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Digital broadcasting system transmitter and method

A sending device, digital broadcasting technology, applied in broadcast monitoring/testing/troubleshooting devices, orthogonal multiplexing systems, high-definition television systems, etc., can solve problems such as inappropriateness, and achieve improved error correction coding performance effect

Inactive Publication Date: 2004-04-21
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since ARQ requires a back channel that allows the receiver to send a retransmission request signal to the transmitter, this method is not suitable for use in digital broadcasting

Method used

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  • Digital broadcasting system transmitter and method
  • Digital broadcasting system transmitter and method
  • Digital broadcasting system transmitter and method

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Embodiment Construction

[0030] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0031] figure 1 is a block diagram of a transmitting device of a digital broadcasting system according to an embodiment of the present invention.

[0032] refer to figure 1 , the transmission device of the digital broadcasting system according to this embodiment includes: first and second scramblers 10 and 11 , a forward error correction (FEC) unit 40 and a modulation unit 50 . The FEC unit 40 includes: first and second outer encoders 12 and 22 , first and second outer interleavers 14 and 24 , first and second inner encoders 16 and 26 , and inner interleaver 30 . The modulation unit 50 includes: a pilot / system information insertion block 51 , a mapping / OFDM modulation block 53 , a guard interval (GI) insertion block 55 , a digital-to-analog (D / A) conversion block 57 , and a radio frequency (RF) block 59 .

[0033] According to this em...

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Abstract

A transmission device of a digital broadcasting system having an inner interleaver with an improved structure is provided to perform a bit interleaving process by a convolution interleaving method, and to carry out a symbol interleaving process by using an optional random lookup table, thereby improving randomized properties of an inner interleaver. The first and second RS encoders(12,22) RS(Read-Solomon)-encode the first and second TSs(Transport Streams). The first and second outer interleavers(14,24) re-array data encoded in the first and second RS encoders(12,22), respectively. The first and second convolution encoders(16,26) convolution-encode the re-arrayed data, respectively. An inner interleaver(30) consists of a bit interleaver(31) and a symbol interleaver(33). The bit interleaver(31) re-arrays the encoded data in bit unit by the convolution encoders(16,26). The symbol interleaver(33) re-arrays the data in symbol unit by a predetermined interleaving address of a lookup table. A modulator portion(50) digitally modulates the re-arrayed data, and transmits the modulated data.

Description

technical field [0001] The present invention relates to a sending device and method of a digital broadcasting system, and more particularly, to a digital broadcasting system and method capable of improving the randomness of an inner interleaver. Background technique [0002] Compared with analog broadcasting, digital broadcasting uses a digital coding system, which has the advantages of system integration and interoperability. Thus, with the help of computers and networks, digital broadcasting meets the requirements of so-called media concentration centers. In addition, the interactive characteristics of digital broadcasting have also made great progress compared with one-way analog broadcasting. [0003] In order to ensure digital broadcasting integration and interoperability, first, standards need to be introduced. Currently, the recommended transmission methods for digital terrestrial television broadcasting include 8-VSB (Vestigial Sideband) in the United States and CO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/15H04H20/12H04J11/00H04N7/015H04N7/167H04N19/89H04N21/235
CPCH03M13/1515H04H20/12H04J11/00H04N7/015H04N7/0157H04N7/167H04N19/89H04N21/235
Inventor 金纪甫
Owner SAMSUNG ELECTRONICS CO LTD
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