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Digital modulation schemes

Discussion in 'Radio and Communications' started by gregoost, Jul 5, 2010.

  1. gregoost

    gregoost New Member

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    what are the advantages of higher level digital modulations schems (PSK, ASK, FSK) compared to the binary modulation schemes?????
     
  2. JimB

    JimB Super Moderator Most Helpful Member

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    Dont double post
     
  3. sucre

    sucre Banned

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    hi,i don't know,hope sb could give us a answer

    hi,i don't know,hope sb could give us a answer
     
  4. dave

    Dave New Member

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  5. jangal

    jangal New Member

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    in binary modulation for sending e.g. 1011 we need to send for pulse but when we use e.g. 4psk only send two pulse so we can get higher sending rate.
    2) in binary & ASK modulation the power of transmitter is variable and it is a disadvantage.
    3)binary & ASK are so sensitive to amplitude attenuation.
    ** 2-PSK & 2-ASK are a kind of binary schem.
    i think 4psk is the best schems for simple transmitions.
     
  6. gregoost

    gregoost New Member

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    Thanx very much guys...It helped a lot..
     
  7. synchronus

    synchronus New Member

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    what about MSK??
     
  8. jangal

    jangal New Member

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    MSK is also a very good modulating schem.

    if we use it instead of FSK it is so better . because FSK has sudden frequency chenges and it means more channel frequency. but in MSK the frequency chenges contnusly and its better.
     

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