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Two-way relay transmission method and apparatus applied to multi-input multi-output communication systems

A communication system, two-way relay technology, applied in transmission systems, multi-carrier systems, radio transmission systems, etc., can solve problems such as reducing the peak average relay transmission power of two-way relay transmission

Active Publication Date: 2014-12-03
SPRING FOUND OF NCTU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a device and method for two-way relay transmission applied to a multiple-input multiple-output communication system to solve the problem of reducing the peak value of two-way relay transmission and the average relay transmission power

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  • Two-way relay transmission method and apparatus applied to multi-input multi-output communication systems
  • Two-way relay transmission method and apparatus applied to multi-input multi-output communication systems
  • Two-way relay transmission method and apparatus applied to multi-input multi-output communication systems

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Embodiment Construction

[0043] The device and method for bidirectional relay transmission of the present invention can be applied to various multiple-input multiple-output (multi-input multi-output, MIMO) communication systems. In order to simplify the description and make it easier to understand, the following figure 1 as well as figure 2 The application scenarios shown are illustrated. figure 1 In the application scenario shown, each of the terminal devices T0 and T1 uses two transmitting antennas and uses Alamouti space-time coding (STC) to transmit signals, and each terminal device T0 and T1 uses only one antenna to receive signals, And the relay device R has a single antenna. figure 2 In the shown application scenario, both the terminal devices T0 and T1 and the relay device R have two transmitting antennas and two receiving antennas, and the terminal devices T0 and T1 adopt spatial multiplexing (SM) to transmit signals.

[0044] To simplify the description and facilitate understanding, it is...

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Abstract

A two-way relay transmission apparatus applied to multi-input multi-output communication systems that combines signals received from the terminals and performs a modulo operation to the combined signal to concentrate the signal points towards the center of the constellation. And then, the modulo version of the combined signal is broadcasted. As a result, the peak and average relay transmission powers can be reduced.

Description

technical field [0001] The invention relates to a device and method for bidirectional relay transmission, in particular to a device and method for bidirectional relay transmission applied to a multi-input multi-output communication system. Background technique [0002] Relay transmission is regarded as an important technology in the continuous evolution of wireless communication networks. Traditional half-duplex relay transmission can only transmit or receive signals in one direction at any point in time, so four time slots are required to complete the two-way signal exchange assisted by relay transmission between two communication terminal devices . Two-way relay transmission can receive or transmit signals from two terminal devices at the same time, so only two time slots are needed to complete a two-way signal exchange assisted by relay transmission, thereby greatly improving spectrum utilization efficiency. [0003] An existing two-way relay transmission is an amplify-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/15H04B7/04H04L27/34
CPCH04B7/026H04W52/322H04B7/0413H04W52/46H04B7/15528
Inventor 林大卫钟翼州
Owner SPRING FOUND OF NCTU