Precoding method and device and communication system

A technology of precoding and precoding vectors, which is applied in the field of precoding methods, devices and communication systems, can solve the problems of reducing system throughput, occupying antenna/time/frequency resources, etc., and achieve the goal of increasing the probability of sending signals and improving performance Effect

Active Publication Date: 2010-03-03
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Existing methods to improve MS transmission performance in edge cells have their own disadvantages: power control technology sacrifices precious power resources, AMC technology reduces system throughput, and diversity technology occupies valuable system antennas / time / frequency resource

Method used

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  • Precoding method and device and communication system
  • Precoding method and device and communication system
  • Precoding method and device and communication system

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

[0026] For the transmitter at the edge of the cell, at least two data blocks are sent to multiple receivers. Here, the transmitting end may be a terminal, a relay station, etc., and the receiving end may be a relay station, a base station, etc. For example, when the transmitting end is a terminal, the corresponding receiving end may be a relay station or a base station. The transmitting end is a relay station, and the corresponding receiving end may be equipment such as a base station.

[0027] The transmitting end needs to obtain a precoding vector first, and the precoding vector is a vector in the zero vector space of the channel matrix; according to the precoding vector, at least two data blocks are precoded and sent to multiple adjacent cells.

[0028] Obtaining the precoding vector may be completed on the receiving end ...

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Abstract

The embodiment of the invention provides a precoding method, which comprises the following steps: acquiring precoding vectors which are in a zero vector space of a channel matrix; and precoding at least two data blocks according to the precoding vectors, and sending the precoded data blocks to a plurality of adjacent cells. The embodiment of the invention also provides a terminal and a communication system, which can effectively reduce the interference among the plurality of data blocks by precoding the data blocks to improve the uplink transmission performance.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a precoding method, device and communication system. Background technique [0002] MIMO (Multiple Input Multiple Output) technology uses multiple transmitting antennas and receiving antennas at the sending end and receiving end respectively, and signals are transmitted and received through multiple antennas at the sending end and receiving end, thereby effectively improving data transmission. the spectral efficiency. Because it effectively improves the capacity of the system, better diversity performance and many advantages of interference suppression, it is widely used in the next generation of mobile communication systems, such as in 3G (The 3rd Generation Mobile Communication System, the third generation mobile communication system ), 4G (The 4th Generation Mobile Communication System, the fourth generation mobile communication system) multi-antenna digital commu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/06H04L25/03H04B7/0456
Inventor 杜颖钢赵印伟高驰
Owner HUAWEI TECH CO LTD
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