Signal segmentation method and CRC attachment method for reducing undetected error

摘要

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.

主权项

1. A method for a transmitter to transmit signals to a receiver, the method comprising:
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 by segmenting the sequence having the length ‘B’; attaching each of second type CRCs having the length ‘L’ to each of the at least one second type signal block; channel coding the at least one second type signal block; and transmitting the at least one 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; segmenting the sequence having the length ‘B’ comprises determining a number ‘C’ of the at least one second type signal block to be acquired by the segmenting, considering the length ‘L’ of each of the second type CRCs to be attached to each of the at least one second type signal block; and one second type signal block is a unit for the channel coding.