process_vnode Subroutine
public subroutine process_vnode(buffer_v_to_e, llr_channel, llr_updated, Ne, m_c_to_v, m_v_to_c, B_buffer, F_buffer)
Variable node A Posteriori Probability (APP) processing function
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(TEdgeList), | intent(in) | :: | buffer_v_to_e |
List of edges connected to the variable node being currently processed |
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| real(kind=wp), | intent(in) | :: | llr_channel |
Log-Likelihood ratio (or Log-A Posteriori Probability Ratio) of the variable node being currently processed |
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| real(kind=wp), | intent(out) | :: | llr_updated |
Log-Likelihood ratio (or Log-A Posteriori Probability Ratio) of the variable node after processing |
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| integer, | intent(in) | :: | Ne |
Total number of edges in the LDPC code |
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| real(kind=wp), | intent(in) | :: | m_c_to_v(Ne) |
Array of messages from check-nodes |
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| real(kind=wp), | intent(out) | :: | m_v_to_c(Ne) |
Array of messages to check-nodes |
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| real(kind=wp), | intent(inout), | optional, | target | :: | B_buffer(2:buffer_v_to_e%N) |
pre-allocated backwords buffer for partial message processing results |
| real(kind=wp), | intent(inout), | optional, | target | :: | F_buffer(buffer_v_to_e%N-1) |
pre-allocated forward buffer for partial message processing results |