Physical Layer Network Coding Method Based on Gaussian Waveform

A network coding, Gaussian waveform technology, applied in the field of communication

Active Publication Date: 2018-07-27
陕西尚品信息科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose a physical layer network coding method based on Gaussian waveforms to solve the problem of carrier displacement in a two-way relay network, reduce inter-carrier interference ICI, and improve transmission efficiency and network utilization

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  • Physical Layer Network Coding Method Based on Gaussian Waveform
  • Physical Layer Network Coding Method Based on Gaussian Waveform
  • Physical Layer Network Coding Method Based on Gaussian Waveform

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the solutions and effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] refer to figure 1 , the two-way relay network system used in the present invention is composed of user A, user B and relay R. In the multiple access time slot MA, user A and user B send information sequences to relay R at the same time, after linear coding, linear equalization and sampling at the relay, and signal detection and decoding process, the relay will send information to user A and user B Returns a decoded output containing network encoding information. Since the users know their own information, combined with the received decoding output information, they can correspondingly extract the information sent by the other user from the decoding output information.

[0020] refer to figure 2 and image 3 , the present in...

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Abstract

The invention discloses a physical-layer network coding method based on a Gaussian waveform. An implementation scheme for the method comprises the following steps of respectively carrying out linear coding on information sequences uA and uB of two users and mapping to matrixes DA and DB according to an M-ary quadrature amplitude modulation corresponding relation; correspondingly converting each information symbol sequence to a kth subcarrier to be transmitted at a lth time slot after passing through a Gaussian filter; receiving a composite signal with additive white Gaussian noise and channel delay of two users at a relay R; transmitting the received composite signal into a simplified linear equalizer to compensate the influence of a fading channel; and then detecting and decoding the compensated signal and returning decoding output information to the two users. According to the method, the problem that the existing two-way relay network cannot eliminate multi-carrier displacement interference to affect system transmission efficiency and network utilization rate can be solved, and the method can be used for a two-way relay network system.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a physical layer network coding method, which can be used in a two-way relay network system. Background technique [0002] Two-way relay TWR, as a new generation of cooperative communication technology, has become a research hotspot in current wireless or mobile communication systems, and cooperative communication technology is one of the indispensable key technologies in modern wireless or mobile communication systems. At present, two-way relay networks are widely used in communication systems, such as the two-way relay channel TWRC using physical layer network coding PLNC. The data of the communicating parties on this channel can be exchanged through an auxiliary relay. In the multi-access time slot MA, the data of two users can be transmitted to the same relay node independently at the same time; in the broadcast time slot BC, the relay node transmits the en...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L1/00
CPCH04L1/0076H04L25/03821
Inventor 邓亭强张连委王岳彪侯珍曹军
Owner 陕西尚品信息科技有限公司
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