Method and system of 60 GHz beam forming based on double-layer circular array

Abstract

The invention discloses a method and a system of 60 GHz beam forming based on a double-layer circular array. The method of the beam forming comprises codebook designing and training steps. All Quasi-omni modes are obtained by carrying out Quasi-omni codebook designing. An optimum Quasi-omni pair is obtained by matching one by one. Sector codebook designing and corresponding training steps are carried out in the range of the optimum Quasi-omni pair to obtain an optimum Sector pair. Sector codebook designing and corresponding training steps are carried out in the range of the optimum Sector pair to obtain an optimum Beam pair. The three modes are enabled to generate corresponding codebooks, an antenna pattern is enabled to be same in sizes, even in distribution, clear in directing, and an antenna beam with high precision, high gain and small gain loss is searched in a short time, the robustness of relevant phase shifting errors of the circular array codebooks is strong, and the system is stable.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a 60 GHz beamforming method and system based on a double-layer circular antenna array. Background technique [0002] In 2003, the IEEE released a new standard IEEE 802.15.3, "WPAN's Wireless Media Access Control (MAC) and Physical Layer (PHY) Specification", which first proposed the wireless communication that realizes Gigabit rate transmission in a short distance range. system. In order to achieve a transmission rate exceeding 5Gbps in the 60GHz frequency band, the IEEE 802.15.3c standard in 2009 made further supplementary improvements to the IEEE 802.15.3 standard. The standard defines three physical layer modes and defines one The purpose of the new beamforming protocol is to increase the transmission range of the system. [0003] The 60GHz millimeter wave short-range wireless communication technology has shown great potential in today's shortage of spectrum resource...

AI Technical Summary

Problems solved by technology

The 60GHz mmWave bandwidth is large and flexible, but the biggest challenge it faces is the high path loss

[0025] 3. The vertical axis coverage of the three-dimensional antenna pattern is still flawed, and some beams diverge along the z-axis direction, and the direction is not clear;

[0026] 4. The gain loss due to codebook limitation is large;

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