CIAN students at Columbia University, from the WiMNet lab of Dr. Gil Zussman, including Raphael Norwitz, Savvas Petridis, Craig Gutterman, and Varun Gupta recently took home the 2nd place prize (out of about 100 demonstrations) for the New York City Media Lab Summit.
Developed in collaboration with Dr. Yigal Bejerano from Alcatel Lucent Bell Labs their demonstration presented the Adaptive Multicast Services (AMuSe) system. According to the WiMNet website,
In a joint project of the WiMNet Lab and Alcatel Lucent Bell Labs we have been developing the AMuSe (Adaptive Multicast Services) system. AMuSe combines methods for collecting accurate feedback information with low overhead and for network adaptation (e.g., transmission rate) based on this feedback. Specifically, the system includes a scheme for dynamic selection of a subset of the multicast receivers as feedback nodes, which periodically send information, such as channel quality or received packet statistics, to the multicast sender. Moreover, it includes schemes for dynamic rate adaptation based on the collected feedback.
This system was implemented in the ORBIT testbed to evaluate its performance in large groups with 150 to 200 receivers.
CIAN students Raphael Norwitz and Savvas Petridis are also recent recipients of the CIAN Undergraduate Research Fellowship. Learn more and apply.
Posted in Education, Industry & You, Research
Tagged Alcatel Lucent Bell Labs, AMuSe, Award, Bell Labs, Internet, Multicast Services, research, Wifi, WiMNet
CIAN student Franiece Bennett recently made the move from undergraduate student at Norfolk State University to graduate student at the University of California, Berkeley. Along with this change Franiece also applied for and was awarded the CIAN Diversity Fellowship. This award will assist her in completing her research and education goals. Below Franiece shares a bit more about herself and her research goals.
If you would like to learn more about applying for the Diversity Fellowship please contact CIAN Education.
Congratulations to Franiece Bennett
Recipient of the CIAN Diversity Fellowship
Franiece D. Bennett
MS/PhD First Year Student
Electrical Engineering and Computer Science Department
Constance Chang-Hasnain Optoelectronics Research Group
University of California, Berkeley
I am from Slidell, LA and I have a passion for creativity and love for art in any form or medium. My inclination to the sciences drew me to the field of engineering where I found creativity and practicality intertwined. As an undergraduate my junior year I was first introduced to CIAN based research when I worked with Dr. Demetris Geddis at Norfolk State University on a heterogeneously integrated long wavelength VCSEL-based transceiver circuit design for micro/nano scale device applications. Now as a first year graduate African-American female student, I wish to continue to promote the diversity of engineers and work towards realizing the functionality of future optoelectronic devices. By working in Dr. Chang-Hasnain’s research group at the University of California, Berkeley I am able conduct research related to silicon photonics and optical communications systems. As a CIAN Diversity Fellow I will be afforded the opportunity to conduct meaningful research that will benefit the center as well as further the influence of optoelectronic integration to conventional network systems.
My research project is one that will hybridize High Contrast Metastructure (HCM) applications with on-chip tunable Vertical Cavity Surface Emitting Lasers (VCSELs) to create an all-inclusive transmitter photonic integrated circuit. A micro-sized HCM is an ideal MUX due to its dimensions, which are smaller than the optical communication wavelength and an insertion loss of 0.5 dB. Tunable VCSELs are an appropriate optical output source due to their minimal thermal resistance at approximately 1.59 K/mW, low-cost fabrication processes, and continuous single mode tuning range at room temperature. From Finite-Difference Time-Domain simulation, multiplexing four on-chip channels into a single optical fiber will result in a coupling efficiency of up to 90% for 35nm 1dB bandwidth. To ensure proof-of-concept, the tunable VCSELs will have a characteristic continuous tuning range of at least ± 26 nm within the communication band. Also, the MUX can have no more than 21dB of loss, which is proportional to 90% coupling efficiency of multiple channels. The thermal resistance of the fabricated lasers will not exceed 1.6 K/mW.