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King Fahd University of Petroleum & Minerals

Electrical Engineering Department

Associate Professor

Dr. Saad Al-Ahmadi

 

My Research Work

 

My research interest is in the field of wireless communications. Past and current work is on the statistical characterization of mobile radio channels and the analysis of different communication schemes over such channels. Current tracks of research are:

 

 ▪ Statistical modeling of fading channels

 ▪ Design and performance analysis of MIMO systems including coordinated multi-point transmission (CoMP) schemes

 ▪ Multi-user relay and cooperative Networks

▪ Cognitive Radio Networks

▪ Visible Light Communications and VLC\RF Systems

  

 

Publications

 Journal Papers:  

 

Saad Al-Ahmadi and Asrar U. H. Sheikh, “The effect of Spatial Correlation on the Performance of 2-D Rake receivers in Bad Urban Nakagami Channels,” Arabian Journal of Science and Engineering (AJSE), vol. 28, no. 2C, pp. 19-34, Saudi Arabia, December 2003.

 

  Saad Al-Ahmadi and Halim Yanikomeroglu, “ On the approximation of the generalized-Κ distribution by a gamma distribution for modeling composite fading channels,” IEEE Transactions on Wireless Communications., vol. 9, no.2, pp.706-713, Feb. 2010.  

 

Saad Al-Ahmadi and Halim Yanikomeroglu, “On the beamforming optimality range in TIMO channels with common and individual power constraints,”  IEEE Transactions on Communications, vol. 59, no. 3,  pp.. 648 - 651, Mar. 2011.648 - 651, Mar. 2011.
 

 I. Ansari, Saad Al-Ahmadi, F. Yilmaz, M. S. Alouini, and H. Yanikomeroglu, " New Formula for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Composite Fading Channels," IEEE Transactions on Communications, vol. 599, no. 10, pp. 2654-2658, Oct.  2011.

 

T. Ahmed, R. Johary, H. Yanikomeroglu, Saad Al-Ahmadi, and G.. Boudreau,  "Coordinated  Port Selection and Beam Steering Optimization in a Multi-Cell Distributed Antenna System using Semidefinite Relaxation""  IEEE Transactions on Wireless Communications.. vol. 11, no. 5, pp.vol. 11, no. 5, pp. 1861-1871, May 2012.

 

Saad Al-Ahmadi, "The Asymptotic Capacity of Opportunistic Scheduling over Gamma-Gamma (Generalised-K) Composite Fading Channels," IET Communications, vol. 6, no. 18, pp. 3231-3237, Dec. 2012.

 

Saad Al-Ahmadi, "The gamma-gamma signal fading model: A survey" IEEEE Antennas and Propagation Magazine,  vol. 6, no. 5, pp. 245-259, Oct. 2014.

 

Majid Khoshafa and Saad Al-Ahmadi, " On the Capacity of Underlay Multihop Cognitive Relaying Over Generalized-K Composite Fading Channels," to appear in Wireless Personal Communications. 2017.

 

Majid Khoshafa and Saad Al-Ahmadi, "On the capacity of cognitive radio networks over shadowed multipath fading channels," to appear

 

Saad Al-Ahmadi, Omar Maraqa, Murat Uysal, and Sadiq M. Sait, " Multi-User Visible Light Communications: State-of-the-Art and Future Directions," Accepted to IEEE Access, November 2018.  

https://www.technologyreview.com/s/612115/the-best-of-the-physics-arxiv-week-ending-september-15-2018/

 

 

Conference Papers:

  • Saad Al-Ahmadi and A.U. H. Sheikh, “Spatial domain modeling of microcellular systems operating in multipath channels with Nakagami statistics,” Proceeding 13th IEEE-PIMRC, pp. 1942-1946, Lisbon, Portugal, September 2002.

 

  • Saad Al-Ahmadi and Halim Yanikomeroglu, “On the approximation of the generalized-K PDF by a Gamma PDF Using the moment matching method,” IEEE Wireless Communications and Networking Conference, 2009. WCNC 2009., vol., no., pp.1-6, 5-8 April 2009.

 

  • Saad Al-Ahmadi and Halim Yanikomeroglu, On the use of high-order moment matching to approximate the generalized-k distribution by a Gamma distribution,” IEEE Global Telecommunications Conference 2009, GLOBECOM 2009., vol., no., pp.1-6, Nov. 30 2009-December 4 2009.

 

  • Saad Al-Ahmadi and Halim Yanikomeroglu, “On the approximation of the PDF of the sum of independent Generalized-K RVs by another generalized-K PDF with applications to distributed antenna systems,”IEEE Wireless Communications and Networking Conference (WCNC), 2010 , vol., no., pp.1-6, 18-21 April 2010.

 

  • Saad Al-Ahmadi and Halim Yanikomeroglu, “On the statistics of the sum of correlated generalized-K RVs,” IEEE International Conference on Communications (ICC), 2010, vol., no., pp.1-5, 23-27 May 2010.

 

  •  Saad Al-Ahmadi and Halim Yanikomeroglu, “The ergodic and outage capacities of distributed antenna systems in generalized-K fading channels,” presented in IEEE PIMRC 2010.  Istanbul. Turkey.

 

  •  Talha Ahmed, Saad Al-Ahmadi, Halim Yanikomeroglu, and Gary Boudreau, "Downlink Linear Transmission Schemes in a Single-Cell Distributed Antenna System with Port Selection," presented in VTC'11, Budapest. Hungary.

     

  •   Imran Ansari, Saad Al-Ahmadi, Slim Alouini, and Halim Yanikomeroglu,  An Exact Closed-Form Expression for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Fading," presented in VTC'11, Budapest. Hungary.

 

  • T. Ahmed, R. Johary, H. Yanikomeroglu, Saad Al-Ahmadi, and G. Boudreau, " Coordinated Max-Min Fair Port Selection in a Multi-Cell Distributed Antenna System using Semidefinite Relaxation"  ICC 2012. Ottawa. Canada.

 
  •  Saad Al-Ahmadi, " The Asymptotic Capacity of Opportunistic Scheduling over Shadowed Nakagami Fading (generalized-K) Channels,"  IWCMC 2012. Limassol. Cyprus.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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