A method and device for removing peaks of broadband signals

A signal and wave peak technology, which is applied in the field of broadband signal wave peak removal, can solve the problems of missing clipping and over clipping, and achieve effective peak clipping effects, small changes, and no deterioration of ACPR

Active Publication Date: 2011-12-28
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

from figure 2 It can be seen from the figure that the existing digital intermediate frequency peak clipping technol

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  • A method and device for removing peaks of broadband signals
  • A method and device for removing peaks of broadband signals
  • A method and device for removing peaks of broadband signals

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[0040] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0041] In order to achieve the purpose of the present invention, the present invention discloses a method for removing the peak of a broadband signal, which combines image 3 As shown, the method includes the following steps:

[0042] S301: After the multi-carrier signals of the first frequency band and the second frequency band complete the phase rotation of the physical layer of the respective frequency bands at the physical layer, digital intermediate frequency filtering is performed, and after the sp...

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Abstract

The embodiment of the invention provides a crest reduction method of a broadband signal. The method comprises the following steps: multi-carrier signals in first and second frequency bands are subjected to digital intermediate-frequency filter after completing physical layer phase rotation at each frequency bands in a physical layer, and spectrums are moved to the first and second frequency bands respectively after the spectrums of the signals in the first and second frequency bands are molded respectively; after the moved multi-carrier signals are superposed, the multi-carrier signal superposition is completed in digital intermediate-frequency; and the superposed signals are subjected to multi-band, multi-carrier and multi-mode crest reduction processing crest factor reduction (CFR) operation, and the multi-carrier signals, subjected to crest reduction, are output. The embodiment of the invention also provides a crest reduction device of the broadband signal, which comprises a spectrum moving module, a superposition module and a crest reduction module. According to the method and the device, a multi-carrier multi-band algorithm is acquired, which can adapt to the TD (time division) multi-band crest reduction and be applied to a TD and LTE (long term evolution) mixed platform with effective crest reduction effect without exacerbated ACPR (adjacent channel power ratio), thus having the higher practical value.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular, the present invention relates to a method and a device for removing peaks of broadband signals. 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, and it has been fully supported by CWTS and 3GPP. TD-SCDMA is a mobile communication technology that integrates the technical advantages of CDMA, TDMA and FDMA, has large system capacity, high frequency spectrum utilization, and strong anti-interference ability. It uses technologies such as smart antenna, joint detection, relay switching, synchronous CDMA, software radio, low chip rate, multiple time slots, variable spread spectrum system, and adaptive power adjustment. [0003] TD-SCDMA broadb...

Claims

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Application Information

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IPC IPC(8): H04L27/26
Inventor 熊军
Owner DATANG MOBILE COMM EQUIP CO LTD
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