RADIATE: RADio-over-fIber as AnTenna Extender

Nirwan Ansari (Inventor), Tao Han (Inventor)

Research output: InnovationPatent


NJIT Docket # 14-017

RADIATE: RADio-over-fiber as AnTenna Extender


Inventors: Nirwan Ansari, Tao Han


Intellectual Property & Development status: US Patent Protection is pending. Patent Publication No. US-2016-0174241-A1

NJIT is currently seeking commercial partners for the further development and commercialization of this opportunity.


Technology Brief: Researchers at New Jersey Institute of Technology in the Department of Electrical and Computer Engineering have invented a cost effective and high quality communications solution for provisioning broadband Internet services in high-speed trains.


Providing broadband Internet services in high-speed trains is important for passengers. The current solutions to enable high-quality broadband Internet services in high-speed trains either have high capital expenditure for deploying network infrastructure or do not have high quality communication. Current solutions utilizes the cellular network as backhauls to avoid the expensive capital expenditure involved in providing broadband Internet services in high speed trains. However, the drawbacks of using cellular network are rapid channel variations and overly frequent handovers. The novel broadband communication solution for high speed trains named RADIATE (RADio-over-fIber as AnTenna Extender) overcomes rapid channel variations and overly frequent handovers, the major  drawback of using cellular network, by deploying ‘moving cell’ concept utilizing the fiber links to form an antenna system on the roof of the train, which virtually extends the antenna of individual users.

The published patent can be found at https://patents.google.com/patent/US20160174241A1



•       High Speed Trains



•       Cost Effective

•       High - Quality Communication

Inventors Bio:

Nirwan Ansari is Distinguished Professor of Electrical and Computer Engineering at the New Jersey Institute of Technology (NJIT). He has also been a visiting (chair) professor at several universities. He received a Ph.D. from Purdue University in 1988, an MSEE from the University of Michigan in 1983, and a BSEE (summa cum laude with a perfect GPA) from NJIT in 1982. He recently authored Green Mobile Networks: A Networking Perspective (IEEE-Wiley, 2017) with T. Han, and co-authored two other books. He has also (co-)authored more than 500 technical publications, over 200 published in widely cited journals/ magazines. He has guest-edited a number of special issues covering various emerging topics in communications and networking. He has served on the editorial/advisory board of over ten journals. His current research focuses on green communications and networking, cloud computing, and various aspects of broadband networks. Professor Ansari was elected to serve in the IEEE Communications Society (ComSoc) Board of Governors as a member-at-large, has chaired ComSoc technical committees, and has been actively organizing numerous IEEE International Conferences/Symposia/Workshops. He currently serves in the IEEE Fellow Committee and is chairing the HPSR Steering Committee. He has frequently been delivering keynote addresses, distinguished lectures, tutorials, and invited talks. Some of his recognitions include IEEE Fellow, several Excellence in Teaching Awards, a few best paper awards, the IEEE GCCTC Distinguished Technical Achievement Recognition Award, the ComSoc AHSN TC Technical Recognition Award, Purdue University Outstanding Electrical and Computer Engineer Award, the NCE Excellence in Research Award, the NJ Inventors Hall of Fame Inventor of the Year Award, the Thomas Alva Edison Patent Award, and designation as a COMSOC Distinguished Lecturer. He has also been granted 36 U.S. patents.



Original languageEnglish (US)
StatePublished - Jan 2018


  • Patent Issued


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