Bo Ryu

In this inaugural post-COVID in-person event organized by the Oregon IEEE ComSoc, Kumar Vijay Mishra explored cutting-edge scenarios in collaborative and distributed ISAC, focusing on mm-wave and THz frequencies, dynamic vehicular environments, and innovative architectures. Learn about sensor fusion, distributed radar and communications, intelligent reflecting surfaces (IRS), and ISAC secrecy rate optimization. Dr. Kumar Vijay Mishra, an award-winning researcher and IEEE Distinguished Lecturer, will share his expertise in radar systems, signal processing, and electromagnetics. #mmWave #THzFrequencies #isac #signalprocessing

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A study in perspectives on AV safety: a Waymo robotaxi approaches an intersection in San Francisco. Some other driver is doing "really fast donuts" in the intersection, and has been doing so long enough that the robotaxi rider looks up because of the smell of burning rubber entering the cabin. Robotaxi enters the intersection, then stops. The other driver halts and narrowly misses hitting the robotaxi (by perhaps a foot). The rider: "I can trust the Waymo, but I can't trust this driver". States that the other driver was upset but the robotaxi rider "shrugged, and pointed to the invisible driver." What ya' gonna do? It's a Waymo. "Still going to use Waymo." Presumed Waymo response to regulators and media: The human driver doing donuts was irresponsible. If there had been a crash it would have been the other driver's fault. (If I got this wrong would be happy to be corrected by Waymo. They have not commented as far as I know.) A broader safety engineering response: This is not the first time a robotaxi has encountered another car doing donuts in an intersection. In fact, a Cruise robotaxi was hit in a similar situation in March 2023 (SGO 30412-4960). From the description it seems there was plenty of warning this was happening. Why did the robotaxi not stop well clear of the intersection as a prudent human driver would have? Is Waymo monitoring SGO data and learning from what has been reported by other companies? Has Waymo included "other car doing donuts" in its hazard log? Did Waymo decide to ignore mitigation of this hazard for some reason? Will that change now that this has happened to Waymo instead of just Cruise? I'm glad in this case there was no injury, but there certainly could have been but for chance from a rare circumstance that is already known to have caused a crash. Being saved by the “grace of the Gods” is not a safety argument. I hope these questions are being asked and resolved by Waymo. But we won't know until the next donut incident. Primary Source: https://lnkd.in/eFHEMVFX Article: https://lnkd.in/eFVpfjec

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This paper proposes a #coded #reactive #straggler #mitigation with an #uncoded and a #coded #phase for #distributed #matrix-#matrix #multiplications. Specifically, in the uncoded phase of the proposed strategy, the master distributes the computational job without redundancy among the workers. After a predetermined waiting time, the master cancels the remaining tasks. It then encodes the remaining tasks and distributes them among the workers. In the #uncoded #phase, in addition to the #conventional #erasure #model, where workers can communicate only once, we consider #multi-#message #communication (#MMC) model to exploit the partial works done by workers. The optimum waiting time for the uncoded phase and the optimum code rate for the coded phase are also obtained. ----Maryam Haghighi Ardakani, Masoud Ardakani, Chintha Tellambura More details can be found at this link: https://lnkd.in/gDWM-pYc

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Hardware-efficient quantum error correction using concatenated bosonic qubits  by Amazon Web Services (AWS) In order to solve problems of practical importance [1, 2], quantum computers will likely need to incorporate quantum error correction, where a logical qubit is redundantly encoded in many noisy physical qubits [3–5]. The large physical-qubit overhead typically associated with error correction motivates the search for more hardware-efficient approaches [6–16]. Here, using a microfabricated superconducting quantum circuit [17, 18], we realize a logical qubit memory formed from the concatenation of encoded bosonic cat qubits with an outer repetition code of distance d = 5 [10]. The bosonic cat qubits are passively protected against bit flips using a stabilizing circuit [19–23]. Cat-qubit phase-flip errors are corrected by the repetition code which uses ancilla transmons for syndrome measurement. We realize a noise-biased CX gate which ensures bit-flip error suppression is maintained during error correction. We study the performance and scaling of the logical qubit memory, finding that the phase-flip correcting repetition code operates below threshold, with logical phase-flip error decreasing with code distance from d = 3 to d = 5. Concurrently, the logical bit-flip error is suppressed with increasing cat-qubit mean photon number. The minimum measured logical error per cycle is on average 1.75(2)% for the distance-3 code sections, and 1.65(3)% for the longer distance-5 code, demonstrating the effectiveness of bit-flip error suppression throughout the error correction cycle. These results, where the intrinsic error suppression of the bosonic encodings allows us to use a hardware-efficient outer error correcting code, indicate that concatenated bosonic codes are a compelling paradigm for reaching fault-tolerant quantum computation. 

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Space42, the AI-powered space technology company, has been the talk of the town since the merger of Yahsat and Bayanat. But what's with the name "42"? Recent inquiries have prompted me to revisit Douglas Adams' "The Hitchhiker's Guide to the Galaxy", where the answer to life, the universe, and everything is revealed to be 42. However, the catch is that the question itself is unknown. In the book, the second smartest computer in the universe, Deep Thought, is tasked with finding the ultimate question to the ultimate answer. It concludes that the answer is meaningless without a proper question. And so, it builds a new computer, which it names "The Earth", to find the question that goes with the answer. The significance of 42 may be a mystery, but it's clear that Space42 is looking to explore the unknown and find answers to questions we never knew we had. #Yahsat #Bayanat #Space42

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