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Antenna selection-based multi-antenna network coding relay transmission method

A technology of network coding and antenna selection, applied in multi-frequency code system, baseband system components, preventing/detecting errors through diversity reception, etc., can solve the problems of limiting the quality of service and throughput of users at the edge of the cell, and achieve improved spectrum Utilization, lower BER, and less overhead

Inactive Publication Date: 2011-04-13
TSINGHUA UNIV
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Problems solved by technology

[0002] In the LTE-Advance system with co-frequency networking, the interference between adjacent cells limits the service quality and throughput of cell edge users

Method used

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Embodiment Construction

[0017] The multi-antenna network coding cooperative relay transmission method based on antenna selection proposed by the present invention, the schematic diagram of its network structure and communication relationship is as follows figure 1 shown, including the following steps:

[0018] (1) The first user in the wireless communication network sends the first information sequence A to the base station and the relay terminal in the orthogonal channel, and the second user sends the second information sequence A to the base station and the relay terminal in the orthogonal channel B, assuming that the number of transmitting antennas of the first user and the second user are both N t , and the first information sequence A and the second information sequence B adopt the same constellation modulation method and have the same sequence length, then the information sequence A sent by the first user is expressed as The information sequence B sent by the second user is expressed as whe...

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Abstract

The invention relates to an antenna selection-based multi-antenna network coding relay transmission method, which belongs to the technical field of wireless communication. The method comprises that: two users in a wireless communication network transmit information sequences to a base station and a relay in an orthogonal channel, and the base station and the relay perform channel estimation according to the information sequences to obtain a channel matrix, and decode the information sequences; the base station estimates the quality of each antenna data stream according to the channel matrix, generates a relay packet for network coding and transmits the relay packet to the relay, and the relay transmits a network coding data stream to the base station; and the base station performs joint decoding according to the information sequences and a relay forwarding sequence to finish relay transmission. The method provided by the invention improves the transmission efficiency of a system so asto increase a frequency spectrum utilization rate by utilizing multi-antenna transmission and network coding, and reduces a bit error rate and improves the reliability of the system by utilizing the transmission quality of the antenna data streams and the characteristics of network coding-based cooperative relay.

Description

technical field [0001] The invention relates to a multi-antenna network coding relay transmission method based on antenna selection, which belongs to the technical field of wireless communication. Background technique [0002] In the same-frequency LTE-Advance system, the interference between adjacent cells limits the service quality and throughput of cell-edge users. In order to further improve the spectrum utilization rate of the system and improve the service quality and throughput of users at the edge of the cell, it is necessary to use related technologies to effectively reduce the interference between cells. Coordinated Multiple Point (CoMP) transmission technology in the field of wireless communication is a technology with broad prospects for LTE-Advanced at present. It can effectively avoid or reduce the number of cell interfering. The most commonly used CoMP model is the networking mode based on BBU+RRU, which is similar to the traditionally known distributed ante...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L25/02H04L27/26
Inventor 粟欣张长高晖薛光达曾捷
Owner TSINGHUA UNIV
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