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Superposition method of reference signal and data signal based on space division multiple access

A space division multiple access, reference signal technology, applied in the directions of space transmit diversity, diversity/multi-antenna systems, electrical components, etc., can solve problems such as underutilization of orthogonal resources, and achieve the effect of performance improvement

Active Publication Date: 2015-07-29
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this orthogonal resource is underutilized

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  • Superposition method of reference signal and data signal based on space division multiple access
  • Superposition method of reference signal and data signal based on space division multiple access
  • Superposition method of reference signal and data signal based on space division multiple access

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Embodiment Construction

[0039] Specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The detailed description of some related prior art will not be provided here if it is considered that the detailed description may obscure the gist of the present disclosure. In various embodiments, the same reference numerals are used to denote elements or units performing the same functions.

[0040] This disclosure considers that in a space division multiple access communication system, the data signal to be transmitted in the resource block of the first layer is superimposed on the position of the reference signal in the resource block of the first layer, and the extension of the superimposed data signal The sequence is orthogonal to the spreading sequence of the reference signal in the resource block of the first layer. Of course, the superimposed data signal may cause interference to reference signals of other layers, so the degree of inte...

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Abstract

The present invention provides a method of superimposing data signals and reference signals in a space division multiple access communication system, a base station of the communication system transmitting the first layer resource block and another layer resource block to a terminal using the same time / frequency resources, reference signals in the first layer resource block and reference signals in the other layer resource block being orthogonal to each other, the method including superimposing data signals transmitted in the first layer resource block at positions of reference signals in the first layer resource block, making a spreading sequence of the superimposed data signals orthogonal to a spreading sequence of the reference signals in the first layer resource block. The present invention can effectively use resources consumed under a multiuser MIMO system and drastically improve the system performance.

Description

technical field [0001] The present disclosure relates to multi-antenna signal transmission in a communication system based on space-division multiple access, and more specifically, to a method and device for superimposing a reference signal and a data signal based on space-division multiple access. Background technique [0002] In modern wireless communication systems, multiple-input multiple-output (MIMO) systems have been widely considered to be an effective way to improve system throughput. Among them, compared with single-user MIMO, multi-user MIMO can effectively improve system performance. Multi-user MIMO can be considered as a further enhancement to single-user MIMO. In the existing Long Term Evolution (LTE) system, its successor version is considering extending the existing Double Layer Beamforming (DL-BF) technology from single user to multi-user. In Rel-9, multi-user MIMO can use a design similar to single-user MIMO DL-BF, the difference is that the data streams ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04
CPCH04B7/0413H04B7/0408H04B7/046
Inventor 童辉徐明星野正幸中尾正悟今村大地
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA