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Data processing device and method

A technology for data processing equipment and data symbols, which is applied in electrical digital data processing, digital data processing components, digital transmission systems, etc., and can solve the problems of terrestrial broadcast channel fading in time and frequency domains

Active Publication Date: 2009-08-19
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Terrestrial broadcast channels may suffer from time and frequency fading

Method used

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  • Data processing device and method
  • Data processing device and method
  • Data processing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] figure 1 An example block diagram of an OFDM transmitter is provided that may be used to transmit video images and audio signals, eg, in accordance with the DVB-T2 standard. exist figure 1 In , a program source generates data to be transmitted by an OFDM transmitter. Video encoder 2 , audio encoder 4 and data encoder 6 generate video, audio and other data to be transmitted and feed to program multiplexer 10 . The output of program multiplexer 10 forms a multiplexed stream with other information needed to deliver video, audio and other data. The program multiplexer 10 provides the streams on connection channels 13 . There may be many such multiplexed streams, which are fed to different branches A, B, etc. For brevity, only branch A will be described.

[0073] like figure 1 As shown, the OFDM transmitter 11 receives the stream at the multiplexer adaptation and energy spreading block 20 . The multiplexer adaptation and energy dispersal block 20 randomizes the data a...

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PUM

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Abstract

A data processing device transmits the data bits on the predetermined quantity carrying wave signal of the OFDM sign. The data processing device comprises a parity interweaver for operating the pairs of LDPC coding data. The data bits are obtained by the parity matrix LDPC detecting with the LDPC code. The parity matrix has a ladder-type structure interweaving the LDPC code data to the different parity bit position. The mapping unit maps the parity interweaving bit to the data signs corresponding to the modulating signs of the solution. The sign interweaver reads the quantity signs to the sign interweaving store, carrying out the data sig of the sign interweaving store reading the order with different reading; the order address set is confirmed. The address set is generated by the address generator.

Description

technical field [0001] The present invention relates to a data processing method and apparatus for transmitting data bits through a plurality of subcarrier signals of an Orthogonal Frequency Division Multiplexing (OFDM) symbol. [0002] The invention also relates to a data processing method and apparatus for recovering data bits from a plurality of subcarrier signals of an OFDM symbol to form an output bit stream. [0003] Embodiments of the present invention may provide an OFDM transmitter / receiver. Background technique [0004] The Digital Video Broadcasting-Terrestrial standard (DVB-T) transmits data representing video images and sound to receivers by broadcasting wireless communication signals using Orthogonal Frequency Division Multiplexing (ODFM). The DVB-T standard has two well known modes, 2k and 8k modes. 2k mode offers 2048 subcarriers, while 8k mode offers 8192 subcarriers. Also, for the Digital Video Broadcasting-Handheld standard (DVB-H), a 4k mode has been p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L1/00H04N7/24
CPCH03M13/2906H04L27/2647H04L27/2626H03M13/2742H03M13/276H03M13/2764H03M13/152H03M13/271H03M13/1102H03M13/27G06F7/584H04L27/2601H04N7/24
Inventor M·P·A·泰勒S·A·阿通西里T·约科卡瓦M·亚马莫托
Owner SONY CORP
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