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Method and device for interleaving or deinterleaving

A technology of de-interleaving and de-interleaver, which is applied in the direction of using interleaving technology for error correction/detection, forward error control, encoding, etc., and can solve problems such as memory cost and space

Inactive Publication Date: 2012-10-10
KONINK PHILIPS ELECTRONICS NV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the main disadvantage of using SRAM for tables is that this type of memory costs space and, for the required amount of memory is 248 x 304 bytes, results in a rather large area in the encoder / decoder IC being allocated only for The table

Method used

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  • Method and device for interleaving or deinterleaving
  • Method and device for interleaving or deinterleaving
  • Method and device for interleaving or deinterleaving

Examples

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Embodiment Construction

[0033] figure 1 A digital communication system is shown, including a transmitter 11, a receiver 12, and a channel. Data 10 in the form of a symbol sequence is sent from the transmitter 11 to the receiver 12 through the channel. The channel can be represented as an information carrier 13 as shown in the figure, because this can be understood from the principle of communication. The transmitter 11 or video recorder includes an encoder 14 which encodes the data 10 in a form to make the data less sensitive to noise, and also includes a modulator 15 for generating an analog signal 18 based on the encoded data. The analog signal 18 passes through the figure Appropriate recording means not shown are recorded on the information carrier 13. The receiver 12 or the reader includes a demodulator 15' for demodulating the regenerated analog signal 18' (regenerated from the information carrier 13 by a suitable reading device not shown in the figure) in order to reconstruct the encoded The da...

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Abstract

Interleaving improves noise rejection in digital communication and storage systems. According a known scheme, the interleaving / deinterleaving is achieved by storing symbols in a temporary memory table of R rows x C columns in a row by row order, and reading them in a column by column order, or vice versa, so obtaining a rearranged order. Methods and devices for interleaving and deinterleaving areproposed which accomplish the same interleaving / deinterleaving operation with a reduced size of the temporary memory table. The rearrangement of the symbols according to the rearranged order is accomplished by using a table with a reduced memory size, in combination with the order with which the symbols are fetched from or stored in a further memory. The invention further relates to ICs and apparatuses for interleaving and / or deinterleaving.

Description

Technical field [0001] The present invention relates to a de-interleaving method, and to a corresponding interleaving method. [0002] The invention also relates to a deinterleaver and a corresponding interleaver. Background technique [0003] Interleaving is used in some digital communication systems to improve the reliability of communication. Several schemes of interleaving and de-interleaving are known. De-interleaving is the reverse operation of interleaving: for example, so-called block interleaving. According to the interleaving scheme, the symbol sequence to be transmitted is divided into blocks, and each block belongs to the block. The symbols of are shuffled in the block before sending. For example, according to a specific block interleaving scheme, a table with R rows and C columns is used. Each element or unit in the table can contain a symbol: the symbols of each block (an R×C symbol block) are passed in accordance with the The order of the rows is stored in the tab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/27
CPCH03M13/2707H04L1/0071H03M13/2782H03M13/27
Inventor B·范登博施
Owner KONINK PHILIPS ELECTRONICS NV
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