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Continuous distribution-based angle estimation method and device for improving estimation precision

A technology of angle estimation and accuracy, applied in direction finders using radio waves, radio wave direction/deviation determination systems, components of radio wave directors, etc., can solve the problems of unusable MUSIC/ESPRIT algorithms, estimated delay Problems such as high training sequence overhead and limited estimation accuracy have achieved good promotion and application prospects, overcoming high resource overhead and continuous angle estimation.

Active Publication Date: 2016-08-24
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

When there are radio frequency link constraints, the output of each antenna can only be processed by the channel estimation module in the digital domain after receiving and combining, so MUSIC / ESPRIT algorithms cannot be used
The estimation accuracy of the angle estimation technology based on the adaptive compressed sensing algorithm given in [4] is limited by the number of physical antennas, and the number of iterations required to complete the estimation is large, and the corresponding estimation delay and training sequence overhead are large

Method used

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  • Continuous distribution-based angle estimation method and device for improving estimation precision
  • Continuous distribution-based angle estimation method and device for improving estimation precision
  • Continuous distribution-based angle estimation method and device for improving estimation precision

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Embodiment Construction

[0035] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0036] The invention provides an angle estimation method and equipment based on continuous distribution which improves the estimation accuracy. Aiming at the millimeter-wave communication system under the large-scale uniform linear antenna array, the sparse structure characteristics of the millimeter-wave channel are fully exploited, and based on the compressive sensing technology, a training sequence-assisted angle estimation method is designed. By preprocessing the received signal at the receiving end, the angle information of the continuous distribution is decomposed into two parts: the nearest discrete angle sampling point estimation and the deviation estimation from the discrete angle sampling point in the angle domain, that is, the integer multiple sampling angle information Sampling angle information with fractional multiples. Appropriate trai...

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Abstract

The present invention provides a continuous distribution-based angle estimation method and device for improving estimation precision, and belongs to the broadband wireless communication technology and multi-antenna technology field. The device comprises a sending terminal codebook design module, a reception terminal codebook design module and a channel estimation module, and the channel estimation module comprises a pre-processing module and an angle iteration estimator. The pre-processing module decomposes the continuously distributed angle information into the integer multiple sampling angles and the decimal multiple sampling angles in an angle domain, and the angle iteration estimator uses the Turbo decoding principle for reference to realize the angle estimation. The angle estimation method comprises the sending terminal codebook design, the reception terminal codebook design and the channel estimation. The continuous distribution-based angle estimation method and device for improving the estimation precision of the present invention can realize the high-precision angle estimation on a smaller antenna number condition, enables the antenna deployment cost to be reduced greatly, and the algorithm complexity of the angle estimation and the processing time of a reception terminal to be reduced, is suitable for a single-diameter millimeter wave communication system under a large-scale antenna array, and has the very good popularization and application prospect.

Description

technical field [0001] The invention relates to a detection method for improving angle estimation accuracy, in particular to a method for estimating departure angle / arrival angle of a millimeter-wave antenna array, and belongs to the field of broadband wireless communication technology and multi-antenna technology. Background technique [0002] In order to meet the requirements of the next generation mobile communication system (5G) for high-speed data transmission rate and large capacity, it is necessary to find spectrum resources with larger transmission bandwidth and research transmission technologies with high spectral efficiency. The available transmission bandwidth of the millimeter wave frequency band can exceed 1GHz, which is a potential spectrum resource that provides a larger transmission bandwidth. Therefore, millimeter wave communication technology has broad development prospects. The communication frequency band of the millimeter wave band is high, and the signa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/12G01S3/14
CPCG01S3/12G01S3/14
Inventor 彭岳星韩灵怡付达赵慧左永锋王鹏
Owner BEIJING UNIV OF POSTS & TELECOMM
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