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Digital up converter and digital down converter of long term evolution (LTE) radiofrequency remote end unit and flexible bandwidth configuration method

A technology of digital up-conversion and protocol analysis unit, which is applied to electrical components, modulation conversion of semiconductor devices with at least two electrodes, wireless communication, etc. It can solve the problems of high resource consumption and high power consumption, and achieve simple architecture implementation. The effect of low power consumption and high multiplexing

Active Publication Date: 2013-03-13
WUHAN POST & TELECOMM RES INST CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

figure 2 and image 3 Respectively, the bandwidth-configurable up-converter and down-converter architecture of the traditional method consumes more resources and consumes more power

Method used

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  • Digital up converter and digital down converter of long term evolution (LTE) radiofrequency remote end unit and flexible bandwidth configuration method
  • Digital up converter and digital down converter of long term evolution (LTE) radiofrequency remote end unit and flexible bandwidth configuration method
  • Digital up converter and digital down converter of long term evolution (LTE) radiofrequency remote end unit and flexible bandwidth configuration method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Digital up-converter functional module of the present invention such as Image 6 As shown, the digital up-converter of the LTE radio frequency remote unit is composed of four interpolation filters, one-two switches, and one-three switches. The baseband data link processing protocol analysis unit in the RRU is connected with the high-speed serial parallel of the FPGA The conversion module, the first interpolation filter, the one-two switch, the one-three switch, and the third interpolation filter are connected, and the first interpolation filter is connected with the one-two switch, the second interpolation filter, and the three-choice A switch and the fourth interpolation filter are connected, the fourth interpolation filter is connected with the peak clipping module of the FPGA, and the third interpolation filter is connected with the three-choice one switch an...

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Abstract

The invention relates to a digital up converter and a digital down converter of a long term evolution (LTE) radiofrequency remote end unit and a flexible bandwidth configuration method. Defects existing in the conventional method are overcome so as to ensure that bandwidths of the digital up converter and the digital down converter can be configured as cores. An implementation method of the digital up converter and the digital down converter has high generality, realizes a framework easily and contributes to system stability. The digital up converter and the digital down converter are beneficial to reasonable distribution of a field programmable gata array (FPGA) and smooth upgrading of a remote radio unit (RRU) system.

Description

technical field [0001] The invention relates to a digital up-converter, a digital down-converter and a bandwidth flexible configuration method used in an LTE remote radio frequency unit system. Background technique [0002] In the distributed base station system, the role of RRU (Remote Radio Unit, remote radio unit) is mainly to complete the modulation from baseband carrier data to radio frequency signal, and the demodulation from radio frequency signal to baseband carrier data. Band Unit, baseband unit) as attached figure 1 shown. [0003] In order to adapt to the continuous development of mobile communication technology, various operators have put forward higher and higher requirements for RRU. In addition to requiring stable and reliable product functions, software and hardware are also required to support smooth upgrades, strong compatibility, low cost, and environmental protection. This makes the RRU must use a software radio platform in the way of implementation, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03D7/12H04W88/08
Inventor 陈付齐杜仲周世军江浩洋曹雨王冉邢凌燕
Owner WUHAN POST & TELECOMM RES INST CO LTD