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Data input method and device and data conversion method and device

A technology of input method and conversion method, applied in the field of data input, data conversion method and device, capable of solving problems such as data storage address conflicts

Active Publication Date: 2021-05-18
SPREADTRUM SEMICON(CHENGDU) CO LTD
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Problems solved by technology

[0003]However, in the case of meeting the requirements of 5G's ultra-low latency characteristics and resource consumption as little as possible, the Fourier transform processor that is not a power of 2 During data conversion, data storage address conflicts are prone to occur

Method used

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  • Data input method and device and data conversion method and device
  • Data input method and device and data conversion method and device
  • Data input method and device and data conversion method and device

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Embodiment Construction

[0028] As mentioned in the background technology, in the case of meeting the requirements of 5G's ultra-low latency characteristics and resource consumption as little as possible, non-power-of-two Fourier transform processors are prone to data storage when performing data conversion. The problem of address conflicts.

[0029] In the technical solution of the present invention, for the discrete Fourier transform whose number of points is not a power of 2, decompose the number of sampling points, thereby obtaining the first decomposition formula and the second decomposition formula for calculating the sequence of input data and the sequence of output data , respectively use the number of possible values ​​of each first coefficient as a small point number base to perform m+1 rounds of calculations, and store the calculation results as the output data in each round in the storage address of the memory, so as to obtain the discrete Fourier transform Transformed final output data; thi...

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Abstract

The invention discloses a data input method, a data conversion method and a data conversion device. A discrete Fourier transform calculation method comprises the following steps of: determining a sampling point number of discrete Fourier transform; decomposing the sampling point number based on a prime factor algorithm; and writing the input data of which the number is equal to the sampling point number into the memory, wherein the memory address of the input data comprises the memory block identifier and the relative memory address. According to the technical scheme, address conflicts during data input can be avoided, and the concurrency of operation can be increased, so that the processing time is remarkably shortened, and the operation time delay is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data input and data conversion method and device. Background technique [0002] New Radio is a fifth generation mobile communication system (5th generation mobile networks or 5th generation wireless systems, 5G) led by the 3rd Generation Partnership Project (3GPP). The NR system standard protocol requires the realization of a large number of Fourier transforms with non-2 exponential power points, and the discrete Fourier transform (DFT) spread-spectrum Orthogonal Frequency Division (Orthogonal Frequency Division) realized by it Multiplexing, OFDM), also known as DFT-S-OFDM technology, which requires a Fourier transform processor with multiple points and not a power of 2. [0003] However, in the case of meeting the requirements of 5G's ultra-low latency characteristics and resource consumption as little as possible, non-power-of-two Fourier transform processors are pron...

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Application Information

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IPC IPC(8): H04L27/26G06F17/14G06F12/02
CPCH04L27/2628G06F17/144G06F12/023G06F2212/174
Inventor 顾明飞
Owner SPREADTRUM SEMICON(CHENGDU) CO LTD
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