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- The power efficiency of the M ary PSK de...

Q. |
## The power efficiency of the M ary PSK decreases because of the |

A. | freely packed constellation |

B. | increment of bandwidth efficiency |

C. | fixed null bandwidth |

D. | densely packed constellation |

Answer» D. densely packed constellation | |

Explanation: bandwidth efficiency increases as the value of m increases. but at the same time, increasing m implies that the constellation is more densely packed. hence the power efficiency or noise tolerance is decreased. |

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Communication Engineering

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