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Omnidirectional beamforming design method based on complementary sequences under uniform rectangular array

A technology of beamforming and rectangular array, which is applied in the field of omnidirectional beamforming design based on complementary sequences, can solve problems such as lack of research work

Active Publication Date: 2019-03-19
FUDAN UNIV
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Problems solved by technology

[0003] Aiming at the above problems, the existing research work has almost no

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  • Omnidirectional beamforming design method based on complementary sequences under uniform rectangular array
  • Omnidirectional beamforming design method based on complementary sequences under uniform rectangular array
  • Omnidirectional beamforming design method based on complementary sequences under uniform rectangular array

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Embodiment Construction

[0081] The present invention is further described below through specific embodiments.

[0082] As an embodiment, the present invention uses a computer to simulate the beam pattern of a beamforming matrix based on a complementary sequence set under an 8×16 uniform rectangular array, such as Figure 5 shown. It can be seen that they all have the same signal energy distribution in space, which meets the requirement of omni-directional beam coverage in the design.

[0083] The present invention also simulates the bit error rate performance achieved by the system when the space-time block coding adopts Alamouti coding. Considering a 2×16 uniform rectangular array, the two beamforming matrices obtained by formulas (20) and (23) are rank-2. The other two comparison methods are the ZC-based scheme (using two Zadoff-Chu sequences for the Kronecker product to obtain the beamforming matrix) and BGM (broadbeam generation method, refer to [2]). The simulation was carried out for 10 5 M...

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Abstract

The invention belongs to the technical field of common signal transmission, and particularly relates to an omnidirectional beamforming design method based on complementary sequences under a uniform rectangular array. The invention mainly aims to solve the problem of beamforming design of cell-level full coverage of common signal downlink transmission. The invention provides two omnidirectional beamforming design schemes for a large scale antenna base station equipped with the uniform rectangular array, wherein one is based on a complementary sequence set, and the other is based on a fully complementary code. Both schemes can achieve a fully smooth beam pattern in various directions, and have excellent features of low complexity and closed-form solutions. Moreover, the most code words of the complementary sequence set and the fully complementary code have constant model characteristics, so that the entire beamforming scheme can be efficiently implemented using only analog domain beamforming architectures, thereby effectively improving hardware efficiency.

Description

technical field [0001] The invention belongs to the technical field of public signal transmission, and in particular relates to a complementary sequence-based omnidirectional beamforming design method. Background technique [0002] Large-scale antennas are one of the key technologies for realizing 5G commercial use. After the scale of the antenna increases, in order to facilitate productization, it is more inclined to use a uniform rectangular array. For base stations deploying uniform rectangular arrays, achieving omni-directional transmission of public signals and full cell coverage is one of the key factors to improve overall network performance. [0003] Aiming at the above problems, there is almost no existing research work. Most of the research work has focused on studying the omnidirectional transmission problem under uniform linear arrays. Therefore, how to realize the omni-directional transmission of common signals under the uniform rectangular array is an urgent ...

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Application Information

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IPC IPC(8): H04B7/0408H04B7/0456H04B7/06
CPCH04B7/0408H04B7/0456H04B7/0617H04B7/0669H04B17/336
Inventor 蒋轶苏冬良王昕
Owner FUDAN UNIV
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