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Dynamic time interleaving method and device therefor

A technology of time interleaving and block interleaving, applied in the field of telecommunications, can solve problems such as limited insertion ratio, slowness, long-term fading of multipath channels, etc.

Inactive Publication Date: 2009-11-04
FRANCE TELECOM SA
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Static interleaving has the advantage for estimating the transmission medium, since it limits the insertion ratio of training sequences intended to probe the transmission medium, provided that the transmission medium varies slowly in time compared to the transmission bit rate.
Conversely, interleaving data when it is sent to decorrelate it when it is received is of limited effectiveness because of the long-term fading due to the slow variation in time of the multipath channel

Method used

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  • Dynamic time interleaving method and device therefor
  • Dynamic time interleaving method and device therefor
  • Dynamic time interleaving method and device therefor

Examples

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Embodiment Construction

[0039] The same reference numerals or signs are used in each figure to indicate the same things.

[0040] image 3 It is a diagram of an example of the transmission system SY using the interleaving method 1 of the present invention. The transmission system SY includes a single carrier transmitter EM and a receiver RE. The transmitter EM includes a source data generation module SE, a channel coding module CC, a bit interleaving module ETB, a symbol binary coding module CBS, a data symbol time interleaver ETS, a framing device MT, and a transmission filter FL.

[0041] The symbol time interleaver ETS includes a given transmission mode for the transmitter EM, according to the time index n To calculate the interleaving rule I that can change over time n (k) equipment. The framing device MT distributes the set of interleaved data symbols and symbols dedicated to channel estimation and synchronization. At the output of the filter FL, the transmitted signal Se is transmitted on the prop...

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PUM

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Abstract

The invention relates to a time-interleaving method (1) and a time interleaver (ETS) for data. The data is intended to be sequentially transmitted by a baseband carrier of a single-carrier transmission device (EM). The method comprises interleaving a subsequent data block according to an interleaving law that is variable over time for a given transmission mode of the transmission device.

Description

Technical field [0001] The invention relates to the field of telecommunications. Within this field, the present invention relates more specifically to digital communications. Digital communication includes, for example, wireless communication and cable communication. The communication transmission medium is collectively referred to as the transmission or propagation channel, which originally referred to the aerial channel and expanded to refer to any channel. Background technique [0002] The present invention is concerned with interleaving technology. These techniques are generally used to reduce the correlation introduced by the inherent "selective" filtering of the transmission channel. [0003] The present invention is applied to any single-carrier transmission system as opposed to multi-carrier signals, that is, any system in which baseband data symbols are transmitted sequentially in time, in which multi-carrier signals are simultaneously transmitted through orthogonal freq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/27H04L1/00
CPCH03M13/2764H03M13/2789H03M13/2792H03M13/27H04L1/00
Inventor 伊莎贝尔·赛奥德安妮-玛丽·厄尔默-莫尔
Owner FRANCE TELECOM SA
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