Optimized Incremental Selection Hybrid Decode-Amplify-Forward Relaying Cooperation for Average Transmission Power Reduction

2021 ◽  
Author(s):  
Xiaoyao Guo ◽  
Jianrong Bao ◽  
Xiaorong Xu ◽  
Chao Liu ◽  
Bin Jiang
Keyword(s):  
Power Reduction ◽  
Transmission Power ◽  
Average Transmission

Performance Analysis of FSK-PPM Technique in Visible-Light Communication Systems

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Mehmet Sönmez
Keyword(s):  
Visible Light ◽  
Communication Systems ◽  
Average Power ◽  
Visible Light Communication ◽  
Transmission Power ◽  
Rate Performance ◽  
Power Requirement ◽  
Modulation Techniques ◽  
Shift Keying ◽  
Average Transmission

AbstractThis paper presents a combination of the FSK (frequency shift keying) and the PPM (pulse position modulation) techniques for visible-light communication systems. We propose novel modulator architecture, which is referred as combined FSK-PPM (CFPPM), to observe the average power requirement of FSK technique. The proposed combined scheme is compared with the traditional FSK method in terms of average transmission power and BER (bit error rate) performance. The average transmission power of FSK modulation technique is independent on M that is expressed as modulation order. The results show that the requirement of average transmission power of proposed FSK can be gradually decreased dependent on M.

scholarly journals Power Control in Wireless Sensor Networks with Variable Interference

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Michele Chincoli ◽  
Aly Aamer Syed ◽  
Georgios Exarchakos ◽  
Antonio Liotta
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Power Control ◽  
Network Performance ◽  
Interference Mitigation ◽  
Power Reduction ◽  
Sensor Nodes ◽  
Spectrum Efficiency ◽  
Wireless Sensor ◽  
Transmission Power

Adaptive transmission power control schemes have been introduced in wireless sensor networks to adjust energy consumption under different network conditions. This is a crucial goal, given the constraints under which sensor communications operate. Power reduction may however have counterproductive effects to network performance. Yet, indiscriminate power boosting may detrimentally affect interference. We are interested in understanding the conditions under which coordinated power reduction may lead to better spectrum efficiency and interference mitigation and, thus, have beneficial effects on network performance. Through simulations, we analyze the performance of sensor nodes in an environment with variable interference. Then we study the relation between transmission power and communication efficiency, particularly in the context of Adaptive and Robust Topology (ART) control, showing how appropriate power reduction can benefit both energy and spectrum efficiency. We also identify critical limitations in ART, discussing the potential of more cooperative power control approaches.

scholarly journals Noisy Radar Interception Based on Using Detection Theory

2019 ◽  
pp. 323-330
Author(s):  
Mohammad Lohrasbi ◽  
Hojjat Raisee
Keyword(s):  
Detection Theory ◽  
Power Reduction ◽  
Transmitted Wave ◽  
Transmission Power ◽  
Unknown Parameters ◽  
Low Probability

Low Probability of Interception (LPI) radars are difficult to be detected by interception devices and anti-radiation missiles due to their special properties. Using techniques such as transmission power reduction, these radars significantly reduce the probability of interception for intercept receivers. Noisy radar is a type of Low Probability of Interception (LPI) radars that reduces the probability of interception using a noise-like waveform. This paper intends to study this particular type of radar, and intercept it in intercept receivers. Furthermore, using detection theory, and also known or unknown parameters of the noisy radar's transmitted wave, the probability of interception is studied in these radars.

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