Zainab  Faydhe Al-Azzawi, Fatima  Faydhe AL-Azzawi, Sada  Faydhe Al-Azzawi, 
    M-PSK System Performance in Multi-Channel Environments with
MATLAB Simulink Models,
    Journal of Engineering and Applied Sciences,
    Volume 14,Issue 20,
    2019,
    Pages 7509-7516,
    ISSN 1816-949x,
    jeasci.2019.7509.7516,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2019.7509.7516)
    Abstract: PSK modulation approach is one of the most digital modulation methods used in communication
systems recording to low transmitted power for a given probability of error than other digital modulation
techniques. In this study PSK Model design and implemented using MATLAB Simulink and tested under
multi-channel environment with BER improvement in each channel type, M-PSK Model examined under
adjacent and co-channel interference by using two interfering signal. The model enables the modifying of the
frequency offset and the power gain of each interferer and view the effects ona spectrum plot.
    Keywords: M-PSK;co-channel interference;adjacent interference;digital modulation;BER improvement;interfering signal