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A broadband intermediate frequency design method and device

A design method and intermediate frequency technology, applied in the field of digital communication, can solve problems such as no cost competitive advantage, many hardware resources, and great difficulty, and achieve the effect of simple structure, obvious effect, and small changes

Inactive Publication Date: 2011-12-07
CHINA ACAD OF TELECOMM TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0013] The first and second solutions consume a lot of hardware resources, are bulky, and have no cost competitive advantage
The third option is more difficult

Method used

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  • A broadband intermediate frequency design method and device
  • A broadband intermediate frequency design method and device
  • A broadband intermediate frequency design method and device

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0051] In order to achieve the purpose of the present invention, the present invention discloses a broadband intermediate frequency design method, combining Figure 8 As shown, the method includes the following steps:

[0052] S801: Perform unified phase rotation on the physical layer of the multi-carrier signals of the first frequency band and the second frequency band, and after completing DUC (Digital Up Converter, digital up conversion) spectrum shaping and spectrum shifting, superimpose the signals of the two frequency bands.

[00...

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Abstract

The embodiment of the present invention proposes a broadband intermediate frequency design method, including: performing unified phase rotation on the physical layer of the multi-carrier signals of the first frequency band and the second frequency band, and after completing DUC spectrum shaping and spectrum shifting, the two frequency bands Signal superposition; perform CFR peak clipping operation on the superimposed multi-carrier signals of the first frequency band and the second frequency band; perform DPD digital pre-distortion processing on the signal after peak clipping. The present invention also proposes a broadband intermediate frequency design device, including: a signal superposition module, a peak clipping module and a predistortion module. According to the method and device provided by the embodiments of the present invention, the F+A frequency band can be implemented on existing products and the requirements for hardware programmable chips are minimized. The CFR effect is relatively obvious, and the RF link structure is simple due to the adoption of the ZIF scheme or the separate sampling of the I / Q channels.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular, the present invention relates to a broadband intermediate frequency design method and device. Background technique [0002] TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access technology) is one of the third-generation mobile communication space interface technical specifications officially released by ITU. It has been approved by CWTS (China Wireless Telecommunications Standard Group, China Wireless Communication Standard Research Group) and 3GPP (3rd Generation Partnership Project, the third generation partnership project) comprehensive support, is China Telecom's first complete communication technology standard in a century, and is an alternative to UTRA-FDD. TD system integrates CDMA (Code Division Multiple Access, Code Division Multiple Access), TDMA (Time Division Multiple Access, Time Division...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49H04L27/26
Inventor 熊军孙华荣房治国倪慧娟
Owner CHINA ACAD OF TELECOMM TECH
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