| Q. |
As the value of M the bandwidth efficiency |
| A. | increases, same. |
| B. | increases, decreases |
| C. | increases, increases |
| D. | decreases, same |
| Answer» C. increases, increases | |
| Explanation: the first null bandwidth of m- ary psk signals decrease as m increases while rb is held constant. therefore, as the value of m increases, the bandwidth efficiency also increases. | |
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