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Method for distributing filling bit in split code word

A technology of filling bits and bit sequences, which is applied in the field of channel error correction coding grouping, and can solve the problem of expanding the difference in frame error rate performance

Inactive Publication Date: 2009-05-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This results in a further exaggerated difference in frame error rate (FER) performance between coded blocks (CBs) of different lengths

Method used

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  • Method for distributing filling bit in split code word
  • Method for distributing filling bit in split code word
  • Method for distributing filling bit in split code word

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Embodiment Construction

[0038] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and unnecessary details and functions for the present invention will be omitted during the description to prevent confusion in the understanding of the present invention.

[0039] According to the present invention, when the length (TB) of the transport packet transmitted by the upper layer is greater than the coded packet (CB) length that channel coding can support, according to the segmentation method C=ceil(X / K max ) to determine the length and number of groups of coded groups required, where C represents the number of coded groups, and K max Represents the maximum coded packet length, X represents the length of the original transmission packet, and the function ceil() is a rounding function towards +∞.

[0040] After the length and the number of the required encoding packets are determined, the stuffing bits are evenly distributed to the encoding packe...

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Abstract

The present invention discloses a method for bit allocating and bit stuffing in encoding block and comprises the following procedures: segmenting original information bit sequence by length of encoding block that supported by channel coding to determine encoding block numbers that need segmented by; selecting two encoding block at least whose length discrete value nearby which supported by channel coding according to numbers of determined encoding block and length of encoding block that supported so as to have the least stuffing bit numbers that introduced by selected at least two encoding blocks; distributing required stuffing bit numbers to all encoding blocks which have smaller block length equally. As replacement, all stuffing bit can be distributed to each encoding block by proportional distribution to make bit rate of each corresponding encoding block approximately equal.

Description

technical field [0001] The present invention relates to a method for allocating padding bits in split codewords, in particular, in the field of wireless communication, the transmission block (transmission block) transmitted from the upper layer to the physical layer is divided into a plurality of channel error correction codes with different lengths. Grouping (CB) method. Background technique [0002] In a wireless communication system, the length of the data block from the upper layer is usually variable, and its value range is very large. However, in the standard of the wireless communication system, the packet length supported by each channel coding is limited, and each specific channel coding method is prescribed a series of code lengths corresponding to it. That is, the original bit sequence cannot be completely filled into each coded packet. [0003] In practical applications, channel encoders can only encode information sequences with a specific length. If the leng...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/08
CPCH03M13/6356H03M13/116H04L1/0067H03M13/1188
Inventor 江浩徐明栗谦一西尾昭彦
Owner PANASONIC CORP
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