American Journal of Networks and Communications

Volume 5, Issue 5, October 2016

  • Comparative Study of Bit Error Rate of Different M-ary Modulation Techniques in AWGN Channel

    Bourdillon O. Omijeh, Ifiokabasi Eyo

    Issue: Volume 5, Issue 5, October 2016
    Pages: 82-90
    Received: 22 August 2016
    Accepted: 31 August 2016
    Published: 24 September 2016
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    Abstract: This paper focuses on various digital modulation schemes and their effect on bit error rate (BER); and to ascertain which has the lowest bit error rate. Further analysis includes: to compare bit error rates of various digital modulation schemes using the M-ary modulation technique, analyse the effect of varying signal energy per bit to Noise ratio ... Show More
  • Improving the BER Performance of M-FSK in a Noisy Multipath Rayleigh, and Rician Fading Channels Using Reed-Solomon Forward Error Correction Method

    Bourdillon O. Omijeh, Ekene Obodoekwe

    Issue: Volume 5, Issue 5, October 2016
    Pages: 91-96
    Received: 22 August 2016
    Accepted: 31 August 2016
    Published: 24 September 2016
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    Abstract: This paper focuses on the application of Reed-Solomon Error Correction Code evaluation technique on the Bit-Error-Rate performance of M-ary Frequency Shift Keying (M-FSK) in noisy multipath Rayleigh and Rician fading channel. The detection and correction of the received information errors from the multipath fading channel was done using the Forward... Show More
  • The Study and Simulation of Adaptive Algorithms in Echo Cancellation of an Acoustic Signal

    Mahnaz Namdaran, Masoud Masomei, Hamid Chegini

    Issue: Volume 5, Issue 5, October 2016
    Pages: 97-106
    Received: 5 September 2016
    Accepted: 19 September 2016
    Published: 11 October 2016
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    Abstract: Echo signal is the delayed form of an electrical or acoustic signal and it occurs when it returns to its source, in other words when acoustic signal finds its way from sending route through receiving one. One of the important parameters in discussing echo is delay time. In practical applications, if round trip time exceeds 30 milliseconds and echo ... Show More
  • An Improved Data Hiding in Encrypted Images

    Aida Laee, Masoud Masomei, Hamid Chegini

    Issue: Volume 5, Issue 5, October 2016
    Pages: 107-114
    Received: 8 September 2016
    Accepted: 21 September 2016
    Published: 11 October 2016
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    Abstract: Nowadays in digital world, safeguarding information is an important phase in transmitting messages and doing trades. The increasing growth of computer networks has caused a lot of changes in life style, occupational activities and organizations. Thus, data security has been one of the essential issues in this area. By connecting a local network to ... Show More
  • An Improved Routing Method for Electric Power Communication Networks

    Fan Bing, Wang Yujie

    Issue: Volume 5, Issue 5, October 2016
    Pages: 115-120
    Received: 18 October 2016
    Published: 19 October 2016
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    Abstract: An improved routing method to reduce the risk of electric power communication networks (EPCN), called low risk routing method (LRRM), is proposed based on the fact that different types of traffic with different service importance levels in EPCN. In order to calculate the vulnerability of EPCN under artificial attacks, deliberate attack and betweenn... Show More