SIGNAL SEGMENTATION METHOD AND CRC ATTACHMENT METHOD FOR REDUCING UNDETECTED ERROR
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Abstract
The present invention provides for applying a cyclic redundancy check (CRC) to a data signal. The present invention includes attaching a first CRC to a first data signal block having a first length, segmenting the first data signal block attached with the first CRC into a plurality of second data signal blocks having a length shorter than the first length, respectively generating a second CRC for each second data signal block, and attaching the generated second CRC to the respective second data signal block. Moreover, the first CRC and second CRC may be generated from respectively different CRC generating polynomial equations.
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Citations
25 Claims
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1-15. -15. (canceled)
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16. A method for a transmitter to transmit signals to a receiver, the method comprising:
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attaching a first type CRC (Cyclic Redundancy Check) having a length ‘
L’
to a first type signal block having a length ‘
A’
to produce a sequence having a length ‘
B’
, wherein ‘
B=A+L’
;acquiring at least one second type signal block, wherein; if ‘
B’
is longer than a predetermined length ‘
Z’
, the at least one second type signal block is acquired by segmenting the sequence having the length ‘
B’
, and each of second type CRCs having the length ‘
L’
is attached to each of the at least one second type signal block, wherein the number, ‘
C’
, of the at least one second type signal block is determined as;
C=┌
B/(Z−
L)┐
, andif ‘
B’
is not longer than the predetermined length ‘
Z’
, the number of the at least one second type signal block is equals to 1, and no second type CRC is attached to the second type signal block;channel coding the at least one second type signal block; and transmitting the channel coded-second type signal block to the receiver, wherein the first type CRC and the second type CRC are generated by using different types of CRC generation polynomials. - View Dependent Claims (17, 18, 19, 20)
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21. A transmitter configured to transmit signals to a receiver, the transmitter comprising:
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a first type CRC (Cyclic Redundancy Check) attachment module configured to attach a first type CRC having a length ‘
L’
to a first type signal block having a length ‘
A’
to produce a sequence having a length ‘
B’
, wherein ‘
B=A+L’
;a segmentation module configured to acquire at least one second type signal block, wherein; if ‘
B’
is longer than a predetermined length ‘
Z’
, the at least one second type signal block is acquired by segmenting the sequence having the length ‘
B’
, and each of second type CRCs having the length ‘
L’
is attached to each of the at least one second type signal block, wherein the number, ‘
C’
, of the at least one second type signal block is determined as;
C=┌
B/(Z−
L)┐
, andif ‘
B’
is not longer than the predetermined length ‘
Z’
, the number of the at least one second type signal block is equals to 1, and no second type CRC is attached to the second type signal block;a channel coding module configured to perform channel coding the at least one second type signal block; and a transmission antenna used for transmitting the channel coded-second type signal block to the receiver, wherein the first type CRC and the second type CRC are generated by using different types of CRC generation polynomials. - View Dependent Claims (22, 23, 24, 25)
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Specification