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Channel equalization method in 5G multi-carrier communication system

A technology for multi-carrier communication and channel equalization, applied in multi-carrier systems, modulated carrier systems, multi-frequency code systems, etc., and can solve the problems of increased filter bank length and computational complexity, and difficult technical implementation.

Inactive Publication Date: 2019-07-26
BENGBU COLLEGE
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Problems solved by technology

From single-tap equalizer to N-order tap, from time-varying channel to time-frequency dual channel equalizer design, rely on Fast Fourier Transform (FFT-Fast Fourier Transform), when the FFT length increases, the filter bank The length and computational complexity also increase accordingly, and it is also technically difficult to implement

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  • Channel equalization method in 5G multi-carrier communication system
  • Channel equalization method in 5G multi-carrier communication system
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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] A channel equalization method in a 5G multi-carrier communication system is a method for performing multi-tap equalization on a time-frequency dual-selection channel in a MIMO-FBMC system based on a combined MMSE method of data blocks, and specifically includes the following steps:

[0065] (1), establish the FBMC-OQAM system model: see figure 1 , the original FBMC-OQAM system model is mainly composed of four parts, the signal sending end mainly include...

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Abstract

The invention discloses a channel equalization method in a 5G multi-carrier communication system. The method comprises the following steps: firstly, establishing a general model of FBMC-OQAM; secondly, using a Hermite filter design for a prototype filter of the FMBC filter bank, the Hermite filter having the time domain and frequency domain symmetry characteristic, and the adjacent signal interference ratio obtained by an FBMC system designed by the filter being about 3 dB smaller than that of the prototype filter of the European PHYDYAS bank; in an Jacks-Doppler frequency spectrum fading channel model, performing multi-tap equalization on a time-frequency double-selection channel in an MIMO-FBMC system based on a data block joint MMSE method; the test of the bit error rate-signal-to-noiseratio of the FBMC system being completed by increasing the number of the antennas, and the purposes of reducing the interference between adjacent subcarriers of the system, reducing the total bit error rate of the system and improving the signal-to-noise ratio of the system are achieved, so that the effectiveness and reliability of the multi-carrier communication system are enhanced.

Description

technical field [0001] The invention relates to the field of 5G multi-carrier communication systems, in particular to a channel equalization method in the 5G multi-carrier communication system. Background technique [0002] The development of high-speed digital information and the research and development of related technologies for 5G mobile communication systems have become an important topic of great concern in the communication industry in recent years. One of the candidate technologies for the physical layer of the system - Offset Quadrature Amplitude Modulation (OQAM-Offset Quadrature Amplitude Modulation) ) filter bank multi-carrier system (hereinafter collectively referred to as FBMC), compared with the Orthogonal Frequency Division Multiplexing-OFDM system, the FBMC system has higher spectrum utilization and lower out-of-band Radiation has received extensive attention and development. Since the most common problems encountered in modern wireless communication are t...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04L27/01H04L27/26H04L27/36
CPCH04L25/03114H04L25/03121H04L25/03891H04L27/01H04L27/264H04L27/362
Inventor 杨艳
Owner BENGBU COLLEGE
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