Pilot frequency method and system based on ofdm/oqam under industrial 5g
A 5G and industrial technology, applied in the field of pilot design, can solve problems such as inaccurate channel results, achieve the effect of enhancing robustness and reducing BER
Active Publication Date: 2022-07-08
HKUST TIANGONG INTELLIGENT EQUIP TECH (TIANJIN) CO LTD +1
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Problems solved by technology
This kind of pilot design is better for the estimation of quasi-stationary channels, but in fast fading channels, this kind of pilot design will lead to inaccurate subsequent channel results
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[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0059] The purpose of the present invention is to provide a pilot frequency method and system based on OFDM / OQAM under industrial 5G, so as to reduce the BER of demodulation information at the receiving end, thereby enhancing the robustness of the anti-fading channel of the OFDM / OQAM system.
[0060] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will...
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The invention relates to a pilot frequency method and system based on OFDM / OQAM under industrial 5G, and belongs to the technical field of pilot frequency design. In the present invention, the binary bit stream is mapped to obtain the QAM data set, and then the discrete pilot frequency data is inserted into the QAM data set according to preset rules, and after the first data stream is obtained, the complex data in the first data stream is serial-parallel converted to obtain the first data stream. Two data streams, then, placing the IAM-new pilot data in front of the second data stream to obtain a pilot data stream, and after obtaining the channel estimated value based on the pilot data stream, perform discrete processing on the channel estimated value to obtain the discrete pilot estimated value , and then perform first-order linear interpolation processing on the discrete pilot estimates based on the channel estimates to obtain the channel information of each column of pilot data streams, and then demodulate the channel information to obtain the demodulated binary data streams, so as to reduce the receiving end The BER of the demodulated information, thereby enhancing the robustness of the anti-drop channel of the OFDM / OQAM system.
Description
technical field [0001] The present invention relates to the technical field of pilot frequency design, and in particular, to a pilot frequency method and system based on OFDM / OQAM under industrial 5G. Background technique [0002] Industrial 5G means that the communication system has faster transmission speed and higher transmission efficiency, and it also means that it has better adaptability to fast fading channels and has a wider range of application spaces and scenarios. At present, the orthogonal frequency division multiplexing (offset quadrature modulation based orthogonal frequency division multiplexing, OFDM / OQAM) modulation system based on OFDM / OQAM interleaved orthogonal modulation is an important part of the 5G technology, which is an important part of the 5G technology. Gaussian Noise, AWGN) channel has approximately ideal transmission efficiency. At the same time, FDM / OQAM has better adaptability to fast fading channels than traditional OFDM with Cyclic Prefix ...
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IPC IPC(8): H04L27/26H04L25/02H04L5/00
CPCH04L27/2613H04L25/0228H04L5/0048Y02D30/70
Inventor 万亚东张超张波
Owner HKUST TIANGONG INTELLIGENT EQUIP TECH (TIANJIN) CO LTD