Robert Heath

WNCG Faculty and Students Showcase Innovation During SXSW 2015

An incubator of cutting-edge technologies and digital creativity, SXSW Interactive 2015 featured five days of presentations and panels from the brightest minds in emerging technology. Special programs showcased new websites, video games and startup ideas from the community.

WNCG at SXSW Interactive 2015

WNCG Faculty and students met on Sunday with researchers from the Center for Transportation Research (CTR) and other UT Austin Cockrell School Engineers during the first-ever UT Village at SXSW Interactive 2015. 

This year's event featured panels and interactive research demonstrations and was open to all SXSW Interactive 2015 Badge Holders. Click the image below to view the complete slideshow from the day's events.

 

Inaugural D-STOP Symposium Explores Pathways to Connected, Autonomous Transportation World

In 2013, 32,719 fatalities resulted from traffic crashes, most of which were caused by driver error. Across the globe, people are facing longer commutes and five Texas communities are in the top 26 most congested cities in the United States. Traffic congestion creates about 4.8 billion hours of travel delay and affects the environment through increased carbon footprints and higher fuel consumption.

WNCG Welcomes New Director for Three-Year Term

Every few years, WNCG welcomes a new Director and Associate Director from among its faculty ranks. With an academic culture that encourages openness and research collaborations among equals, the rotation of Directors provides each faculty member with the opportunity to lead WNCG.

Limited Feedback Hybrid Precoding for Multi-User Millimeter Wave Systems

The large bandwidths in the mmWave spectrum make mmWave communication desirable for wireless local area networking and also a promising candidate for future cellular systems. Achieving high quality communication links in mmWave systems requires employing large antenna arrays at both the access point or base station (BS) and the mobile stations (MS). For efficient system performance, each BS needs to simultaneously serve a number of MS. Multiplexing different data streams to different users requires some form of precoding be applied to generate the transmitted signal at the BS.

Millimeter Wave Vehicular Communication Radar

Surface transportation safety can be enhanced by the use of wireless technologies, mainly automotive radar and vehicle-to-vehicle (V2V) communication. Automotive radar provides a high-resolution low-latency approach for a continuous automatic detection and ranging of both communication-enabled and non-communication-enabled transportation users. V2V systems rely on the collaborative communication between vehicles to achieve a real-time cooperative detection and ranging. They can operate beyond the line-of-sight constraints of radar solutions.

Analysis of Self-Body Blocking Effect in mmWave Cellular Networks

The millimeter wave (mmWave) spectrum is a strong candidate carrier frequency for access channels in 5G cellular networks. Unfortunately, measurements show the human body heavily attenuates mmWave signals, e.g. by a factor of 20-40 dB. Consequently, users’ bodies may attenuate the direct signal, cause signal outage, and further change the base station associations. The effect of self-body blocking was not incorporated in prior performance analysis of mmWave cellular networks.
 

Channel Estimation in Millimeter Wave MIMO Systems with One-Bit Quantization

Millimeter wave (mmWave) is a technology that can provide high bandwidth communication links in cellular systems. As mmWave uses larger bandwidths, the corresponding sampling rate of the analog-to-digital converter (ADC) scales up. Unfortunately, high speed, high resolution (e.g., 6-12 bits) ADCs are costly and power-hungry for portable devices. A possible solution is to live with ultra low resolution ADCs (1-3 bits), which reduces power consumption and cost.

Millimeter Wave for Electronic Wearable Networks

Wearable communication networks are the next frontier for wireless communications. Wearable networks connect different devices in and around the human body, including low-rate devices like pedometers and high-rate devices like augmented-reality glasses. Such networks might use wireless standards like IEEE 802.11ad, WirelessHD, or even next generation millimeter (mmWave) 5G cellular to support device-to- device communication at Gbps rates.

Performance Analysis of Pair-Wise Dynamic Multi-User Joint Transmission

In multi-cell cooperative networks, base station (BS) cooperation with BS clustering is indispensable for alleviating cooperation costs (e.g., data and channel estimation sharing via backhaul links). The performance of such BS cooperation is fundamentally limited by the unmanageable out-of-cluster interference. The out-of-cluster interference power is mainly a function of a set of the distances from the out-of-cluster BSs to users, the path-loss exponent, the cluster size, and the cooperative transmission strategies used in the out-of-cluster.

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