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Browsing MIT Open Access Articles by Author "Katabi, Dina"

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Browsing MIT Open Access Articles by Author "Katabi, Dina"

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  • Suresh Kumar, Swarun; Cifuentes, Diego Fernando; Gollakota, Shyamnath; Katabi, Dina (Association for Computing Machinery, 2013-08)
    Recent years have seen major innovations in cross-layer wireless designs. Despite demonstrating significant throughput gains, hardly any of these technologies have made it into real networks. Deploying cross-layer innovations ...
  • Suresh Kumar, Swarun; Shi, Lixin; Ahmed, Nabeel; Gil, Stephanie; Katabi, Dina; Rus, Daniela L. (Association for Computing Machinery, 2012-09)
    This paper introduces CarSpeak, a communication system for autonomous driving. CarSpeak enables a car to query and access sensory information captured by other cars in a manner similar to how it accesses information from ...
  • Gollakota, Shyamnath; Adib, Fadel M.; Katabi, Dina; Seshan, Srinivasan (Association for Computing Machinery, 2011-08)
    Recent studies show that high-power cross-technology interference is becoming a major problem in today’s 802.11 networks. Devices like baby monitors and cordless phones can cause a wireless LAN to lose connectivity. The ...
  • Suresh Kumar, Swarun; Gollakota, Shyamnath; Katabi, Dina (Association for Computing Machinery, 2012-08)
    This paper presents Carcel, a cloud-assisted system for autonomous driving. Carcel enables the cloud to have access to sensor data from autonomous vehicles as well as the roadside infrastructure. The cloud assists autonomous ...
  • Jakubczak, Szymon Kazimierz; Katabi, Dina (Association for Computing Machinery (ACM), 2011-09)
    Today's mobile video suffers from two limitations: 1) it cannot reduce bandwidth consumption by leveraging wireless broadcast to multicast popular content to interested receivers, and 2) it lacks robustness to wireless ...
  • Wang, Jue; Hassanieh, Haitham; Katabi, Dina; Indyk, Piotr (Association for Computing Machinery (ACM), 2012-09)
    There is a long-standing vision of embedding backscatter nodes like RFIDs into everyday objects to build ultra-low power ubiquitous networks. A major problem that has challenged this vision is that backscatter communication ...
  • Hassanieh, Haitham; Adib, Fadel M.; Katabi, Dina; Indyk, Piotr (Association for Computing Machinery, 2012-08)
    GPS is one of the most widely used wireless systems. A GPS receiver has to lock on the satellite signals to calculate its position. The process of locking on the satellites is quite costly and requires hundreds of millions ...
  • Rahul, Hariharan Shankar; Edalat, Farinaz; Katabi, Dina; Sodini, Charles G. (Association for Computing Machinery (ACM), 2009-09)
    There has been burgeoning interest in wireless technologies that can use wider frequency spectrum. Technology advances, such as 802.11n and ultra-wideband (UWB), are pushing toward wider frequency bands. The analog-to-digital ...
  • Gollakota, Shyamnath; Perli, Samuel David; Katabi, Dina (Association for Computing Machinery (ACM), 2009-08)
    The throughput of existing MIMO LANs is limited by the number of antennas on the AP. This paper shows how to overcome this limit. It presents interference alignment and cancellation (IAC), a new approach for decoding ...
  • Adib, Fadel M.; Suresh Kumar, Swarun; Aryan, Omid; Gollakota, Shyamnath; Katabi, Dina (Association for Computing Machinery, 2013-09)
    Recent years have witnessed increasing interest in interference alignment which has been demonstrated to deliver gains for wireless networks both analytically and empirically. Typically, interference alignment is achieved ...
  • Hassanieh, Haitham; Indyk, Piotr; Katabi, Dina; Price, Eric C. (Association for Computing Machinery (ACM), 2012-05)
    We consider the problem of computing the k-sparse approximation to the discrete Fourier transform of an n-dimensional signal. We show: An O(k log n)-time randomized algorithm for the case where the input signal has at most ...
  • Gollakota, Shyamnath; Katabi, Dina (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)
    There is a growing interest in physical layer security. Recent work has demonstrated that wireless devices can generate a shared secret key by exploiting variations in their channel. The rate at which the secret bits are ...
  • Lin, Kate Ching-Ju; Gollakota, Shyamnath; Katabi, Dina (Association for Computing Machinery (ACM), 2011-08)
    This paper presents the design and implementation of 802.11n+, a fully distributed random access protocol for MIMO networks. 802.11n+ allows nodes that differ in the number of antennas to contend not just for time, but ...
  • Shen, Wei-Liang; Tung, Yu-Chih; Lee, Kuang-Che; Lin, Kate Ching-Ju; Gollakota, Shyamnath; Katabi, Dina; Chen, Ming-Syan (Association for Computing Machinery, 2012)
    In multiuser MIMO (MU-MIMO) networks, the optimal bit rate of a user is highly dynamic and changes from one packet to the next. This breaks traditional bit rate adaptation algorithms, which rely on recent history to predict ...
  • Wang, Jue; Katabi, Dina; Adib, Fadel M.; Knepper, Ross Alan; Rus, Daniela L. (Association for Computing Machinery (ACM), 2013-09)
    Modern robots have to interact with their environment, search for objects, and move them around. Yet, for a robot to pick up an object, it needs to identify the object's orientation and locate it to within centimeter-scale ...
  • Adib, Fadel M.; Katabi, Dina (Association for Computing Machinery, 2013)
    Wi-Fi signals are typically information carriers between a transmitter and a receiver. In this paper, we show that Wi-Fi can also extend our senses, enabling us to see moving objects through walls and behind closed doors. ...
  • Andoni, Alexandr; Hassanieh, Haitham; Indyk, Piotr; Katabi, Dina (Society for Industrial and Applied Mathematics, 2013-01)
    We study the following basic pattern matching problem. Consider a “code” sequence c consisting of n bits chosen uniformly at random, and a “signal” sequence x obtained by shifting c (modulo n) and adding noise. The goal ...
  • Hassanieh, Haitham; Indyk, Piotr; Katabi, Dina; Price, Eric C. (Society for Industrial and Applied Mathematics, 2012-01)
    We consider the sparse Fourier transform problem: given a complex vector x of length n, and a parameter k, estimate the k largest (in magnitude) coe fficients of the Fourier transform of x. The problem is of key interest ...
  • Rahul, Hariharan Shankar; Katabi, Dina; Hassanieh, Haitham (Association for Computing Machinery (ACM), 2010-08)
    Diversity is an intrinsic property of wireless networks. Recent years have witnessed the emergence of many distributed protocols like ExOR, MORE, SOAR, SOFT, and MIXIT that exploit receiver diversity in 802.11-like networks. ...
  • Gollakota, Shyamnath; Hassanieh, Haitham; Ransford, Benjamin; Katabi, Dina; Fu, Kevin (Institute of Electrical and Electronics Engineers (IEEE), 2011-08)
    Wireless communication has become an intrinsic part of modern implantable medical devices (IMDs). Recent work, however, has demonstrated that wireless connectivity can be exploited to compromise the confidentiality of IMDs' ...
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