Projects/Programs

Displaying 1 - 10 of 10

Asynchronous Cooperative Linear Dispersion Coding

Completed

The space–time block coding (STBC) techniques provide full spatial diversity in the context of collocated multiple-input–multiple-output (MIMO) systems, requiring reliable wireless communications at high rates. However, it may not always be practical to accommodate multiple antennas at the mobile

Cooperative Diversity Routing and Transmission for Wireless Sensor Networks

Completed

In order to address the challenges of cooperation, PHY layer cooperation schemes were proposed and, to a limited extent, medium access control (MAC) layer schemes. On the network layer, the network coding techniques can be viewed as a form of cooperation as well. To the best of our knowledge, there

Cooperative vs Non-Cooperative Diversity in Space, Time and Frequency

Completed

Broadband communication plays an increasingly important role in meeting the growing demand for high-speed multimedia transmissions in our daily lives. However, when the bandwidth of a signal exceeds the coherent bandwidth of the wireless channel, the small-scale fading imposed on the signal becomes

Cooperative Single-Carrier FDMA Communications

Completed

The worldwide growth in both the number of mobile subscribers and their demand for increased rate mobile broadband services provided further impetus for the mobile telecommunication operators to improve both the capacity and the reliability of cellular networks. When communicating over broadband

5G/6G Core Networks and Services

Ongoing

The main tasks of this program are: Task 1: 6G Core Network Architecture: I nvestigating AI-native architectures that not just execute AI/ML-based network functions but also support the creation, management, cooperation, measurement, and evolution of these functions. Task 2: Key Technologies Task 2

Directional Routing Protocols for Ad-hoc Networks

Completed

In wireless ad-hoc networks smart antenna techniques, capable of providing spatial reuse, longer ranges, interference suppression and other beneficial features, have been investigated to improve achievable performance and system capacity. Most works in current open literature focus on the design and

Indoor Localization and Tracking

Completed

Please see the page that describes NIST work in this area.

Low-Complexity Optimized MIMO Receiver

Completed

Transmit diversity is a very significant characteristic which a Multiple-Input Multiple-Output (MIMO) communication system possesses. Nevertheless, due to the size of a mobile phone, the 10λ distance between two antennas allowing each channel to be independent is difficult to fulfill. Against this

Picture of prototype ultrasonic wearable device for proximity detection

Proximity Detection for Electronic Contact Tracing

Completed

We are developing performance metrics for not just ranging, but also for detecting close contacts, which in the context of COVID-19 is the situation where two people are less than six feet apart with no obstacles between them. Obviously, the duration of a close contact is important, as it affects

Wireless Access Networks

Completed

MIMO is a most attractive multi-antenna technique that has been adopted by many emerging wireless communication standards, such as Wireless LAN (WLAN) and fifth generation wireless (5G), owing to the achievable antenna array, multiplexing, and diversity gain. In order to improve link reliability

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