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Device of LTE-A MIMO signal carrier aggregation demodulation

A signal carrier and carrier technology, applied in the modulation carrier system, digital transmission system, electrical components, etc., can solve the problems of low precision and inability to realize real-time demodulation

Inactive Publication Date: 2019-03-29
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing LTE, the maximum bandwidth of a single cell is limited to 20MHz. In order to enable the UE to obtain a greater uplink and downlink rate, the carrier aggregation technology is used. Currently, there are relatively few devices that support carrier aggregation demodulation of LTE-A MIMO signals. Less, low precision, unable to achieve real-time demodulation

Method used

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  • Device of LTE-A MIMO signal carrier aggregation demodulation

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Embodiment Construction

[0020] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0021] Such as figure 1 As shown, a device for LTE-A MIMO signal carrier aggregation demodulation, including sequentially connected radio frequency module, intermediate frequency module, baseband module and main control module;

[0022] The RF module mixes, filters, and adjusts the power of the input signal to obtain a high-precision baseband signal; the RF module mixes the input signal with the local oscillator signal to generate a mixed frequency signal, and the mixed frequency signal is filtered by a switch filter and passed through an attenuator Perform power adjustment, and send the signal after power adjustment to the intermediate frequency module.

[0023] The intermediate frequency module realizes 8-channel real-time transmission of the baseband signal of the radio frequency input module through the SRIO4x protocol...

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Abstract

The invention discloses a device of LTE-A MIMO signal carrier aggregation demodulation, and particularly relates to the field of mobile communication technology. The device solves the shortcomings that currently equipment supporting LTE-A MIMO signal carrier aggregation demodulation is lesser, precision is low, and real-time demodulation cannot be realized. The device of LTE-A MIMO signal carrieraggregation demodulation comprises a radio frequency module, an intermediate frequency module, a baseband module and a main control module which are sequentially connected. The radio frequency modulecarries out frequency mixing, filtering and power adjustment on input signals to obtain baseband signals of high precision. The intermediate frequency module realizes 8-way real-time transmission on the baseband signals of a radio frequency input module through an SRIO4x protocol, and transforms aggregated carriers into independent time domain signals. The baseband module parses data, sends the same to an original code stream, and transmits the same to the main module through a network port. The main control module receives the data, which are transmitted by the baseband module, through the network port, and carries out calculations for display and partial test cases.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a device for carrier aggregation demodulation of an LTE-A MIMO signal. Background technique [0002] LTE is a global standard based on OFDMA technology and formulated by 3GPP. It includes FDD and TDD modes for paired spectrum and unpaired spectrum. MIMO (Multiple Input Multiple Output) refers to the use of Multiple transmitting antennas and receiving antennas enable signals to be transmitted and received through multiple antennas at the transmitting end and receiving end, thereby improving communication quality. It can make full use of space resources, realize multi-transmission and multi-reception through multiple antennas, and can double the system channel capacity without increasing spectrum resources and antenna transmission power. [0003] CC (Carrier Aggregation) refers to the aggregation of multiple carriers together to obtain a larger transmission ba...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/2649H04L27/265
Inventor 刘小刚凌云志铁奎汤瑞
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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