Results 191 to 200 of about 29,857,416 (243)
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Research on Multi-carrier System Based on Index Modulation
2020Multi-carrier modulation technology can improve spectrum efficiency in limited spectrum resources by modulating data to low speed parallel multiple subcarriers, and can provide reliable data transmission in an effective frequency band. As a member of multicarrier modulation, orthogonal Frequency Division Multiplexing (OFDM) can resist certain channel ...
Dong Wang, Jie Yang, Bing Zhao
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Local carrier-based precision approach and landing system
2016 IEEE 55th Conference on Decision and Control (CDC), 2016Preliminary results on the design of a precision positioning system for planes landing on an aircraft carrier in the absence of Global Positioning System (GPS) are discussed. This system relies on a set of radio transmitters similar to GPS satellite transmitters that are placed on the deck of the ship.
Jason T. Isaacs +2 more
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A Subscriber Carrier System Based Upon Frame Addressing System
IEEE Transactions on Communications, 1978A new channel assignment scheme called a frame addressing system is proposed in this paper to realize an efficient telephone subscriber carrier system by means of PCM loop having a simplified switching capability at each subscriber. In the frame addressing system, a speech signal time slot is assigned by sending a bit for each subscriber at the ...
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Design and Analysis of the EWFRFT-based Extended Hybrid Carrier System
2021 International Wireless Communications and Mobile Computing (IWCMC), 2021In this paper, we propose a security scheme based on extended weighted fractional Fourier transform to guarantee the physical layer security of wireless communication. The proposed scheme extends the existing fractional Fourier transform and reduces the equivalent signal-to-noise ratio and recognition probability of the eavesdropper by utilizing the ...
Ge Song, Xiaojie Fang, Xuejun Sha
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2013 22nd Wireless and Optical Communication Conference, 2013
In this paper, we focus on the resource scheduling of Long Term Evolution - Advanced (LTE-A) with Carrier Aggregation (CA). Application of CA meets the demand of bandwidth in LTE-A by aggregating several discrete carriers together. With different fading characters, the aggregated carriers have different coverage between each other.
Weihong Fu +3 more
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In this paper, we focus on the resource scheduling of Long Term Evolution - Advanced (LTE-A) with Carrier Aggregation (CA). Application of CA meets the demand of bandwidth in LTE-A by aggregating several discrete carriers together. With different fading characters, the aggregated carriers have different coverage between each other.
Weihong Fu +3 more
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Novel Silicon Based Gene Carrier Systems
Advances in Science and Technology, 2010The preparation and charactersiation of novel gene vehicles based on synthetic organic silicon derivatives are which are formulated as solid lipid nanoparticles (SLN) and liposomes are investigated in the presented study. Physicochemical parameters and morphology were studied by photon correlation spectroscopy, zeta potential measurements (NanoZ ...
Anett Sommerwerk +6 more
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Microscopic theory of carrier‐carrier scattering in nitride based quantum‐dot systems
physica status solidi c, 2006AbstractA microscopic theory is applied to study carrier‐carrier Coulomb scattering in nitride‐based quantum dots. Kinetic equations for the carrier population are used to define capture and relaxation rates. For the states involved in the scattering processes, the combined influence of the quantum‐confined Stark effect and manybody renormalizations is
T. R. Nielsen +4 more
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SandStone: A DHT Based Carrier Grade Distributed Storage System
2009 International Conference on Parallel Processing, 2009Peer-to-peer (P2P) systems have drawn a lot of attention from telecom research communities, due to their advantages such as high scalability and cost-effectiveness. Many P2P inspired architectures have been proposed to implement the traditional telecom functionalities such as rendezvous service and even wireless networking.
Guangyu Shi +6 more
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Wavelet-based multi-carrier CDMA for personal communications systems
1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings, 2002Based on the properties of wavelet orthogonal basis, three novel wavelet-based multi-carrier CDMA (MC-CDMA) systems are proposed, and their advantages and performances are investigated by the comparison with the conventional MC-CDMA systems. For the additive white Gaussian noise (AWGN) channel, all three wavelet-based MC-CDMA systems possess the same ...
KyungHi Chang, XuDuan Lin, Huijuan Li
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An Equal Component Power-Based Generalized Hybrid Carrier System
IEEE Communications Letters, 2019In this letter, we derive the basic conditions that should be met for the weighted signal suitable for the communication system and extend the weighted fractional Fourier transform-based classical hybrid carrier system to the generalized hybrid carrier system.
Cong Ma 0003 +3 more
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