Problem on communication

Discussion in 'Wireless & RF Design' started by vyshaq, Nov 9, 2012.

  1. vyshaq

    Thread Starter New Member

    Nov 8, 2012
    consider A complex valued ISI channel of duration of 7 taps.Assume that the constellation used is 64QAM, An engineer proposes to use Viterbi Equalizer at the receiver. what is your opinion?
  2. WBahn


    Mar 31, 2012
    By all means, please share your opinion and let us comment on it.
  3. tinamishra

    New Member

    Dec 1, 2012
    I didn't understand clearly what you want to say here but i have an information related to the same that is Internet telephony refers to communications services —voice, fax, SMS, and/or voice-messaging applications— that are transported via the Internet, rather than the public switched telephone network (PSTN). The steps involved in originating a VoIP telephone call are signaling and media channel setup, digitization of the analog voice signal, encoding, packetization, and transmission as Internet Protocol (IP) packets over a packet-switched network. On the receiving side, similar steps (usually in the reverse order) such as reception of the IP packets, decoding of the packets and digital-to-analog conversion reproduce the original voice stream.Even though IP telephony and VoIP are used interchangeably, IP telephony refers to all use of IP protocols for voice communication by digital telephony systems, while VoIP is one technology used by IP telephony to transport phone calls.