5G research

WNCG Receives Huawei Award for Best Collaboration

WNCG Profs. Gustavo de Veciana and Jeff Andrews recently received an award for Best Collaboration with the wireless group at Huawei. This international award goes to a funded university collaboration the company deems most impactful from among their offices and partner institutions worldwide.  

“We are very pleased to accept this award,” Prof. de Veciana states. “The experience of working with engineers at Huawei has been very rewarding and fun.”  

MmWave channel estimation using sub6-GHz channel information

Due to hardware constraints, millimeter wave (mmWave) channel is not directly accessible and hence estimating mmWave channel for beamforming is difficult. Further, sub-6 GHz and mmWave systems are envisioned to work together, so assuming the knowledge of sub-6 GHz channel is reasonable.  Hence, it is worthwhile to investigate how the channel at sub-6 GHz and mmWave relate. This is particularly important for high mobility scenarios like vehicular communication, where frequent beam-training results in significant overhead.

Sharing Spectrum Licenses in mmWave Cellular Systems

Due to scarcity of spectrum at conventional cellular frequencies (CCF), the use of higher frequencies such as mmWave has been proposed for 5G cellular networks. The cellular systems consist of multiple networks, each deployed by an independent cellular operator with possibly closed access only to its customers. It is worth noting that communication at mmWave frequencies has non-trivial differences when compared to communication at CCF.

Waveform Design for Joint Millimeter Wave Communication and 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.

Analysis of Urban Millimeter Wave Microcellular Networks

Millimeter wave networks are sensitive to blockages due to densely distributed buildings in urban areas. This is critical for vehicle-to-infrastructure networks, which are cellular networks designed to support emerging vehicular applications. Most popular pathloss models use only the Euclidean distance between the transmitter and the receiver to characterize the channel, but in urban environments where severe blockages caused by buildings is often encountered, Euclidean distance does not provide enough information to characterize the pathloss. 

Analysis of Interference Cancellation in mmWave Cellular Systems

In this research, WNCG visiting graduate student Amir Jafari, WNCG graduate student Jeonghun Park and WNCG professor Robert Heath address the benefits of interference cancellation in millimeter-wave (mmWave) cellular systems. Considering a multiple antenna communications system with transmitting and receiving antennas, the receiving antennas can either be exploited to decode data streams in order to achieve spatial multiplexing, or alternatively the receiving antennas can be used to cancel the interference.
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