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Precoding method, multi-carrier transmission method, transmitter, receiver and system

A transmission method and precoding technology, applied in the field of multi-carrier transmission, can solve the problems of system self-interference and high system bit error rate, and achieve the effect of eliminating self-interference, less complexity and flexibility.

Active Publication Date: 2021-09-17
中国星网网络应用有限公司
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  • Description
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Problems solved by technology

However, since the GFDM waveform is non-orthogonal, this will bring the problem of self-interference to the system, making the bit error rate of the system higher

Method used

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  • Precoding method, multi-carrier transmission method, transmitter, receiver and system
  • Precoding method, multi-carrier transmission method, transmitter, receiver and system
  • Precoding method, multi-carrier transmission method, transmitter, receiver and system

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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Abstract

The invention discloses a precoding method, a multi-carrier transmission method, a transmitter, a receiver and a communication system. The multi-carrier transmission method includes: S1, performing QAM modulation processing and first serial-to-parallel conversion on the transmission data, and performing precoding processing; S2, performing GFDM modulation; S3, performing space-time coding processing to obtain the first transmission data and the second transmission data ; S4, remove the cyclic prefix, and perform frequency domain equalization processing; S5, perform matched filter demodulation processing on the frequency domain equalized data; S6, perform deprecoding processing; S7, perform interference equalization processing sequentially after deprecoding processing, the second Serial-to-parallel conversion processing and QAM demodulation processing to obtain transmission data. Utilization GFDM self-interference matrix after matched filter demodulation is a block cyclic matrix, which can be decomposed to obtain a precoding matrix, and the corresponding de-precoding operation and residual interference removal can be performed at the receiving end, which can completely eliminate the self-interference of the system. Improve the bit error rate performance of the system.

Description

technical field [0001] The present invention relates to a multi-carrier transmission method, in particular to a precoding method, a multi-carrier transmission method, a transmitter, a receiver and a communication system. Background technique [0002] With the continuous development of mobile communication, it is expected to support more application scenarios, such as tactile Internet, machine type communication (Machine Type Communication, MTC), Internet of Things (Internet of Things, IoT), etc., these application scenarios require higher data rate. MTC requires low power consumption, but the orthogonality between subcarriers of OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) in 4G requires strict synchronization and it is difficult to achieve low power consumption. The tactile Internet contains a large number of real-time applications that require extremely low latency requirements, and low latency requires short bursts of data...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0456H04L27/26
CPCH04B7/0456H04L27/2602H04L27/2691
Inventor 向丹蕾王文斌邹光南
Owner 中国星网网络应用有限公司
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