilian fields such as field expeditions, emergency relief, and naval and aircraft communications. They have the advantages of stable signals and high safety, and are also important equipment for long-distance line-of-sight communications. However, in a complex electromagnetic environment, communication stations are susceptible to multi-pattern interference from co-platform transmitters or enemy jammers, and the communication robustness is poor. Especially in the spread spectrum communication system, it is necessary to suppress the broadband interference signal within the spread spectrum bandwidth. [0003] In order to solve the same-frequency broadband interference...

Claims

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Application Information

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IPC IPC(8): H04L25/03
CPCH04L25/03057H04L2025/03636
Inventor 吴灏葛松虎李亚星郭宇邢金岭孟进谢明亮
Owner NAVAL UNIV OF ENG PLA
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