My Work

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Resume

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Last Update: Jan. 2017

CV

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Last Update: Jan 2017

 

Summary

  • Ph.D. in Electrical Engineering from Rice University with emphasis on end-to-end wireless system design, prototyping, evaluation, and deployment.
  • Six years accumulated expertise in medium access, physical layer protocols and Wi-Fi standards including: TVWS 802.11af, Wi-Fi 802.11a/b/g, MIMO 802.11n/ac, millimeter-wave 802.11ad, as well as OFDM, TCP/UDP, cellular technologies and traffic analysis.
  • Complementary expertise in programming and simulation tools, programmable radio platforms and advanced signal analysis instrumentation.
  • Comprehensive theoretical expertise in electrical and communication systems engineering, with analytical depth in communications and signal processing, networking and digital communications.
  • Broad leadership and multidisciplinary teamwork experience.
  • Professionally trained in written and oral scientific communications.

Publications

Google Scholar Profile

Conference and Journals

  • A. Flores, S. Quadri, and E. Knightly, “A Scalable Multi-User Uplink for Wi-Fi,” in Proceedings of NSDI 2016, Santa Clara, CA, March 2016. [Paper] [Slides] (45 out of 225 submissions, acceptance ratio: 20%)
  • T. Nitsche, A. Flores, E. Knightly, and J. Widmer, “Steering with Eyes Closed: mm-Wave Beam Steering without In-Band Measurement,” in Proceedings of IEEE INFOCOM 2015, Hong Kong, China, April 2015. [Paper] [Slides] (316 out of 1640 submissions, acceptance ratio: 19.2%)
  • T. Nitsche, C. Cordeiro, A. Flores, E. Knightly, E. Perahia and J. Widmer, “IEEE 802.11ad: Directional 60 GHz Communication for Multi-Gbps Wi-Fi,” IEEE Communications Magazine, 52(12):132-141, December 2014. [Paper]
  • A. Flores and E. Knightly, “Virtual Duplex: Scaling Dense WLANs and Eliminating Contention Asymmetry,” in Proceedings of IEEE Workshop on Cognitive Radio Architectures for Broadband, Raleigh, NC, October 2014. Best Paper Award [Paper] [Slides]
  • A. Flores, R. Guerra, E. Knightly, P. Ecclesine and S. Pandey, “IEEE 802.11af: A Standard for TV White Space Spectrum Sharing,”” IEEE Communications Magazine, 51(10):92-100, October 2013. [Paper]

Patents

  • A. Flores and E. Knightly, “A Scalable Multi-User Uplink for Wi-Fi,” US Provisional Patent, December 2015.
  • A. Flores and E. Knightly, “Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads,” US Patent pending, October 2013.

Theses

  • A. Flores, “Scaling Uplink Throughput in WLANs”, Rice University Doctoral Dissertation, May 2016.
  • A. Flores, “Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads,” Rice University Masters Thesis, August 2013. [Ms Thesis]

Ph.D. Thesis (Aug. 13- May 16)

Scaling Uplink Throughput in WLANs

Mobile devices have fewer antennas than access points due to size and energy constraints. This antenna asymmetry restricts uplink performance. In my thesis, I design, implement and experimentally evaluate two standard compliant solutions that enable multiplexing gains in uplink transmissions for both single-user and multi-user paradigms.  I designed the first distributed and scalable systems to achieve full-rank uplink capacity for multiple-users without control signaling and enable a single-antenna user to spoof an unmodified AP to infer it has an antenna-array and spatial multiplexing capabilities.

Masters Thesis (Jan. 12- Aug. 13)

Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads

Commonly, the load transmitted from the AP to the clients (downlink), far outweighs traffic demand from the clients to the AP (uplink), yielding traffic asymmetry. When many clients associate with a single AP, uplink traffic has a higher probability of gaining the medium, resulting in medium contention asymmetry. I designed and evaluated Dual Wi-Fi, a MAC architecture and protocol that minimizes MAC overhead by matching spectrum resources to traffic asymmetry. Dual Wi-Fi separates uplink and downlink data traffic into two variable-width independent channels, each allocated in accordance to the network’s traffic demand. [MS Thesis]

Presentations

Posters