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Adaptive adjustment reference vector-based signal transmission method for LTE (long term evolution) system

A technology of self-adaptive adjustment and reference vector, applied in transmission system, multi-frequency code system, digital transmission system, etc.

Inactive Publication Date: 2015-04-08
QINGDAO AGRI UNIV
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  • Abstract
  • Description
  • Claims
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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

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  • Adaptive adjustment reference vector-based signal transmission method for LTE (long term evolution) system
  • Adaptive adjustment reference vector-based signal transmission method for LTE (long term evolution) system
  • Adaptive adjustment reference vector-based signal transmission method for LTE (long term evolution) system

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Embodiment Construction

[0066] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0067] According to an embodiment of the present invention, a signal transmission method based on an adaptive adjustment reference vector in an LTE system is proposed, as shown in the attached figure 1 As shown, the method includes the following steps:

[0068] S1. The preset encoding vector offset relationship; specifically includes:

[0069] The transmitting unit and the receiving unit pre-set the same M-dimensional pseudo-noise...

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Abstract

The invention discloses an adaptive adjustment reference vector-based signal transmission method for an LTE (long term evolution) system, which solves the problem that the transmission efficiency and the transmission bandwidth of an existing LTE system are limited by each other, relatively well solves the problem of influence on the transmission efficiency of the system caused by relatively high modulation gain, and greatly improves the utilization rate of a frequency band. The method comprises the following steps: S1, presetting an encoding vector offset relationship; S2, carrying out multipath conversion on to-be-transmitted data, so as to obtain Q paths of signals; S3, grouping the Q paths of signals and forming a combined transmission signal; S4, transmitting the combined transmission signal after radio conversion; S5, receiving the transmission signal under a random hash noise channel; S6, demodulating the received signal; S7, restoring Q paths of data information from the demodulated signal; S8, carrying out multi-path to single-path conversion on the received Q paths of data information, so as to obtain Q bit information.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a signal transmission method based on an adaptive adjustment reference vector in an LTE system. 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, i...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L1/00
Inventor 李青花
Owner QINGDAO AGRI UNIV
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