Table 1 Computational complexity of q-ary LDPC-coded PRCPM using various extrinsic information exchange methods
Per symbol per iteration | Additions | Multiplications | Log &exp operations |
|---|---|---|---|
Direct method | 0 | 0 | 0 |
Weighted method | 0 | 6M | 2M |
Average method | 2M | 2M | 6M |
Combined method | 2M | 8M | 8M |
CPM-SISO | 3p M L−1(3M+1) | 3p M L−1 | 3p M L−1(M+1) |
LDPC-SISO | 0 | (2qlog2q+4q)w c n inner | 0 |