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Partitioning concurrence based adaptive digital beamforming method and implementing device thereof

A digital beam and adaptive technology, applied in the direction of adaptive network, electrical components, impedance network, etc., can solve the problem of low efficiency of iterative processing

Inactive Publication Date: 2014-12-17
NANJING UNIV OF SCI & TECH
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Problems solved by technology

Document 2 (Sub-array RLS adaptive algorithm.IEEE Electronics letters, 1999,35(13):1061-1062) discloses an asynchronous RLS-based block parallel algorithm, which requires more weight coefficients to be updated per iteration than ERLS M-2 beats (M is the number of blocks), the iteration processing efficiency is low

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  • Partitioning concurrence based adaptive digital beamforming method and implementing device thereof
  • Partitioning concurrence based adaptive digital beamforming method and implementing device thereof
  • Partitioning concurrence based adaptive digital beamforming method and implementing device thereof

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Embodiment 1

[0094] Under the environment of Matlab, the block-parallel area array algorithm is simulated. Assuming a uniform planar array of 16×16, the array element antenna pattern is isotropic, and the array element spacing is half a wavelength. Assumption: the received data contains additive white Gaussian noise; the signal comes from (0°,0°) direction, the signal-to-noise ratio (SNR) is 0dB; the interference signal is irrelevant to the signal, and the interference-to-noise ratio (INR) is 30dB; The dimensions of the sub-blocks are equal and N i =32, the total number of blocks M=8. Pick Considering randomness, all simulation results are obtained by averaging the results of 100 independent runs. In order to achieve good sidelobe performance, a 30dB Dolph-Chebyshev constraint is added to the algorithm.

[0095] Figure 3(a) is the three-dimensional pattern of the three interference signals from (-10°, 10°), (10°, 25°) and (30°, -15°) directions respectively; in the three interference ...

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Abstract

The invention discloses a partitioning concurrence based adaptive digital beamforming method and an implementing device thereof. The partitioning concurrence based adaptive digital beamforming method includes (1) transforming two-dimensional baseband data received by a digital array into one-dimensional data vector; (2) partitioning the one-dimensional data vector and corresponding weight vector thereof and a constraint matrix into same M blocks, subjecting the M blocks to parallel processing by M processing modules to obtain M block processing results and directly obtain baseband data output by a comprehensive processing module after adaptive digital wave beams are formed and relevant parameters required for next calculation; (3) repeating according to the step (2) to obtain an adaptive iteration updating structure. The implementing device comprises N unit antennas and corresponding channel receivers and analog / digital converters and the M parallel processing modules and the comprehensive processing module. The partitioning concurrence based adaptive digital beamforming method and the implementing device thereof have the advantages that partitioning is flexible, little mutual information among the blocks is generated, operand of adaptive digital beamforming is effectively reduced and transmission and interface pressure of data convergence is alleviated.

Description

technical field [0001] The invention belongs to the field of adaptive array signal processing, in particular to a block-parallel adaptive digital beam forming method and a realization device thereof. Background technique [0002] Adaptive digital beamforming is a new technology developed on the basis of array antenna and signal processing. Its basic idea is to control the direction function of the antenna array by weighting the data received by the antenna array elements, so that the antenna array pattern A high gain is formed in the direction of the desired signal, and a deep null is generated in the direction of the interference signal to achieve the purpose of spatial filtering. The adaptive digital beamforming algorithm can adaptively adjust the weighting factors of each array element according to the changes of the signal and interference environment, so as to achieve the purpose of suppressing interference while ensuring the desired signal direction gain remains unchan...

Claims

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Application Information

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IPC IPC(8): H03H21/00
Inventor 盛卫星马晓峰黄飞张仁李韩玉兵张健
Owner NANJING UNIV OF SCI & TECH
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