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

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...

AI Technical Summary

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

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