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Method for scheduling multiplying units and offset pulse generator

A technology for offsetting pulses and multipliers, applied in the field of communication, can solve problems such as error signal discarding, affecting PC-CFR output PAR performance, and insufficient allocation of multiplier resources.

Inactive Publication Date: 2015-06-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The inventors found that in related technologies, multiplier resource scheduling adopts the FIFO (First In First Out) scheduling method. Due to the small number of multiplier resources, the situation that the multiplier resources are not enough to be allocated often occurs. At this time, if the CPG (Clock PulseGenerator, clock pulse generator) receives an error signal, the error signal will be discarded, if the magnitude of the discarded error signal is large, it will affect the PC-CFR output PAR performance

Method used

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  • Method for scheduling multiplying units and offset pulse generator
  • Method for scheduling multiplying units and offset pulse generator
  • Method for scheduling multiplying units and offset pulse generator

Examples

Experimental program
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Embodiment 1

[0021] figure 1 A flow chart of a method for scheduling multipliers according to an embodiment of the present invention is shown, the method is applied in the process of generating a cancellation pulse, and the method includes the following steps:

[0022] Step S102, according to the relationship between the current error signal and the next error signal, the flag of the current error signal is set as a discarding flag or a non-discarding flag;

[0023] The flag of the error signal in this embodiment occupies 1 bit, and the flag can be set before or after the error signal, as long as the offset pulse generator can identify it. For convenience, the discarding flag can be set to 0, and the non-discarding flag can be set to 1.

[0024] When setting the identification of the error signal, it is only necessary to compare the current error signal with the next adjacent error signal, for example: if the amplitude of the current error signal is greater than or equal to the amplitude ...

Embodiment 2

[0037] This embodiment is illustrated by taking the implementation on FPGA as an example, wherein the identification of the error signal is set as follows:

[0038] First, the error signal is sequentially delayed by the length of the filter coefficient for clock cycles. When an error signal is found, it is judged whether the distance between the error signal and the next error signal is smaller than the length of the filter coefficient. If so, the amplitude is greater than the amplitude of the next error signal. , set the flag of the error signal to 1, such as figure 2 As shown; if the distance between the error signal and the next error signal is less than the filter coefficient length, and the magnitude of the error signal is smaller than the magnitude of the next error signal, set the flag of the error signal to 0, such as image 3 shown; if there is no next error signal within the filter coefficient length range, the error signal is also marked as 1, such as Figure 4 sh...

Embodiment 3

[0047] Figure 6 A structural block diagram of a canceling pulse generator according to an embodiment of the present invention is shown, including:

[0048] Mark setting module 62, set the sign of current error signal according to the relationship between current error signal and next error signal as discarding mark or non-discarding mark;

[0049] Multiplier scheduling module 64, for when the number of multipliers is less than or equal to specified value (such as 1 or 2), judge whether the sign of current error signal is to discard sign, if yes, discard current error signal, if not, for The current error signal is assigned a multiplier.

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Abstract

The invention discloses a method for scheduling multiplying units and an offset pulse generator, belonging to the field of communication. The method for scheduling the multiplying units comprises the following steps of: setting an identifier of a current error signal to be a discard identifier or a non-discard identifier according to the relationship between the current error signal and a next error signal; and when the number of the multiplying units is smaller than or equal to a designated value, judging the identifier of the current error signal is the discard identifier or not, if so, discarding the current error signal, and if not, distributing one multiplying unit for the current error signal. According to the invention, the problem that larger peak value signals are discarded when multiplying unit resources are in shortage is solved, and furthermore, the multiplying unit resources can be ensured to be preferentially occupied by the larger-peak-value signals when the multiplying unit resources are in shortage.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for scheduling a multiplier and an offset pulse generator. Background technique [0002] Since the mobile communication system has developed into a multi-carrier system, the use of non-constant envelope modulation will cause the signal input to the power amplifier to have a large peak-to-average ratio. However, the linear range of the power amplifier is limited. In order to achieve linear amplification of the power amplifier, the power backoff method can be used. way, but this way limits the efficiency of the power amplifier. [0003] When the input signal of the power amplifier has a large peak-to-average ratio, in order to overcome the nonlinear influence of the power amplifier, technologies such as power backoff or linearization of the power amplifier are generally used. If the input signal of the power amplifier has a small peak-to-average ratio, the backoff of the power a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/01G06F7/52
Inventor 曾峰
Owner ZTE CORP