Related Experiment Video
Updated: Jan 28, 2026
08:25
Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver
Published on: August 27, 2021
3.0K
Analyzing Power Beacon Assisted Transmission with Imperfect CSI in Wireless Powered Sensor Networks
Xuanxuan Tang1, Wendong Yang2, Yueming Cai3
1College of Communications Engineering, Army Engineering University of PLA, No. 88 Houbiaoying, Qinhuai District, Nanjing 210007, China. tang_xx@126.com.
Sensors (Basel, Switzerland)
|February 23, 2019
Summary
This study introduces Maximal Ratio Transmission (MRT) and Maximal Ratio Combining (MRC) for wireless powered sensor networks. Optimizing sensor transmit power enhances network capacity, even with imperfect channel information.
Area of Science:
- Wireless Communication
- Sensor Networks
- Energy Harvesting
Background:
- Wireless powered sensor networks (WPSNs) face challenges in energy management and reliable data transmission.
- Power beacons (PBs) offer a solution for energy harvesting, but performance is affected by channel conditions and imperfect channel state information (CSI).
Purpose of the Study:
- To propose and analyze Maximal Ratio Transmission (MRT) and Maximal Ratio Combining (MRC) protocols for PB-assisted WPSNs.
- To investigate the impact of imperfect CSI on network performance.
- To optimize sensor transmit power for enhanced network capacity.
Main Methods:
- Utilized Markov chain theory to model energy arrival and departure of sensors.
- Formulated and derived analytical expressions for network transmit probability, effective ergodic capacity, and overall ergodic capacity.
- Optimized sensor transmit power to maximize overall ergodic capacity.
Main Results:
- Increased antennas at the PB and destination significantly improve transmit probability and effective ergodic capacity.
- Decreased channel correlation factors degrade network performance.
- Optimized sensor transmit power effectively boosts overall ergodic capacity.
Conclusions:
- The proposed MRT and MRC protocols enhance performance in PB-assisted WPSNs.
- Imperfect CSI significantly impacts network efficiency, highlighting the need for robust protocols.
- Transmit power optimization is crucial for maximizing network capacity in energy-constrained wireless systems.
More Related Videos
07:33In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
Published on: May 5, 2023
1.1K
11:16Engineering Platform and Experimental Protocol for Design and Evaluation of a Neurally-controlled Powered Transfemoral Prosthesis
Published on: July 22, 2014
16.7K
Related Concept Videos
01:08Power
13.0K
The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
13.0K
01:22Instantaneous Power
906
Instantaneous power is important in electrical circuits, mainly when dealing with sinusoidal input. Instantaneous power, denoted as p(t), results from the multiplication of the instantaneous voltage (v(t)) across an element and the instantaneous current (i(t)) flowing through it. This relationship adheres to the passive sign convention and represents a fundamental principle in electrical engineering.
906
01:14Complex Power
902
Power engineers have introduced the concept of complex power to determine the cumulative effect of parallel loads. This idea plays a crucial role in power analysis because it encompasses all the details related to the power consumed by a specific load.
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
902
01:07Electrical Power
3.8K
Electric power is the product of current and voltage, represented in units of joules per second, or watts. For example, cars often have one or more auxiliary power outlets with which you can charge a cell phone or other electronic devices. These outlets may be rated at 20 amps and 12 volts, so that the circuit can deliver a maximum power of 240 watts. Consider a 25 Watt bulb and a 60 Watt bulb. The conversion of electrical energy produces heat and light, while the kinetic energy lost by the...
3.8K
01:22Sums of Power
66
In definite integration, Riemann sums approximate the area under a curve by dividing it into subintervals and summing the areas of rectangles. When these approximations follow predictable numerical patterns, such as arithmetic or polynomial sequences, sum formulas offer a more efficient and accurate way to compute the result. In particular, the sum of consecutive integers, squares, and cubes plays an essential role in simplifying these calculations, especially when dealing with uniform...
66
02:36Nuclear Power
9.5K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.5K