Design, Implementation and Improvement of 16QAM System


  • Mohammed Elmahdi
  • Algaddafi Alpotte
  • Otman Imrayed
  • El-Sharif A. Omer


16QAM System, Hamming code (15,11,1), Rayleigh fading, Interleaver


In this paper, we will establish a communication model that simulates AWGN and Rayleigh Fading channel using QAM scheme. The first part includes the generation of 16QAM and makes a comparison between the theoretical and simulation results. The second part includes the coding of the QAM signal using the Hamming (15,11,1) system with AWGN and makes a comparison between the theoretical and simulation results. In the third part, we pass the uncoded QAM signal through a fading channel. The fourth part considers the coded 16QAM system with AWGN and Rayleigh fading. Finally, we design an interleaver for the system in order to improve the coding performance.


Bernard Sklar, Digital Communications: Fundamentals and Applications, 2nd Ed., Prentice Hall, 2001.

Bruce A. Black et al, Introduction to Wireless Systems, Prentice Hall, 2008.

S. Haykin, Communication Systems, 4th Ed, John Wiley and Sons, 2001

D.M. Motiur Rahaman, “Performance Analysis of Essential Modulation Techniques”, Universal Journal of Communications and Network 1(2): 39-43,2013

M. Trikha, M. Singhal, R. Rajan, N. Sharma and P. Bhardwaj, “BER Performance comparison between QPSK and 4 QA Schemes,” MIT International Journal of Electrical and Instrumentation Engineering, vol. 3, No. 2, pp. 62–66, August 2013.

Islam, Kazi Mohitul, Habib Mohammad Nazir Ahmad, Chowdhury Akram Hossain, and A. K. M. Arifuzzman, "Performance Comparison between Traditional and Gray-mapped 16-QAM Scheme with OFDM in both AWGN and Rayleigh Fading Channel," International Journal (2011).

A K M Arifuzzman, Kazi Mohitul Islam, Chowdhury Akram Hossain, Shaikhul Arefin Khan, Abdul Hasib Siddique, Habib Muhammad Nazir Ahmad, “Performance Comparison Between Traditional and Gray-mapped 16-QAM Scheme in Both AWGN and Rayleigh Fading Channel”, Stamford Journal of Electrical, Electronic and Communication Technology, vol. 1, pp. 75-80, June 2010.