摘要:
Disclosed are an encoder, a transmission device, and an encoding method with which the transmission amount is reduced and a deterioration in transmission efficiency is suppressed while improving reception quality when QC-LDPC or a like block encoding is used. A puncture pattern setting unit (620) searches for a puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of a sub block matrix that forms a check matrix (H) of a QC-LDPC code, and a puncture unit (data reduction unit) (630) switches the puncture pattern for each integral multiple of the number of columns or for each divisor of the number of columns of the sub block matrix that forms the check matrix of the QC-LDPC code.
摘要:
An erasure correction encoding apparatus 710 providing high erasure correction capability, not depending on the size of packets is disclosed. Packet dividing section 716 receives packet 43, setting signal 42 and control signal 44 as input, and decides whether or not to perform packet division based on the packet size. If the packet size designated by setting signal 42 is not the minimum packet size among packet sizes supported by the communication system, packet dividing section 716 decides to perform packet division. Then, in this case, packet dividing section 716 divides packet 43 and outputs divided packets as packet 46. By contrast, if the packet size designated by setting signal 42 is the minimum packet size among packet sizes supported by the communication system, packet dividing section 716 decides not to perform packet division. Then, in this case, packet dividing section 716 outputs packet 43 as is as packet 46.