Super-Nyquist transmission method and transmission device for frequency domain multiplexing of data and pilot frequency
A pilot multiplexing and transmission method technology, which is applied in the field of super-Nyquist transmission method and transmission device, can solve the problems of channel estimation without providing frequency domain pilot transmission scheme, achieve performance reduction, improve flexibility, reduce The effect of spending
Active Publication Date: 2022-07-15
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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However, the current research on the FTN system implemented in the frequency domain has not provided an effective frequency domain pilot transmission scheme and corresponding channel estimation research.
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[0031] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.
[0032] It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and number of compo...
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The invention provides a super-Nyquist transmission method for multiplexing data and pilot frequency domains: converting each modulation symbol sequence of an information data block to be sent into an FTN frequency domain symbol sequence, and then performing FTN frequency domain compression to obtain a first signal sequence; according to the position sequence number of the data subcarrier and the position sequence number of the pilot subcarrier, perform frequency domain multiplexing on the first signal sequence and a pilot sequence to obtain the first data and pilot multiplexing sequence; The multiplexing sequence is mapped to the effective subcarriers, and a second data and pilot multiplexing sequence whose length value is the total number of subcarriers is formed; the second data and pilot multiplexing sequence are subjected to inverse discrete Fourier transform to obtain the second data and pilot multiplexing sequence. Signal sequence; adding a guard interval at the beginning or end of the second signal sequence to generate an output signal sequence. While ensuring the data transmission efficiency of the FTN system, the invention improves the performance of the system channel estimation and improves the communication reliability of the system under the multipath channel.
Description
technical field [0001] The present invention relates to the technical field of mobile communication, and in particular, to a super-Nyquist transmission method and a transmission device for multiplexing data and pilot frequency domains. Background technique [0002] With the increasing demand for high-speed communication services and the continuous improvement of spectral efficiency requirements within limited spectrum resources, non-orthogonal techniques in time and frequency domains are attracting extensive attention of researchers as an effective method to improve spectral efficiency. In 1975, Mazo first proposed the Faster-Than-Nyquist (FTN) transmission technology. As a kind of non-orthogonal transmission technology, FTN technology breaks the traditional Nyquist criterion. When the M-ary signal is transmitted in the additive white Gaussian Compressing the interval between symbols at the expense of symbol interference, ISI) can increase the symbol transmission rate by 25...
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IPC IPC(8): H04L25/03H04L5/00
CPCH04L25/03834H04L5/0048
Inventor 李明齐彭雅秋
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI