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Precoding matrix code book generation method as well as precoding matrix selection method and device

A technology of precoding matrix and codebook, which is applied in the field of precoding matrix selection method and device, and precoding matrix codebook generation, which can solve the problems of poor signal support and small linear range of power amplifier, etc., and achieve the effect of good system performance

Active Publication Date: 2011-05-11
FUJITSU LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the user end, such as a mobile phone, due to cost constraints, the linear range of the power amplifier equipped with the transmitter for uplink transmission is relatively small, so the requirements for the CM value of the signal are also relatively high, that is, it only supports a small Signals with CM values ​​do not support signals with larger CM values.

Method used

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  • Precoding matrix code book generation method as well as precoding matrix selection method and device
  • Precoding matrix code book generation method as well as precoding matrix selection method and device
  • Precoding matrix code book generation method as well as precoding matrix selection method and device

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Embodiment Construction

[0048] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Moreover, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0049] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the ...

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Abstract

The invention provides a precoding matrix code book generation method as well as a precoding matrix selection method and device. The precoding matrix code book generation method comprises the following steps: selecting a first predetermined amount of precoding matrixes with a first structure from a predetermined first code book to constitute a precoding matrix set with a first structure, wherein each precoding matrix with a first structure has a first cubic metric (CM) value; selecting a second predetermined amount of precoding matrixes with a second structure from a predetermined second code book to constitute a precoding matrix set with a second structure, wherein each precoding matrix with a second structure has a second CM value; and generating a precoding matrix code book for uplink data transmission based on the precoding matrix set with a first structure and the precoding matrix set with a second structure, so that the precoding matrix code book at least comprises the precoding matrix set with a first structure and the precoding matrix set with a second structure.

Description

technical field [0001] The present application relates to a wireless communication system, and in particular to a method for generating a precoding matrix codebook, a method and a device for selecting a precoding matrix. Background technique [0002] The multiple-input multiple-output (MIMO) system is a wireless communication system that uses multiple transmitting antennas and multiple receiving antennas for data transmission, supports parallel data stream transmission, and can provide high data rates, large throughput, and greater communication distances. It has become one of the key technologies that have attracted people's attention in academic research and practical systems. Through continuous development in recent years, MIMO technology will be more and more used in various wireless communication systems. In terms of wireless broadband mobile communication systems, the 3rd Generation Mobile Communications Partnership Project (3GPP) has added content related to MIMO tech...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L25/03
CPCH04B7/0617H04B7/0434
Inventor 王键吴建明周华王轶张元涛
Owner FUJITSU LTD
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