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Parallel data processing method and device suitable for FBMC transmission

A data processing and data technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of low spectrum leakage, reduced effective rate of frequency domain expansion, and high technical complexity of new waveforms, achieving high efficiency and complete realization. The effect of using

Active Publication Date: 2018-10-12
SOUTHEAST UNIV
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Problems solved by technology

[0005] Purpose of the invention: In view of the high complexity of the existing FBMC new waveform technology and the problem of the effective rate drop caused by the frequency domain expansion, the present invention aims to provide a parallel data processing method and device suitable for FBMC transmission, which not only simplifies the FBMC The hardware implementation of the system has obtained the same rate as OFDM, and at the same time, the spectrum leakage is lower

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  • Parallel data processing method and device suitable for FBMC transmission
  • Parallel data processing method and device suitable for FBMC transmission
  • Parallel data processing method and device suitable for FBMC transmission

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0044] Such as figure 1As shown, a parallel data processing method suitable for FBMC transmission disclosed in the embodiment of the present invention, the method is used for sending data processing at the sending end, and mainly includes the following steps:

[0045] (1) Parallel QAM modulation: According to the overlap factor K of the prototype filter designed in the FBMC system by the Cognitive Wireless Physical Layer (PHYDAYS) project, the input bit data is subjected to M-order QAM modulation in K-way parallel mode, and then mapped to Transmission on subcarriers, . Assuming that the bit length of the input data is L and the number of subcarriers is N, each variable satisfies the following relationship: L=KMN.

[0046] The L-length bit data becomes KN-length complex symbols after M-order modulation, and the complex symbols of the constellation...

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Abstract

The invention discloses a parallel data processing method and device suitable for FBMC transmission. The parallel data processing method comprises the following steps: performing QAM modulation on theinput data in parallel; performing offset quadrature amplitude modulation (OQAM) on a modulated signal; then, filtering an OQAM symbol in the frequency domain by using the frequency domain extensionmethod, and transforming the filtered data into time domain data for processing; finally, processing the time domain data through the overlapping addition manner to achieve waveform hybrid and send out the waveform hybrid; carrying out waveform separation processing at a receiving end, and performing a series of demodulation steps correspondingly, and restoring the original transmitted data. The parallel data processing method proposed by the invention is combined with the FBMC-specific waveform hybrid transmission mechanism to avoid the efficiency loss caused by the frequency domain expansion, the transmission and reception process of the FBMC is effectively optimized, and the K (prototype filter overlap factor) times effective transmission rate can be reached under the same sampling ratecondition.

Description

technical field [0001] The invention relates to a parallel data processing method and device suitable for FBMC transmission, belonging to the field of wireless communication. Background technique [0002] In order to better support various application scenarios of 5G, the research of new multi-carrier technology needs to pay attention to various requirements. Among them, the Filter Bank Multi Carrier (FBMC) technology is based on subcarrier filtering, which abandons the orthogonality in the complex domain in exchange for the degree of freedom in the design of the time domain locality of the waveform. This degree of freedom This enables FBMC to adapt to channel changes more flexibly. [0003] At present, the multi-carrier symbol sequence modulation is realized by combining FBMC with multi-frequency interleaving technology obtained by offset quadrature amplitude modulation. The main process is as follows: firstly, the modulated FBMC symbol sequence is divided into real part a...

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Application Information

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IPC IPC(8): H04L27/26H04L27/36H04L27/38
CPCH04L27/2628H04L27/264H04L27/265H04L27/36H04L27/38
Inventor 黄永明徐颖群刘婷薇王畑徐家辉
Owner SOUTHEAST UNIV
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