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Reconfigurable universal fixed floating-point FFT processor

A processor, fixed-point floating-point technology, applied in electrical digital data processing, special data processing applications, digital data processing components and other directions, can solve the problem of single fixed-point operation or floating-point operation of FFT processor, and achieve high throughput rate , The effect of large resource reuse and resource saving

Inactive Publication Date: 2017-07-14
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing FFT processors generally only support a single fixed-point operation or floating-point operation

Method used

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  • Reconfigurable universal fixed floating-point FFT processor
  • Reconfigurable universal fixed floating-point FFT processor
  • Reconfigurable universal fixed floating-point FFT processor

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Embodiment Construction

[0030] The solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, the fixed-floating-point general-purpose FFT processor of this embodiment is composed of a top-level control module, a reconfigurable computing circuit module, and an ordering module. Configuration information and data are input from the top-level control module, and the top-level control module sets the other two modules according to the configuration information, determines the data path, and configures the working mode of the reconfigurable computing circuit module. Finally, after the input data is processed by the reconfigurable computing circuit module, it is sent to the sorting module, and the result of the inverted sequence is readjusted to the sequence and output. The whole process is full flow.

[0032] Such as figure 2 As shown, the reconfigurable computing circuit module is composed of 8-level computing...

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Abstract

The invention provides a reconfigurable universal fixed floating-point FFT processor, which can realize not only 18-bit fixed-point FFT operation but also 32-bit single-precision floating-point FFT operation. According to the processor, a fixed-point arithmetic device (comprising a multiplier and an adder) is separated from a main body structure and can be reconfigured as a single-precision floating-point arithmetic device. A processor main body finishes fixed-point or floating-point FFT operation by calling the fixed-point arithmetic device or the single-precision floating-point arithmetic device formed by reconfiguration. The processor adopts a mixed base flow water structure and supports not only fixed floating-point calculation but also a configurable calculation point number, so that the universality of the processor is effectively improved under the condition of ensuring accuracy and data throughput.

Description

technical field [0001] The invention discloses a fixed-floating-point universal FFT processor, which belongs to the field of digital signal processing. Background technique [0002] The Fast Fourier Transform (FFT) algorithm is at the core in the fields of radar microwave detection, communication, and image, and it is also the part with a large amount of computation in related processing algorithms. The continuous improvement of application system requirements and the development of integrated circuit technology put forward higher and higher requirements for FFT processors. [0003] Classified by the data type used in the operation, the FFT operation can be divided into fixed-point FFT operation and floating-point FFT operation. Fixed-point FFT operations require less computing resources, but relatively low precision; floating-point FFT operations require more computing resources, but high precision. They each have advantages and disadvantages for their application. But t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/14G06F7/57
CPCG06F7/57G06F17/142
Inventor 潘红兵王晨曦王宇宣秦子迪李丽李伟何书专
Owner NANJING UNIV
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