Gregg A. Charlton

System level performance of millimeter-wave access link for outdoor coverage

The increased demand on data and the scarcity of available bandwidth motivate research for new technologies beyond 4G. In this paper we provide a system level study of a new cellular architecture that incorporates millimeter wave technology (60 GHz) for the access link. A system level simulation is carried out for a university campus and an urban environment and the sensitivity to various design parameters has been studied. The objective of such a system is to provide up to 500X the wireless network capacity that is delivered today without a significant increase in energy or deployment costs.

The Effect of Human Blockage on the Performance of Millimeter-Wave Access Link for Outdoor Coverage

In this paper we study the effect of human blockage on a new cellular architecture that incorporates millimeter wave technology for the access link. Assumptions, methodology, and simulation results are discussed to analyze the effect of human blockage on this type of deployment. A statistical model for human blockage and self blockage of the millimeter wave (mmW) signal is presented and analyzed. Our simulations show that even with a simple modulation scheme, an average network throughput of 400 Gbps/km2 is achieved. The objective is to propose and demonstrate that such an architecture is capable of providing high throughput services to outdoor users even in heavily crowded areas.

Protocols and system capacity of relay-enhanced HSDPA systems

In this paper we examine the impact of using relays on the throughput and coverage of the High-Speed Packet Downlink Access (HSDPA) cellular system.We consider two cooperation schemes that can be incorporated into the existing HSPDA system with relative ease. Using a system-level simulation approach we demonstrate that relaying, when properly designed and deployed, can have a significant positive impact on the throughput and coverage of cellular systems.