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Data transfer method and device

A data transmission method and data technology, applied in the field of communication, can solve the problem of high complexity of algorithm implementation, and achieve the effects of simple algorithm, improved system performance, and easy implementation.

Inactive Publication Date: 2009-11-11
罗源县产品质量检验所
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Problems solved by technology

In this method, it is necessary to calculate the pairing factor between each user and user i, so the complexity of the algorithm is relatively high

Method used

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  • Data transfer method and device
  • Data transfer method and device

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Embodiment Construction

[0030] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. If there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In the following embodiments, the data transmission process will be described for precoding processing, user pairing processing, data detection processing, and data retransmission processing based on the multi-user MIMO technology.

[0031] According to an embodiment of the present invention, a method for user pairing based on multi-user MIMO is firstly provided. Before describing the user pairing method in the embodiment of the present invention, the precoding operation related to the pairing operation will be described first. Precoding technology refers to the use of channel state information at the transmitter to preprocess the transmitted signal to eliminate inter-symbol-interference (abbreviated as ISI) and inter-ca...

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Abstract

The invention discloses a data transfer method and a device. In the above data transfer method, according to the channel condition of each user, a plurality of users are divided into two user groups; one user is selected from the two user groups respectively for matching and transmitting data. The invention realizes user matching operation and subsequent data retransmission operation with easier algorithm, thus improving system performance.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission method and device. Background technique [0002] Multi-user multiple input and multiple output (Multiple Input and Multiple Output, referred to as MIMO) technology is an important technology in wireless communication systems, which can use multipath to provide higher data throughput while increasing coverage and reliability. [0003] The so-called multi-user MIMO (Multi-User MIMO, referred to as MU-MIMO) technology means that the base station pairs two single-antenna transmission users according to the characteristics of the spatial channel, and allocates them to the same frequency resource, and the paired users It is then necessary to send mutually orthogonal reference signals, so as to obtain channel information required for data demodulation through channel estimation. Multi-user MIMO technology can increase uplink channel capacity and user throughput. ...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16H04L1/00H04L1/06
CPCH04L1/1887H04L1/1825H04L1/0015H04L1/0061
Inventor 王扬郭阳
Owner 罗源县产品质量检验所
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