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A method, device and baseband unit for controlling peak-to-average power ratio

A peak-to-average power and power technology, applied in the field of communication, can solve the problems of mid-RF processing module missing peak signal, burning power amplifier, reducing baseband signal, etc.

Active Publication Date: 2018-08-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, there is currently no good way to reduce the PAPR of the baseband signal, which will cause some peak signals to

Method used

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  • A method, device and baseband unit for controlling peak-to-average power ratio
  • A method, device and baseband unit for controlling peak-to-average power ratio
  • A method, device and baseband unit for controlling peak-to-average power ratio

Examples

Experimental program
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Effect test

Embodiment 1

[0060] First of all, the common method of reducing the peak-to-average power ratio is to carry out in the remote radio unit (English: RemoteRadio Unit, referred to as: RRU), that is, to reduce the PAPR in the middle radio frequency stage, but the method in the embodiment of the present invention is applied In the baseband unit (English: Baseband Unit, BBU for short), the chip sequence sent to the RRU in the BBU is corrected, thereby reducing the PAPR in the chip sequence sent from the BBU to the RRU.

[0061] Such as figure 2 Shown is a flow chart of a method for controlling the peak-to-average power ratio in an embodiment of the present invention, the method comprising:

[0062] S201. Determine N pilot domains aligned at the first moment in the M dedicated physical channels of the cell;

[0063] S202. Acquire pilot symbols corresponding to each pilot domain in the N pilot domains, and generate virtual pilot symbols corresponding to each pilot symbol;

[0064] S203, perform...

Embodiment 2

[0095] Corresponding to the method for controlling the peak-to-average power ratio in Embodiment 1 of the present invention, the embodiment of the present invention also provides a device for controlling the peak-to-average power ratio, such as Figure 5 As shown, the device includes:

[0096] The determination module 501 is configured to determine, among the M dedicated physical channels of the cell, N pilot domains that are aligned at a first time, where the first time alignment indicates that the pilot domains appear at the same time in a frame of a dedicated physical channel, Wherein, N and M are positive integers;

[0097] A generating module 502, configured to obtain pilot symbols corresponding to each pilot domain in the N pilot domains, and generate virtual pilot symbols corresponding to each pilot symbol, and the pilot symbols are corresponding to the corresponding virtual pilot symbols. Pilot symbols are opposite numbers;

[0098] The processing module 503 is confi...

Embodiment 3

[0110] A baseband unit is also provided in the embodiment of the present invention, and the baseband unit includes one or more processors, memory, and one or more programs; one or more programs are stored in the memory, and are processed by one or more The controller calls and executes one or more programs from the memory;

[0111] One or more programs here are configured to perform the following steps:

[0112] In the M dedicated physical channels of the cell, N pilot domains that are aligned at the first time are determined, and the first time alignment indicates that the pilot domains appear at the same time in the frame of the dedicated physical channel, where N and M are positive integer;

[0113] Obtain the pilot symbols corresponding to each pilot domain in the N pilot domains, and generate virtual pilot symbols corresponding to each pilot symbol, the pilot symbols and the corresponding virtual pilot symbols are opposite to each other number;

[0114] performing spre...

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Abstract

Provided are a method and device for controlling the peak-to-average power ratio, the method comprising: determining N pilot frequency domains aligned at a first moment in M dedicated physical channels of a cell; acquiring a pilot frequency symbol corresponding to each pilot frequency domain from the N pilot frequency domains, and generating a virtual pilot frequency symbol corresponding to each of the respective pilot frequency symbols; performing spread spectrum and scrambling processing on each of the generated virtual pilot frequency symbols so as to generate a virtual chip respectively corresponding to each virtual pilot frequency symbol; and superimposing actual chips corresponding to the first moment and the generated virtual chips. By means of this method, virtual chips generated according to virtual pilot frequency symbols and orthogonal to actual chips can be superimposed in a base band signal, so as to effectively reduce the PAPR in the base band signal, further reduce the calculation pressure of reducing the PAPR in intermediate radio frequency, provide an effective protection for a power amplifier, and improve the security and stability of the whole UMTS.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and baseband unit for controlling peak-to-average power ratio. Background technique [0002] Currently, the downlink transmission signal of the Universal Mobile Telecommunications System (English: Universal Mobile Telecommunications System, referred to as: UMTS) includes the signal of the common channel of the community and the dedicated physical Channel (English: Dedicated PhysicalChannel, referred to as: DPCH) signal. The DPCH of each user has a chip offset (English: chipoffset) parameter. The chipoffset parameter represents the starting moment of a frame in DPCH. The value of the chipoffset parameter can be expressed as 256N (N is an integer, and 0≤N≤149). The chipoffset parameters of multiple DPCHs are aligned, and the chipoffset parameter alignment is defined as the chipoffsets of multiple DPCHs are equal or the remainder after dividing chi...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L27/26
Inventor 王新征
Owner HUAWEI TECH CO LTD