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High-performance successive interference cancellation receiver based on non-orthogonal multi-access system

A serial interference elimination and non-orthogonal multiple access technology, which is applied in transmission systems, electrical components, etc., can solve problems such as unsatisfactory signal quality and performance impact, and achieve improved accuracy and reliability, optimal balance, and The effect of reducing the error rate

Active Publication Date: 2017-05-17
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In the serial interference elimination process of the receiver in the existing non-orthogonal system, the signal to be eliminated is only demodulated and modulated, and then subtracted from the total signal. The method of interference is simple, but when the channel is poor, the performance will be greatly affected, resulting in unsatisfactory signal quality

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  • High-performance successive interference cancellation receiver based on non-orthogonal multi-access system
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  • High-performance successive interference cancellation receiver based on non-orthogonal multi-access system

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0032] The present invention is based on the high-performance serial interference cancellation receiver of the non-orthogonal multiple access system, such as Figure 5As shown, a selection switch unit, a user decoding unit and a user encoding unit are sequentially added between the user demodulation unit and the user modulation unit of the first N-1 level (from the first level to the N-1th level) cancellation device, The result of the user coding unit is output to the user modulation unit; the selection switch is connected to the user decoding unit and the user modulation unit respectively, and the selection switch sends the result of the user demodulation unit it receives to the user decoding unit Or a user modulation unit; the N is the number of users on the same subcarrier. A decoding and encoding module of the present invention includes a...

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Abstract

The invention relates to the mobile communication technology field, and especially relates to a high-performance successive interference cancellation receiver based on a non-orthogonal multi-access system. A selector switch unit, a user decoding unit and a user coding unit are sequentially added between a user demodulation unit and a user modulation unit of a former N-1 level cancellation apparatus, and a result of the user coding unit is output to the user modulation unit. The selector switch is connected with the user decoding unit and the user modulation unit, and a user demodulation unit result received by the selector switch is sent to the user decoding unit or the user modulation unit. The selector switch unit, the user decoding unit and the user coding unit are additionally adopted on the basis of a conventional successive interference cancellation receiver, error rates of signals of each level can be reduced through error correction capabilities of decoding and coding, and signal correctness and reliability can be improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a high-performance serial interference elimination receiver based on a non-orthogonal multiple access system. [0002] technical background [0003] Mobile communication has developed rapidly in decades, and has brought huge impacts on people's life, work, and society's politics and economy. Mobile communication has experienced the development from the first generation mobile communication system (1G) to the fourth generation mobile communication system (4G), and now the fifth generation mobile communication (5G) is being studied. With the increase in the bandwidth and capabilities of wireless mobile communication systems and the rapid development of mobile applications for individuals and industries, the ecology of mobile communication-related industries will gradually change. 5G is no longer just a higher-speed, larger-bandwidth, and more capable air Interface tech...

Claims

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Application Information

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IPC IPC(8): H04B1/16H04B1/10
CPCH04B1/10H04B1/16
Inventor 李云高翔吴广富
Owner CHONGQING UNIV OF POSTS & TELECOMM
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