Results 51 to 60 of about 305,481 (299)

CROSS LAYER BASED THROUGHPUT OPTIMIZATION IN COGNITIVE RADIO NETWORKS WITH EFFECTIVE CHANNEL SENSING SCHEMES [PDF]

ICTACT Journal on Communication Technology, 2010
Cognitive Radio technology is a novel and effective approach to improve utilization of the precious radio spectrum. Spectrum sensing is one of the essential mechanisms for cognitive radio (CR) and various sensing techniques are used by the secondary ...
T.Manimekalai, M.Meenakshi, D. Princy Dinal, R.S.Koteeshwari   +3 more
doaj  

Multi-Radio Based Rendezvous Technique for Heterogeneous Cognitive Radio Sensor Network

Sensors, 2021
In a distributed cognitive radio (CR) sensor network, transmission and reception on vacant channels require cognitive radio nodes to achieve rendezvous.
Md. Tahidul Islam, Sithamparanathan Kandeepan, Robin. J. Evans   +2 more
doaj   +1 more source

Throughput of a Cognitive Radio Network under Congestion Constraints: A Network-Level Study

, 2014
International audience—In this paper we analyze a cognitive radio network with one primary and one secondary transmitter, in which the primary transmitter has bursty arrivals while the secondary node is assumed to be saturated (i.e.
Pappas, Nikolaos, Kountouris, Marios, Pappas, Nikolaos,, Marios Kountouris, Kountouris, Marios,, Nikolaos Pappas   +5 more
core   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Key technologies and research progresses in cognitive SWIPT

Dianxin kexue, 2020
The combination of cognitive radio (CR) and simultaneous wireless information and power transfer (SWIPT) has become one of the research hotspots in modern high-efficient cognitive radio communications.Firstly,the introduction of SWIPT and cognitive SWIPT
Xiaorong XU, Minghang SUN, Linhui SHEN, Yingbiao YAO, Wei FENG   +4 more
doaj   +2 more sources

Optimal sensing performance for cooperative and non-cooperative cognitive radio networks

International Journal of Distributed Sensor Networks, 2017
Spectrum sensing has gained new aspects with the advent of cognitive radio and opportunistic spectrum access techniques. Spectrum sensing plays a vital role in cognitive radio networks, and its reliability determines the success of transmission.
Waqas Khalid, Heejung Yu
doaj   +1 more source

Muscle Control of an Extra Robotic Digit

Advanced Robotics Research, EarlyView.
This study compares muscle‐ and movement‐based control for operating a supernumerary robotic thumb. While movement control performs better in the proposed tasks, muscle‐based (EMG) control promotes broader motor learning. The results highlight the promise and challenges of using biosignals for human augmentation, offering new insights into intuitive ...
Julien Russ, Lucy Dowdall, Francesco Cenciarelli, Kitty Goodridge, Mabel Ziman, Hristo Dimitrov, Danielle Clode, Tamar R. Makin   +7 more
wiley   +1 more source

Novel cooperative power control game algorithm for cognitive radio systems

Tongxin xuebao, 2007
In order to fair optimally allocate the limited cognitive radio resource,a cognitive radio system was developed based on STBC OFDM-CDMA network systems and a novel Nash bargaining solution named NBS of cooperative power control was adopted in this system,
CHENG Shi-lun1, YANG Zhen1, ZHANG Hui2
doaj   +2 more sources

Simulation Tools for Cognitive Radio Network: A Survey

IEEE Access
Due to recent expansion of wireless communications, it has become impossible to cope with the allotment of the precious spectrum while resources for wireless communication are bounded and finite. Hence, the cognitive radio concept is introduced to ensure
A. K. M. Muzahidul Islam, Rakin Bin Rabbani, Md Shadman Aadeeb, Mahdi Zareei, Nafees Mansoor, Molla Md Zubaer   +5 more
doaj   +1 more source

Survey on spectrum sharing/allocation for cognitive radio networks Internet of Things

Egyptian Informatics Journal, 2020
Many IoT applications have been developed recently, this leads to increasing the network load. To avoid the lack of spectrum, IoT can use cognitive radio network concept.
Dina Tarek, Abderrahim Benslimane, M. Darwish, Amira M. Kotb   +3 more
doaj   +1 more source