Document Center

Subscribe to Documents
View
10Per Page
Back to All Documents

View by Topic:

Research and Development(53)

Expand IEEE802.11ac: The Next Evolution of Wi-Fi
802.11ac is the next evolution of the Wi-Fi standard that promises to deliver multiple HD video streams simultaneously. It can reach maximum throughputs well above a Gigabit per second.
PDF
5/11/12
Expand A New kind of network: Open indoor femtos for both indoor and outdoor coverage
This presentation features an overview of the new network model based on neighborhood femtos deployed in an open access mode providing significant capacity and economic benefits
PDF
3/06/12
Expand HetNets Overview Presentation
This presentation describes the HSPA+ HetNets prototype implemented at Qualcomm’s R&D group. Qualcomm is the first company to demonstrate this technique, at MWC 2012. It also illustrates HSPA HetNets gains from Parameter Optimizations, Range Expansion & Multiflow DFDC.
PDF
2/28/12
Expand Neighborhood Femtocell Deployment Model
The traditional model of femtocells is designed for co-channel deployments with a macro carrier for open or restricted access. This white paper discusses a new network model called “Neighborhood Femto” where indoor, open access femtocells provides extended coverage outdoors with compelling data capacity and economic benefits
PDF
2/28/12
Expand High Speed Matching and Tracking Slides
Prof. Tom Drummond participated in the Qualcomm Augmented Reality Lecture Series.
PDF
2/21/12
Expand A Comparison of LTE Advanced HetNets and WiFi
For an LTE operator that needs to significantly increase network capacity, there are two complementary options of offloading macro user traffic – Using LTE Advanced HetNets with small cells (pico cells) in the same channel as macro cells and using 802.11n Wi-Fi access points (APs) in unlicensed spectrum.
PDF
9/27/11
Expand Performance and Implementation of SF-DC Aggregation
The proliferation of 3G services has fuelled continuous enhancements to the WCDMA-HSPA system, such as 64QAM, MIMO, DC-HSDPA and Multi-Carrier HSDPA.
PDF
9/07/11
Expand Relays in HSPAplus Power Control and Mobility
There is substantial and growing motivation to deploy wireless relays in 3G+ and 4G networks both in residential and commercial contexts to achieve significant coverage extension and capacity increases at potentially relatively low cost.
PDF
9/06/11
Expand Performance Gains of Single-Frequency Dual-Cell HSDPA

In this paper, we study the scheme of Single-Frequency Dual-Cell HSDPA (SF-DC HSDPA) which is introduced to simultaneously transmit two separate packet streams from two cells to a mobile. The inter-stream interference is suppressed by the linear-MMSE equalizer at the mobile.

PDF
8/30/11
Expand Dual Cell HSDPA System Benefits and User Experience Gains

Dual Cell-High Speed Downlink Packet Access (DC-HSDPA), which was introduced in Release 8 of the WCDMA specifications, enables the User Equipment (UE) to receive downlink data on two adjacent carriers simultaneously.

PDF
8/30/11