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An LTE Signal Transmission System Based on Adaptive Adjustment Reference Vector

A technology of self-adaptive adjustment and reference vector, applied in transmission system, digital transmission system, multiple use of transmission path, etc.

Inactive Publication Date: 2018-06-22
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the existing LTE system, its signal transmission is still limited by the frequency band bandwidth, but it has very high requirements on the data transmission rate. The data transmission efficiency is still the focus of research

Method used

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  • An LTE Signal Transmission System Based on Adaptive Adjustment Reference Vector
  • An LTE Signal Transmission System Based on Adaptive Adjustment Reference Vector
  • An LTE Signal Transmission System Based on Adaptive Adjustment Reference Vector

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Embodiment approach

[0061] According to an embodiment of the present invention, the encoding vector offset relationship preset unit presets the encoding vector offset relationship; specifically includes:

[0062] The transmitting unit and the receiving unit pre-set the same M-dimensional pseudo-noise coding vector offset relationship, and define the combination form of the M-dimensional pseudo-noise coding vector as follows:

[0063]

[0064] L is the number of encoding elements in each pseudo-noise encoding cycle, and the vector with the smallest identification number among the r vectors is selected as the reference vector, that is, the reference vector is adaptively adjusted, and the transmission selects A total of r vectors, identification number NO 1 2 r , and the vector is the self-adaptive adjustment reference vector of this transmission information, PN i (0) is the i-th (i=NO) in the M vectors 2 , NO 3 ,...,NO r ) vectors relative to the 0th position of the fixed reference vector, ...

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Abstract

The invention provides an LTE (long term evolution) signal transmission system based on a self-adaptive regulation reference vector. The LTE signal transmission system based on the self-adaptive regulation reference vector solves the problem of mutual limitation of the transmission efficiency and the transmission bandwidth of the existing LTE system, and better solves the problem of influence of the higher modification grain on the system transmission efficiency at the same time, and the frequency band utilization rate is greatly improved. The LTE signal transmission system comprises an emitting unit, a receiving unit and a coding vector deviation relationship presetting unit, wherein the emitting unit comprises a first multi-path conversion unit, a grouping unit, a combined emitting signal generating unit and a radio frequency emitting unit in sequential connection, and the receiving unit comprises a correlator unit, a multi-path recovery unit and a second multi-path conversion unit in sequential connection.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an LTE signal transmission system based on an adaptive adjustment reference vector. Background technique [0002] LTE (Long Term Evolution) is a long-term evolution of the UMTS (Universal Mobile Telecommunications System) technical standard formulated by 3GPP (Third Generation Partnership Project). It was officially established and launched at the 3GPP Toronto TSGRAN#26 meeting in December 2004. The LTE system introduces key transmission technologies such as OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple Input Multiple Output), which significantly increases the spectral efficiency and data transmission rate (20M bandwidth 2X2MIMO in the case of 64QAM, the theoretical maximum transmission rate of the downlink is 201Mbps, about 140Mbps after excluding signaling overhead, but according to actual networking and terminal capability limitations, it is general...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L5/00
Inventor 时鸿涛
Owner QINGDAO AGRI UNIV
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