Imran Ansari







BS.c. KFUPM, 2009
MS. c. KAUST, 2010
PhD Student at KAUST since 2010
Advisor: Prof. Mohamed-Slim Alouini

Why did you choose KAUST? 

 
KAUST provides resources similar to the world’s best universities in terms of faculty, research facilities, and a competitive research environment. This environment leads to the advancement and gaining of top-level knowledge.

How is KAUST helping you fulfill your dream? 

KAUST has been amazing in achieving my objectives in terms of research for my PhD. I have been blessed with an amazing supervisor who guides, teaches, and shares knowledge beyond what is required. Additionally, the lab equipment at KAUST is very powerful for computational areas, and so are other research resources.

What is your research topic?

Wireless communication has been reaching a stage where the spectrum is getting scarce and it is getting more difficult to accommodate more devices and users. It makes sense that the resources allowing successful communication are fixed, whereas user devices have been increasing exponentially. The question is: How will the fixed or limited resources serve an unlimited number of users? This is the biggest problem this decade in the field of wireless communications. 

However, some solutions are possible. Experts in the field are now beginning to talk about 5G. Another possibility is to break cellular regions into smaller cell regions; and this would allow for a greater spectrum at lower scale, and these much smaller cells could be more easily managed. Furthermore, utilization of laser beams for wireless communications is also possible. Since laser beams have very high frequency, they will not only provide for more spectrum resources for wireless communications, but also provide more capacity/bandwidth due to their high frequency range. My research topic is related to this, and involves work on so-called “Free-Space Optics” (FSO).

What are your research accomplishments so far?

I have authored eleven publications as a first author. Some of these selected/recent publications are as follows:

Journals:
1. I. S. Ansari, F. Yilmaz, and M.-S. Alouini. “Impact of pointing errors on the performance of mixed RF/FSO dual-hop transmission systems," IEEE Wireless Communications Letters, vol. PP, no. 99, pp. 1-4, 2013.
2. I. S. Ansari, S. Al-Ahmadi, F. Yilmaz, M.-S. Alouini, and H. Yanikomeroglu. “A New Formula for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Composite Fading Channels,” IEEE Transactions on Communications, vol. 59, no. 10, pp. 2654 – 2658, Oct. 2011.
Conferences:
1. I. S. Ansari, F. Yilmaz, and M.-S. Alouini. “On the Performance of Mixed RF/FSO Variable Gain Dual-Hop Transmission Systems with Pointing Errors,” to appear in Proceedings of IEEE 78thVehicular Technology Conference (VTC fall 2013), Las Vegas, USA, September 2013.
2. I. S. Ansari, F. Yilmaz, and M.-S. Alouini. “On the Performance of Mixed RF/FSO Dual-Hop Transmission Systems,” to appear in Proceedings of IEEE 77thVehicular Technology Conference (VTC spring 2013), Dresden, Germany, June 2013.
3. I. S. Ansari, F. Yilmaz, and M.-S. Alouini. “On the Sum of Squared eta-mu Random Variates with Application to the Performance of Wireless Communication Systems,” to appear in Proceedings of IEEE 77thVehicular Technology Conference (VTC spring 2013), Dresden, Germany, June 2013.
4. I. S. Ansari, F. Yilmaz, and M.-S. Alouini. “On the Sum of Gamma Random Variates With Application to the Performance of Maximal Ratio Combining over Nakagami-m Fading Channels,” in Proceedings of IEEE 13th Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2012), Cesme, Turkey, June 17-20, 2012, pp. 394-398.
5. I. S. Ansari, S. Al-Ahmadi, F. Yilmaz, M.-S. Alouini, and H. Yanikomeroglu. “An Exact Closed-Form Expression for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Fading,” in Proceedings of IEEE 73rd Vehicular Technology Conference (VTC spring 2011), Budapest, Hungary, May 15-19, 2011.

What do you think about the KAUST environment and social life? 

KAUST has a very diverse environment and a very multi-cultural social life. The Saudis have an excellent reputation for hospitality, and being part of the KAUST family makes this hospitality even better. KAUST’s panoramic view speaks for itself in terms of its rare beauty. There are many recreational facilities provided at KAUST, and if you like sports, you can name almost any sport and you will find it here! KAUST seems to be situated at the center of the globe, making every place on the map easily accessible. Most importantly, the work style is quite dynamic here, and as a student, one works according to the rhythm of his or her supervisor.