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Anti-interference system-on-chip and method of intelligent antenna based on FPGA (Field Programmable Gate Array)

A smart antenna and system-on-a-chip technology, applied in diversity/multi-antenna systems, baseband system components, shaping networks in transmitters/receivers, etc., can solve problems such as inability to parallelize, low real-time processing speed, etc., to overcome hardware The effect of high cost, improved stability and adjustability, and improved data processing speed

Inactive Publication Date: 2011-08-31
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, solve the problem that the real-time processing speed of the smart antenna anti-jamming system based on the DSP platform is not high and cannot be parallelized, propose a FPGA-based smart antenna anti-jamming system-on-chip, and adopt a pipeline structure Realize the method of iterative inverse optimization to realize fast and high-precision processing of sampled data

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  • Anti-interference system-on-chip and method of intelligent antenna based on FPGA (Field Programmable Gate Array)
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  • Anti-interference system-on-chip and method of intelligent antenna based on FPGA (Field Programmable Gate Array)

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[0030] The system of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, the system of the present invention includes a receiving antenna, a multi-channel receiver, an A / D converter, a digital orthogonal interpolation module, a covariance matrix module, a complex positive definite Hermitian matrix to a real symmetric matrix module and a covariance matrix inversion module . The receiving antenna is a multi-element array antenna for receiving space radio frequency signals. The number of array elements is determined by the receiver output gain required by the system. In this embodiment, the number N of array elements is selected as 4. The receiving antenna is connected to the multi-channel receiver through a coaxial cable. The multi-channel receiver converts the radio frequency signal received by the antenna array into an intermediate frequency analog real signal through an analog down-converter...

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Abstract

The invention provides an anti-interference system-on-chip and method for an intelligent antenna based on an FPGA (Field Programmable Gate Array). The anti-interference system-on-chip for the intelligent antenna based on the FPGA comprises a receiving antenna, a multi-channel receiver, an A / D (Analog-to-Digital) converter, a digital orthogonal interpolation module, a covariance matrix module, a complex positive definite Hermite matrix to real symmetric matrix module and a covariance matrix inversion module. In the invention, the anti-interference method for the intelligent antenna based on the FPGA comprises the following specific steps of: 1, data receiving; 2, digital orthogonal interpolation; 3, covariance matrix data calculation; 4, complex positive definite Hermite matrix to real symmetric matrix; and 5, covariance matrix inversion. By using the invention, the real-time and fast anti-interference of the intelligent antenna is realized under the situation that interference exists in a communication channel, and thus, the problems of poor instantaneity, high hardware cost, low integration degree and incapability of parallel processing in an anti-interference system for the intelligent antenna based on (Digital Signal Processing) are solved.

Description

technical field [0001] The present invention relates to the field of mobile communication technology, and further relates to a field programmable gate array (Field Programmable Gate Array, FPGA)-based smart antenna anti-jamming system on chip, and a method for implementing smart antenna anti-jamming, which are used to solve the problem of user interference in mobile communication. The problem of signal interference with each other improves spectrum utilization and system capacity. Background technique [0002] At present, the system platform based on the smart antenna anti-jamming system mostly adopts Advanced RISC Machines chips (ARM) and digital signal processing (Digital Signal Processing, DSP) chips. On the system platform, because the covariance matrix inversion (SMI) algorithm is simple to implement and the design cost is low, it is widely used in the field of mobile communication technology. [0003] Ren Lei, Wang Yongliang, Chen Jianwen, Chen Fengbo and others discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/02H04L25/03
Inventor 陶海红刘影苏磊周游王青计茹廖桂生曾操
Owner XIDIAN UNIV
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