Now we can express the symbol error probability for M-PAM by the formula PM(Im) = M a1 M erfc (a 3k M2 a 1 Eb N0 ) (3.102) If we ... Figure 3.11 presents several error curves drawn according to (3.102) for different modulation levels M. ... As we know, in a classical fixed telephone network each user is connected to the closest switching center via a twisted copper wire pair. ... In the so-called Plain Old Telephone Service (POTS) a twisted pair is applied only to transmit analog signalsanbsp;...

Title | : | Introduction to Digital Communication Systems |

Author | : | Krzysztof Wesolowski |

Publisher | : | John Wiley & Sons - 2009-07-31 |

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