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CPG resource scheduling method and device

A scheduling method and resource technology, applied in the modulation carrier system, digital transmission system, electrical components, etc., can solve the problems of peak omission, low GPG utilization rate, ACP and EVM index deterioration, etc.

Active Publication Date: 2021-05-18
联想未来通信科技(重庆)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Since the CPG of each level of CFR is fixed to be used by this level, when all the CPGs of one level are occupied, if another peak signal is input into the CFR entrance of this level, the peak value will be missed, while other levels still have Idle CPGs cannot be used, resulting in low GPG utilization;
[0006] 2. When the peak missing phenomenon occurs in the last stage of CFR, the signal peak will be output from the last stage of CFR, making the signal exceed the saturation point of the power amplifier, which will lead to the deterioration of ACP and EVM indicators

Method used

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Embodiment 1

[0050] Figure 4 A schematic block diagram of a multi-level cascaded CFR structure is shown, and the system includes: a CFR cascading unit composed of at least two levels of CFR unit cascading, a CPG shared resource pool, and an arbitration allocation unit. The CPG shared resource pool includes at least two CPGs, such as Figure 4 CPG_share1, CPG_share2, ..., CPG_sharek and so on shown in. In the CFR cascading unit, the output terminals of the adjacent previous CFR units are connected to the input terminals of the subsequent CFR units, and the CFR units of all levels in the CFR cascading units can share the CPG resources in the CPG shared resource pool. certainly, Figure 4 Only two levels of CFR units are shown in the figure, and more can be expanded in practical applications. The cascading method of multiple CFR units is the same as Figure 4 The cascading shown in is similar.

[0051] by Figure 4 The two-stage CFR unit cascade shown as an example, Figure 4 The CPG r...

Embodiment 2

[0061] A method for scheduling CPG resources applied to CFR units provided by an embodiment of the present invention, such as Figure 5 As shown, it includes: the peak factor reduction CFR cascade unit is composed of at least two levels of CFR unit cascades, the output of the adjacent previous level of CFR units in the CFR cascade unit is connected to the input of the next level of CFR units, and the CFR The CFR units at all levels in the cascade unit share the CPG shared resource pool;

[0062] Step 501, generate a peak noise signal and a corresponding cancellation generated pulse signal according to the original complex signal received from the input port of the CFR unit, distribute the generated peak noise signal to the corresponding port in the complex multiplication module, and bind The cancellation generated pulse signal of the allocated port number is sent to the arbitration allocation unit;

[0063] Step 502, after the receiving arbitration allocation unit allocates a...

Embodiment 3

[0068] An embodiment of the present invention provides a method for scheduling CPG resources applied to arbitration allocation units, such as Image 6 shown, including:

[0069] Step 601 , receiving the cancellation generated pulse signal from the CFR unit, and the cancellation generated pulse signal is bound with the port number of the complex multiplication module associated with the peak noise signal uniquely corresponding to the cancellation generated pulse signal.

[0070] Step 602: According to the occupation of CPGs in the CPG shared resource pool, distribute the received cancellation generation pulse signal to the currently idle CPGs.

[0071] Step 603: After controlling the allocated CPG to generate the cancellation pulse coefficient sequence according to the cancellation generation pulse signal, send the generated cancellation pulse coefficient sequence to the port of the complex multiplication module corresponding to the bound port number.

[0072] Among them, the ...

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Abstract

The invention discloses a method for scheduling offset pulse processing unit (CPG) resources, which comprises the following steps of: generating a peak noise signal and a corresponding offset generation pulse signal according to an original complex signal received from an input port of a CFR unit, and distributing the generated peak noise signal to a corresponding port in a complex multiplication module, then sending the cancellation generation pulse signal bound with the allocated port number to the arbitration allocation unit; receiving a cancellation pulse coefficient sequence which is sent to a corresponding port in the complex multiplication module through the allocated CPG after the arbitration allocation unit allocates the idle CPG in a CPG shared resource pool for the cancellation generation pulse signal; and generating a cancellation pulse sequence according to the peak noise signal received by the corresponding port in the complex multiplication module and the cancellation pulse coefficient sequence. According to the invention, the CPG sharing resource pool is shared by the cascaded CFR units, so that the utilization rate of the CPG is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a scheduling method and device for canceling pulse processing unit (CPG, ClockPulse Generator) resources. Background technique [0002] In wireless communication remote radio unit (RRU, Remote Radio Unit) equipment, in order to improve adjacent channel power (ACP, Adjacent Channel Power) and vector magnitude error (EVM, Error Vector Magnitude) indicators to improve power amplifier efficiency, the use of crest factor reduction ( CFR, Crest Factor Reduction) algorithm to reduce the peak-to-average ratio of the signal. The CFR algorithm using peak pulse cancellation has a very small spectrum spread and is currently the most commonly used peak cancellation algorithm. This algorithm is based on the principle of linear systems and uses the idea of ​​signal superposition, that is, by generating a signal opposite to the processed signal and The original signals ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2623
Inventor 李科
Owner 联想未来通信科技(重庆)有限公司