4 papers
A Modified CSMA/CA Protocol for OFDM Underwater Networks: Cross Layer Design
Yanling Yin, Sumit Roy, Payman Arabshahi
The underwater acoustic channel continues to present significant challenges to efficient throughput performance of underwater acoustic sensor networks (UASNs) in varying scenarios.…
PCF Scheme for Periodic Data Transmission in Smart Metering Network with Cognitive Radio
Yue Yang, Sumit Roy
The next generation Advanced Metering Infrastructure (AMI), with the aid of two-way Smart Metering Network (SMN), is expected to support many advanced functions. In this work, we f…
Capacity Considerations for Secondary Networks in TV White Space
Farzad Hessar, Sumit Roy
The so-called `TV white spaces' (TVWS) - representing unused TV channels in any given location as the result of the transition to digital broadcasting - designated by U.S. Federal…
Minimum Energy Source Coding for Asymmetric Modulation with Application to RFID
Farzad Hessar, Sumit Roy
Minimum energy (ME) source coding is an effective technique for efficient communication with energy-constrained devices, such as sensor network nodes. In this paper, the principles…