Data and pilot frequency domain multiplexing super-Nyquist transmission method and transmission device
A technology of pilot multiplexing and frequency domain, which is applied in the field of super-Nyquist transmission method and transmission device, can solve the problem of channel estimation without providing frequency domain pilot transmission scheme, achieve performance reduction, reduce overhead, and avoid interference Effect
Active Publication Date: 2020-06-23
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 following describes the implementation of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content 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 the features in the embodiments can be combined with each other if there is no conflict.
[0032] It should be noted that the illustrations provided in the following embodiments only illustrate the basic idea of the present invention in a schematic manner. The figures only show the components related to the present invention instead of the number, shape, and number of components in actual i...
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The invention provides a data and pilot frequency domain multiplexing super-Nyquist transmission method, which comprises the following steps of: converting each modulation symbol sequence of an information data block to be sent into an FTN frequency domain symbol sequence, and performing FTN frequency domain compression to obtain a first signal sequence; performing frequency domain multiplexing onthe first signal sequence and a pilot frequency sequence according to the data subcarrier position serial number and the pilot frequency subcarrier position serial number to obtain a first data and pilot frequency multiplexing sequence; mapping the first data and pilot frequency multiplexing sequence to effective subcarriers, and forming a second data and pilot frequency multiplexing sequence ofwhich the length value is the total number of the subcarriers; inverse discrete Fourier transform is carried out on the second data and the pilot multiplexing sequence to obtain a second signal sequence; and adding a guard interval at the head or tail of the second signal sequence to generate an output signal sequence. According to the invention, while the data transmission efficiency of the FTN system is ensured, the channel estimation performance of the system is improved, and the communication reliability of the system under a multipath channel is improved.
Description
Technical field [0001] The present invention relates to the field of mobile communication technology, in particular to a super-Nyquist transmission method and transmission device for data and pilot frequency domain multiplexing. Background technique [0002] As the demand for high-speed communication services increases and the requirements for spectrum efficiency within limited spectrum resources continue to increase, time-domain and frequency-domain non-orthogonal technologies as effective methods to improve spectrum efficiency are attracting wide attention from researchers. 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 Noise (AWGN) channel, inter-symbol interference is artificially introduced. Symbol Interference (ISI) compresses the interval between symbols at the...
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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