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Method and device for generating 3d MIMO omnidirectional precoding matrix with two-dimensional area array

A technology of 3DMIMO and precoding matrix, which is applied in the field of wireless communication, can solve problems such as inability to satisfy semi-unitary constraints, achieve the effect of ensuring spectrum utilization and improving radio frequency power utilization efficiency

Active Publication Date: 2020-06-26
SOUTHEAST UNIV +1
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Problems solved by technology

When the number of precoded data streams is two streams, the Golay complementary array extended from the Golay complementary sequence can satisfy the omnidirectional constraint and the antenna power constraint, but cannot satisfy the semi-unitary constraint

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  • Method and device for generating 3d MIMO omnidirectional precoding matrix with two-dimensional area array
  • Method and device for generating 3d MIMO omnidirectional precoding matrix with two-dimensional area array
  • Method and device for generating 3d MIMO omnidirectional precoding matrix with two-dimensional area array

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Embodiment Construction

[0039] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0040] Such as figure 1 As shown, a method for generating an omnidirectional precoding matrix for a 3D massive MIMO system configured with a two-dimensional array disclosed in an embodiment of the present invention includes: the base station generates a pair of complementary sequences, and the complementary sequence has a constant modulus for elements and satisfies non-zero Element position complementation; the base station generates two sets of complementary sequence sets with zero cross-correlation. Omni-directional precoding matrix on the signal stream. The base station referred to in the present invention may also use other sending devices capable of sending...

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Abstract

The invention discloses an omnidirectional precoding matrix generation method and device for a 3D MIMO system configured with the two-dimensional area array. The method simplifies design of an omnidirectional precoding matrix for a 3D large-scale MIMO system configured with the two-dimensional area array into design of a pair of complementary sequences with constant element modulus and meeting non-zero element position complementation and design of two complementary sequence sets with mutual correlation of zero, wherein all the sequences in the two sequence sets are mutually orthogonal and quadratic sum of element moduli at the same position is a constant. By simply constructing the designed complementary sequences and two complementary sequence sets, the omnidirectional precoding matrix can be obtained. The omnidirectional precoding disclosed by the invention is the same in power in each space direction in a coverage area, power of each antenna is the same, so as to improve radio frequency power utilization efficiency, and precoding matrixes on all the data flows are mutually orthogonal, so as to guarantee spectrum efficiency.

Description

technical field [0001] The present invention relates to a wireless communication method, in particular to a method and a device for generating an omnidirectional precoding matrix for a 3D massive MIMO system configured with a two-dimensional array in a ground wireless communication system and a satellite communication system. Background technique [0002] Massive MIMO can provide huge channel capacity gain and energy efficiency improvement by configuring large-scale antennas at the base station, and has become one of the key technologies for 5G mobile communications. For new technologies such as drones and the Internet of Things, massive MIMO can also provide effective support, improve the reliability and throughput of drone communications, and meet the needs of large-scale connection technologies that support the Internet of Things. At present, large-scale antenna configurations are used in satellite communication systems, and the integration of satellite mobile communicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0456H04B7/0413
CPCH04B7/0413H04B7/0456Y02D30/70
Inventor 卢安安高西奇赵黎晔李延东
Owner SOUTHEAST UNIV
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