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Digital audio broadcast receiver having simply implementable FFT processor

An operation method and receiver technology, which are applied in the directions of digital audio broadcasting, broadcasting system reception, broadcasting broadcasting, etc., can solve the problems of implementation complexity, and achieve the effect of simplifying hardware implementation and simplifying operation control.

Inactive Publication Date: 2004-08-11
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this algorithm structure that combines the Radix-2 structure and the Radix-4 structure also has the problem of complicating the implementation.

Method used

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  • Digital audio broadcast receiver having simply implementable FFT processor
  • Digital audio broadcast receiver having simply implementable FFT processor
  • Digital audio broadcast receiver having simply implementable FFT processor

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Embodiment Construction

[0037] Detailed description of preferred embodiments

[0038] Hereinafter, the present invention will be described in more detail.

[0039] The fast Fourier transform processor used in the European standard digital audio broadcast receiver according to the embodiment of the present invention has the following characteristics:

[0040] (1) To perform FFT calculations, the same Radix-4 algorithm is implemented for various input data modes such as 2048, 1024, 256, and 512. In order to simplify the realization of the algorithm unit used in the FFT processor.

[0041] (2) The address generator generates 4096 addresses that apply the Radix-4 algorithm to various FFT modes.

[0042] (3) Use FFT duality to interpolate 2048, 1024, 256 and 512 input data of various FFT modes into 4096 data to avoid increasing the memory for fast Fourier transform processor based on 4096 addresses .

[0043] (4) Carry out the Radix-4 algorithm using the interpolated 4096 data, and apply the digital inversion...

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Abstract

Disclosed is a European digital audio broadcast receiver having a simply implementable fast Fourier transform processor and an operation method therefor. A digital audio broadcast receiver having diverse fast Fourier transform (FFT) modes based on sizes of transmitted data has an address generator for generating a predetermined number of write addresses and read addresses, a fast Fourier transform (FFT) processor for repeating data of FFT modes to generate a predetermined number of data and implementing a fast Fourier transform (FFT) by using the predetermined number of data, and a controller for controlling the address generator to the write addresses and the read addresses according to operations of the FFT processor.

Description

Technical field [0001] The present invention relates to a European standard digital broadcast receiver, in particular to a fast Fourier transform (FFT) processor. This application is based on Korean Patent Application No. 2000-79293, which is hereby quoted for reference. Background technique [0002] The transition of broadcasting method from analog method to digital method is the development trend of digital technology. Some countries have used digital transmission for radio broadcasting, while others are preparing for digital transmission. The European standard Digital Audio Broadcasting (DAB) applies Orthogonal Frequency Division Multiplexing (OFDM) to broadcast transmission, and, depending on the amount of input data, the Fast Fourier Transform (FFT) processor applied to OFDM has features such as FFT modes such as 256, 512, 1024 and 2048. [0003] The traditional fast Fourier transform processor contains different storage address generation algorithms and data butterfly opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/015G06F17/14H04B1/16H04H20/00H04H20/72H04H40/27H04J11/00H04L27/26
CPCH04H2201/20H04L27/2628H04H40/27G06F17/142H04H20/72H04N7/015
Inventor 李廷相
Owner SAMSUNG ELECTRONICS CO LTD
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