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Method and device for eliminating signal peak power

A signal peak and power technology, which is applied in the shaping network of the transmitter/receiver, baseband system components, multi-frequency code system, etc., can solve the problems of peak power reduction, missing clipping, and lack of peak clipping for broadband applications. Achieve the effect of reducing multiplier resources and cutting off peak power points

Active Publication Date: 2012-03-21
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0012] 2) From the perspective of time domain, there are many peak power points in a continuous period of time, or there are a large number of signals exceeding the threshold in a continuous period of time, and the existing PC-CFR peak clipping is for a peak power point The signal needs a peak clipping pulse generator CPG, and there will be more probability of missed clipping without a large number of CPGs
[0013] It can be seen that using the existing PC-CFR can not cut the peak power well
The application of broadband RRU will inevitably become the mainstream. The application of E-band 50M (2320MHz-2370MHz) and subsequent D-band (2570MHz-2620MHz) will introduce a larger bandwidth requirement. Peak method and apparatus

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  • Method and device for eliminating signal peak power
  • Method and device for eliminating signal peak power
  • Method and device for eliminating signal peak power

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Embodiment Construction

[0050] The method and device for cutting signal peak power, the signal transmission method, the radio frequency remote module RRU and the base station proposed by the present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0051] In order to solve the problem of eliminating the signal peak power point when expanding to broadband such as extending to 40-60MHz under the expansion mode of the single-band working bandwidth, the present invention provides a method for eliminating the signal peak power, such as figure 2 shown, including:

[0052] Step S201, acquiring the amplitude and phase of the complex signal obtained after multi-carrier signal superposition;

[0053] In the broadband application system, the base station modulates the multiple signals to be sent onto multiple carriers to obtain multi-carrier signals through baseband processing when transmitting signals; superimposes the multi-carrier signals to ob...

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Abstract

The invention relates to the communication technical field, and discloses a method and a device for eliminating signal peak power. The method for eliminating the signal peak power comprises the following steps that: acquiring amplitude and a phase of a complex-number signal obtained after superimposing multiple carrier signals; detecting a peak value according to the acquired amplitude and a set threshold, and seeking a noise signal according to the peak value detection result and the acquired phase; completing the frequency shaping of the noise signal through the multi-grade noise shaping filtering processing of the sought noise signal; and completing the elimination of the signal peak power by processing counter-clipping of the noise signal after the frequency spectrum shaping and the complex-number signal. By adopting multi-grade noise shaping technology, the method and the device for eliminating the signal peak power are not only suitable for the signal with broadband or ultra-wide-band continuous frequency band, but also are suitable for the signal with mixed mode of common mode of time division-synchronous code division multiple access long term evolution (TD-LTE) and time division-synchronous code division multiple access (TD-SCDMA), or the method and the device can effectively eliminate a peak power point of a single LTE (Long Time Evolution) signal.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and a device for reducing signal peak power of a signal. Background technique [0002] At present, the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) system has been widely used in the 3G network. In order to meet the ever-increasing demand for data transmission, only using TD-SCDMA system bandwidth can no longer meet user needs, and the application of broadband technology has become an inevitable trend. [0003] The base station includes two parts: the near-end unit, BBU (Building Base band Unite, indoor baseband processing unit) and the remote unit, RRU (Radio Remote Unit, radio frequency remote unit). The application of broadband RRU technology mainly adopts single-band working bandwidth expansion Technical solutions, such as extending the currently supported working bandwidth...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/03
Inventor 熊军杨明李大庆
Owner DATANG MOBILE COMM EQUIP CO LTD
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