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Data de-interleaving method and device

A de-interleaving and data technology, applied in the field of communication, can solve the problems of unbalanced de-interleaving complexity and reduce data throughput, so as to achieve the effect of balancing complexity and improving throughput.

Active Publication Date: 2011-07-27
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

In this way, the throughput rate of data during deinterleaving will be reduced; and the address calculation before writing the code stream to RAM will also lead to the unbalanced complexity of deinterleaving

Method used

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  • Data de-interleaving method and device

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Embodiment Construction

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0027] The embodiment of the present invention provides a data deinterleaving method and device, which can improve the data throughput rate during deinterleaving and balance the complexity of deinterleaving. Among them, the data de-interleaving method and device provided in the embodiments of the present invention can perform de-interleaving processing on the information stream, the first check stream, and the second check stream of the P...

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Abstract

The invention discloses a data de-interleaving method and a data de-interleaving device. The data de-interleaving method comprises the following steps: a receiving end writes the received interleaved input code stream into at least two different caches in rows, the volumes of data stored in the caches are the same, and adjacent column data corresponding to the input code stream before interleaving is positioned in memory units corresponding to different caches; the input code stream comprises an information flow, a first check flow and a second check flow; the adjacent column data is read from the memory units corresponding to different caches and rearranged to obtain the code stream corresponding to the input code stream before interleaving; the code stream corresponding to the input code stream before interleaving includes code streams respectively corresponding to the information flow and the first check flow before interleaving, and the code stream subjected to one-bit ring left shift corresponding to the second check flow before interleaving; and the code stream corresponding to the second check flow before interleaving shift to the right for one bit cyclically. The data de-interleaving method and the data de-interleaving device can improve the throughput rate of data in de-interleaving, and balance the complexity of de-interleaving.

Description

Technical field [0001] The present invention mainly relates to the field of communication technology, in particular to a data de-interleaving method and device. Background technique [0002] In the Long Term Evolution (LTE) protocol, the Physical Uplink Share Channel (PUSCH) is used as a Turbo coding link with a 1 / 3 code rate. After Turbo encoding, 3 code streams can be generated on the PUSCH channel, namely the information stream, the first check stream, and the second check stream. [0003] In order to avoid a series of data errors caused by sudden noise interference during transmission on the PUSCH channel, it is usually necessary to interleave the three streams at the transmitting end (such as the user terminal) as follows: that is, the input code stream is 1 line according to 32 bits. Write the interleaving matrix (if the length of the code stream is not an integer multiple of 32 bits, add interleaving dummy elements at the front end of the code stream, so that each row in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L12/56H03M13/27
CPCH03M13/2703
Inventor 周扬
Owner HUAWEI TECH CO LTD
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