Results 31 to 40 of about 1,531,654 (151)
Advanced Materials Interfaces, Volume 13, Issue 6, 16 March 2026.Mixed halide perovskites suffer from photo‐induced phase segregation, leading to compositional instability and degraded device performance. This review summarizes the dynamic behavior and kinetics of phase segregation in thin films under external stimuli, analyzes compositional and environmental effects, and proposes suppression strategies to enhance ...
Yong Hyun Kim, Hyojung Kim
wiley +1 more source
Spectral-Efficiency of TDD Multiuser Two-Hop MC-CDMA Systems Employing Egocentric-Altruistic Relay Optimization [PDF]
, 2010 In this contribution we investigate the spectral-efficiency of a two-hop cooperative network using multicarrier code-division multiple-access (MC-CDMA) transmission scheme.
Tingting Liu +5 more
core +2 more sources
IET Communications, Volume 20, Issue 1, January/December 2026.This work extends the Polyanskiy‐Poor‐Verdu (PPV) framework to lognormal wireless links. Specifically, the paper derives a closed‐form approximation for the average error probability under lognormal distribution, effectively generalizing the PPV analysis beyond the additive white Gaussian noise assumption.
Peng Du, Yuan Zhang
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Waveform Impact on Wireless Power Transfer Efficiency using Low-Power Harvesting Devices
Electrical, Control and Communication Engineering, 2019 The paper addresses the impact of peak-to-average power ratio (PAPR) and spectrum of the waveform, as well as load resistance on the performance of low-power harvesting device in a real-life wireless power transfer (WPT) scenario. In the current study, a
Eidaks Janis +3 more
doaj +1 more source
Large-Scale Multicast Group Secure Transmission Scheme Based on Multi-Carrier FDA
Sensors, 2023 Aiming at the problem that the traditional physical layer technology cannot realize secure transmission due to the large number of users and wide dispersion in the multicast system, a layered transmission method is proposed, and a scheme for the secure ...
Dan Wu +4 more
doaj +1 more source
Unified Downlink‐Uplink Waveform Optimization For MIMO‐OFDM Integrated Sensing and Communication
IET Communications, Volume 20, Issue 1, January/December 2026.This paper presents a unified waveform allocation framework for downlink and uplink MIMO‐OFDM integrated sensing and communication (ISAC) systems in 6G networks. We develop five optimization schemes, including optimal‐for‐communication, optimal‐for‐sensing, and MMSE‐based joint allocation, with closed‐form expressions for spectral efficiency, sensing ...
Gujjula Ramya +2 more
wiley +1 more source
Electronics Letters, Volume 62, Issue 1, January/December 2026.Two power allocation strategies are proposed for multicarrier DFRC system that are suitable for different communication date rate requirements, which are to minimize the total radiated power with the constraints of communication data rate, CRLB of target time delay estimation and subcarrier power.
Rui Yang, Hong Jiang, Liangdong Qu
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Performance of Generalized Multicarrier DS-CDMA Using Various Chip Waveforms [PDF]
, 2003 In this letter, we extend our investigation of generalized multicarrier direct-sequence code-division multiple access by considering two additional types of chip waveforms, namely, the time-domain half-sine and raised-cosine chip waveforms, in addition ...
Yang, L-L., Hanzo, L.
core +2 more sources
IET Electrical Systems in Transportation, Volume 2026, Issue 1, 2026.In the era of rapid transportation electrification, the integration of power system automation and transportation system networking promotes the construction of comprehensive integration of the highway industry. Due to the huge project and the difficulty of construction, traditional highway construction cannot fully consider the supporting construction
Changhao Li +4 more
wiley +1 more source
Bit and Power Allocation in Constrained Multicarrier Systems: The Single-User Case
EURASIP Journal on Advances in Signal Processing, 2007 Multicarrier modulation is a powerful transmission technique that provides improved performance in various communication fields. A fundamental topic of multicarrier communication systems is the bit and power loading, which is addressed in this article as
Theodore Antonakopoulos +1 more
doaj +1 more source