Table 1 Number of operations required to achieve a low BER in the TPCs and the iVTCs
Code | Mod | Iterations | Operations | \(\%{\Delta }\) | ||
|---|---|---|---|---|---|---|
TPC | iVTC/R | TPC | iVTC | |||
(63,57) | BPSK | 3 | 6/0.77 | 8694 | 10,206 | − 17.3 |
QPSK | 7 | 9/0.77 | 20,286 | 15,309 | 24.5 | |
16QAM | 8 | 7/0.77 | 23,184 | 11,907 | 48.6 | |
64QAM | 2 | 4/0.77 | 5796 | 6804 | − 17.3 | |
(127,120) | BPSK | 5 | 17/0.90 | 29,210 | 55,233 | − 89.0 |
10/0.88 | 32,490 | − 11.2 | ||||
6/0.85 | 19,494 | 33.2 | ||||
QPSK | 10 | 11/0.90 | 58,420 | 35,739 | 38.8 | |
38/0.88 | 123,462 | − 111.3 | ||||
18/0.85 | 58,482 | − 0.1 | ||||
16QAM | 10 | 14/0.90 | 58,420 | 45,486 | 22.1 | |
13/0.88 | 42,237 | 27.7 | ||||
16/0.85 | 51,984 | 11.0 | ||||
64QAM | 7 | 9/0.90 | 40,894 | 29,241 | 28.4 | |
13/0.88 | 42,237 | 3.2 | ||||
14/0.85 | 45,486 | − 11.2 | ||||
(255,247) | BPSK | 11 | 10/0.93 | 129,030 | 68,850 | 46.6 |
QPSK | 15 | 15/0.93 | 175,950 | 103,275 | 41.3 | |
16QAM | 10 | 17/0.93 | 117,300 | 117,045 | 0.2 | |
64QAM | 8 | 11/0.93 | 93,840 | 75,735 | 19.2 | |