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Data transmission method of transceiver under two-cell multi-user two-hop network

A data transmission method and multi-user technology are applied in the field of data transmission of transceivers under a two-cell multi-user two-hop network

Active Publication Date: 2015-01-07
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The technical problem solved by the present invention is: how to reduce the decoding complexity of the destination node while obtaining the specified degree of freedom, and how to improve the normalized degree of freedom

Method used

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  • Data transmission method of transceiver under two-cell multi-user two-hop network
  • Data transmission method of transceiver under two-cell multi-user two-hop network
  • Data transmission method of transceiver under two-cell multi-user two-hop network

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Embodiment Construction

[0088] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0089] Embodiment 1 of the present invention proposes a data transmission method for a transceiver in a two-cell multi-user two-hop network, as figure 1 As shown, the method includes the following steps:

[0090] S101. In different time slots, the server controls the source node groups to send data alternately, and adjusts the transmission and reception of the data sent by the source node group by the half-duplex relay node according to the difference in the source node groups sending data in different time slots In order, the source node group is composed of multiple single-antenna users in two cells;

[0091] S102. The half-duplex relay node obtains its own local chann...

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Abstract

The invention relates to the technical field of communications, and discloses a data transmission method of a transceiver under a two-cell multi-user two-hop network. The data transmission method comprises the steps that in different time slots, a server controls source node groups to conduct data transmitting alternately and adjusts the sequence according to which a half-duplex relay node transmits and receives the data sent by the source node groups according to the differences between the source node groups which transmit the data in different time slots, the relay node obtains local channel state information of itself through channel estimation, and pilot symbols which are subject to pre-coding processing are transmitted while data forwarding is conducted; a target node decodes expected data according to an equivalent channel matrix obtained through estimation. By the adoption of the method, the source node groups, the relay node and the target node do not need to know global channel information, the calculation complexity of the target node can be reduced when the specified degree of freedom is reached by using the local channel information, and better degree-of-freedom performance can be obtained by using more time slot resources.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data transmission method of a transceiver in a two-cell multi-user two-hop network. Background technique [0002] With the continuous development of communication technology, the design of relay transmission protocol in two-cell multi-user two-hop network is of great significance. [0003] The current scheme includes: for a two-cell multi-user two-hop network, each source node group has M single-antenna users and the relay and destination nodes are equipped with M antennas. The current relay transmission protocol can achieve a degree of freedom of Number is When the relay node does not have any global CSI, the decoding complexity of the destination node is high; when the relay node only has the global CSI of the first hop, the decoding complexity of the destination node can be reduced. [0004] However, in the existing relay transmission protocol, the two relay nodes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L5/16H04B7/04H04B7/14
CPCH04B7/0456H04L5/0048H04L25/0202
Inventor 李立华靳进苏鑫田辉
Owner BEIJING UNIV OF POSTS & TELECOMM
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