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DTSTART;TZID=America/New_York:20240416T140000
DTEND;TZID=America/New_York:20240416T150000
DTSTAMP:20260426T131721
CREATED:20240416T134623Z
LAST-MODIFIED:20240416T134623Z
UID:43398-1713276000-1713279600@coe.northeastern.edu
SUMMARY:LeetCode Mock Interviews - A CommLab Workshop
DESCRIPTION:Join the CommLab any Tuesday from 2-3 PM for our weekly LeetCode Mock Interview Workshop via Zoom. This workshop is tailored towards programming jobs and prior coding knowledge is expected. Boost your LeetCode problem-solving confidence for interviews by building your speaking skills while solving programming problems.
URL:https://coe.northeastern.edu/event/leetcode-mock-interviews-a-commlab-workshop/2024-04-16/
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240416T140000
DTEND;TZID=America/New_York:20240416T153000
DTSTAMP:20260426T131721
CREATED:20240410T205747Z
LAST-MODIFIED:20240410T205814Z
UID:43330-1713276000-1713281400@coe.northeastern.edu
SUMMARY:Nolan Pearce MS Thesis Defense
DESCRIPTION:Name:\nNolan Pearce \nTitle:\nDownlink Transmit Beamforming: Single-Carrier Acoustic Communication in a Noisy Environment \nDate:\n4/16/2024 \nTime:\n2:00:00 PM \nLocation:\nEXP-601A: \nCommittee Members:\n1. Prof. MIlica Stojanovic (Advisor)\n2. Prof. Stefano Basagni\n3. Prof. Josep Jornet\n4. Dr. Dimitrios Koutsonikolas \nAbstract:\nNoisy wireless acoustic channels produce intersymbol interference (ISI) from multipath propagation. This interference may be reduced by equalization techniques but require computationally intensive receiver algorithms. Typically\, beamforming methods are implemented at the uplink receiver to reduce complexity of equalization methods. However\, these methods require a receiver array. Using angle estimation of a transmitter\, beamforming techniques can be applied in downlink signal transmission to reduce equalizer complexity. This hypothesis is supported through simulation and applied to an open-air acoustic channel for significant performance improvement. Improving downlink signals through beamforming enables less complex user design suitable for single-carrier communications.
URL:https://coe.northeastern.edu/event/nolan-pearce-ms-thesis-defense/
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DTSTART;TZID=America/New_York:20240416T150000
DTEND;TZID=America/New_York:20240416T163000
DTSTAMP:20260426T131721
CREATED:20240410T205310Z
LAST-MODIFIED:20240410T210425Z
UID:43338-1713279600-1713285000@coe.northeastern.edu
SUMMARY:Zihan Wei MS Thesis Defense
DESCRIPTION:Name:\nZihan Wei \nTitle:\nSpatial Correlation Based Broadband Acoustic Beamforming \nDate:\n4/16/2024 \nTime:\n3:00:00 PM \nLocation:\nEXP-601A \nCommittee Members:\n1. Prof. Milica Stojanovic (Advisor)\n2. Prof. Stefano Basagni\n3. Prof. Josep Jornet \nAbstract:\nThis thesis presents a spatial correlation based broadband acoustic beamforming approach\, addressing significant challenges pertains to acoustic communication channels\, such as time-varying multipath propagation and volatile phase fluctuations due to surface reflections. The proposed beamforming approach utilizes the synchronization preamble\, a high-resolution pseudo-random sequence\, to estimate the spatial correlation matrices for each frequency bin and decompose these spatial correlation matrices using singular vector decomposition. The singular vectors are then applied to each carrier of the orthogonal frequency division multiplexing signals as beamforming weights. The proposed algorithm is demonstrated using simulations and an in-air acoustic communications testbed. Performance metrics such as the mean squared error and bit error rate are presented\, demonstrating excellent performance improvement over the angle-based beamforming approach.
URL:https://coe.northeastern.edu/event/zihan-wei-ms-thesis-defense/
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