| Binary Input | 8 - QAM Output | |||
| Q | I | C | Ec | Theta c |
| 0 | 0 | 0 | 0.765 | - 135 |
| 0 | 0 | 1 | 1.848 | - 135 |
| 0 | 1 | 0 | 0.765 | - 45 |
| 0 | 1 | 1 | 1.848 | - 45 |
| 1 | 0 | 0 | 0.765 | + 135 |
| 1 | 0 | 1 | 1.848 | + 135 |
| 1 | 1 | 0 | 0.765 | + 45 |
| 1 | 1 | 1 | 1.848 | + 45 |
8 QAM TRANSMITTER
The only difference of this transmitter with the 8 PSK transmitter is the omission of the inverter for the signal going in to the 2 to 4 converter of the Q channel.
3.2 16-QAM
| I | I' | OUTPUT | Q | Q' | OUTPUT |
| 0 | 0 | - 0.22 | 0 | 0 | - 0.22 |
| 0 | 1 | - 0.82 | 0 | 1 | - 0.821 |
| 1 | 0 | + 0.22 | 1 | 0 | + 0.22 |
| 1 | 1 | + 0.821 | 1 | 1 | + 0.821 |
