Receiving method of double-scattering signal components in lattice multi-carrier parallel transmission system

A technology of a transmission system and a receiving method, applied in the field of receiving double scattered signal components, can solve the problems of air signal distortion, crosstalk, adjacent channel interference, long symbols, etc.

Inactive Publication Date: 2016-11-23
PLA UNIV OF SCI & TECH
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Problems solved by technology

[0011] The purpose of the present invention is to solve the more prominent problems such as air signal distortion and time-frequency domain energy scattering in the grid multi-carrier parallel transmission system in the transmission process, and the resulting serious adjacent channel interference and long sy...

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  • Receiving method of double-scattering signal components in lattice multi-carrier parallel transmission system
  • Receiving method of double-scattering signal components in lattice multi-carrier parallel transmission system
  • Receiving method of double-scattering signal components in lattice multi-carrier parallel transmission system

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Embodiment Construction

[0034] At present, the effective use of spectrum resources has become the core issue of high-speed data transmission. As far as air signals are concerned, the grid orthogonal frequency division multiplexing technology LOFDM is based on the theory of spherical filling, and the traditional multi-carrier is changed into a hexagonal one through even-numbered sub-carrier dislocation transmission. The rectangular grid structure can accommodate more transmission symbols on a given time-frequency plane, which further improves the utilization rate of spectrum resources. However, under fast moving conditions, communication signals are often significantly distorted due to factors such as channel multipath and time-varying factors during transmission. In addition to the special grid structure of the signal, the LOFDM system faces more severe crosstalk intensity and crosstalk length, thus putting forward higher requirements for such signal reception.

[0035] Aiming at the need to realize ...

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Abstract

The invention relates to a receiving method of double-scattering signal components in a lattice multi-carrier parallel transmission system. According to the method, a new time-frequency filter group is constructed on inverse lattices corresponding to time-frequency lattices which send signals, so that the receiving of signal scattering components can be realized; by means of compactness simplification, signal scattering component receiving under a fast moving environment can be completed quickly; and therefore, the problem of the loss of information of a part of signal scattering components which is caused by the incompleteness of a filter group existing in a traditional receiver can be solved fundamentally, and compression redundancy and decoding performance can be both improved to a greater extent. With the receiving method of the invention adopted, defects in the receiving and processing of lattice orthogonal frequency division multiplexing (LOFDM) multi-carrier signals can be eliminated; the reliability of lattice multi-carrier data parallel transmission under the fast moving environment can be improved significantly; and the novel receiving of the lattice orthogonal frequency division multiplexing (LOFDM) multi-carrier signals can be realized; and based on parameter configuration adjustment, the receiving method can be used for a traditional multi-carrier system so as to improve the receiving performance of the traditional multi-carrier system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, relates to a grid multi-carrier parallel transmission system, and relates to a method for receiving double scattering signal components in the grid multi-carrier parallel transmission system. Background technique [0002] The grid multi-carrier parallel transmission LOFDM system is a parallel transmission scheme improved on the basis of the existing Orthogonal Frequency Division Multiplexing (OFDM) system. LOFDM transmits through the odd-even branch staggered transmission, so that the time-frequency position of symbol transmission is adjusted. It is a hexagonal grid structure (see reference [1]). Starting from the theory of two-dimensional spherical filling, under the same Euclidean distance, this scheme can further increase the transmission capability of the transmitting symbol under a given frequency band resource, and improve the efficiency of spectrum resource usage. Grid mult...

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Application Information

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IPC IPC(8): H04L1/00H04L25/03
CPCH04L1/005H04L1/0054H04L25/03012H04L25/03159H04L25/03312
Inventor 袁志钢王强何晓晖曹轶君杨柳简伟
Owner PLA UNIV OF SCI & TECH
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