Hence, to compute the v-to-c messages for the next layer, the
outputs of Path Constructor-I need to be added to the inputs of
the sorters to generate the a posteriori messages .
To enable this computation, the inputs to the sorters are also
stored into RAM A1 while they are buffered by RAM B1. After
the outputs of Path Constructor-I are buffered by RAM B2, the
a posteriori messages are computed by the adder in the top right
corner of Fig. 5. Division and reverse permutation should be applied
to the a posteriori messages to reverse the effects of multiplication
and permutation, respectively. However, the a posteriori
messages can be used to compute the v-to-c messages of the
same block column of for the next layer right after. Hence,
the division for a column in layer can be combined with the
multiplication for the same column in layer as a single
constant multiplication, since the entries of are known. Similarly,
the reverse permutation for layer can be incorporated
with the permutation of the same block column for layer .
Hence, there is no division and reverse permutation blocks in
our decoder.
in
Hence, to compute the v-to-c messages for the next layer, the
outputs of Path Constructor-I need to be added to the inputs of
the sorters to generate the a posteriori messages .
To enable this computation, the inputs to the sorters are also
stored into RAM A1 while they are buffered by RAM B1. After
the outputs of Path Constructor-I are buffered by RAM B2, the
a posteriori messages are computed by the adder in the top right
corner of Fig. 5. Division and reverse permutation should be applied
to the a posteriori messages to reverse the effects of multiplication
and permutation, respectively. However, the a posteriori
messages can be used to compute the v-to-c messages of the
same block column of for the next layer right after. Hence,
the division for a column in layer can be combined with the
multiplication for the same column in layer as a single
constant multiplication, since the entries of are known. Similarly,
the reverse permutation for layer can be incorporated
with the permutation of the same block column for layer .
Hence, there is no division and reverse permutation blocks in
our decoder.
in
การแปล กรุณารอสักครู่..