Results 21 to 30 of about 36,530 (229)

Performance Analysis of Multiple Input Multiple Output (MIMO) Multi-Carrier Code-Division Multiple Access (MC-CDMA) Combined with Quasi-Orthogonal Space Time Block Coding (QO-STBC) in Rayleigh Fading Channel

Positron, 2022
The need for a communication system with a higher data rate and mobility grows along with information and communication technology development. Combining MC-CDMA with the MIMO system and supporting the system with a good transmit diversity technique is a
Eka Kusumawardhani, Rina Pudji Astuti, Nachwan Mufti Adriansyah, Fitri Imansyah, Leonardus Sandy Ade Putra   +4 more
doaj   +1 more source

Robust or nonrobust: On MC-DS-CDMA acquisition in LEO satellite communications

Digital Communications and Networks, 2023
Low Earth Orbit (LEO) satellite communications can provide global coverage in the sixth generation communication (6G) networks. To combat the strong Partial Band Interferences (PBIs) and multipath fading in LEO satellite communication systems, the ...
Entong Meng, Xiangyuan Bu, Jihong Yu, Jianping An, Xuanhe Yang   +4 more
doaj   +1 more source

MULTICHANNEL M-ARY BI-ORTHOGONAL KEYING

Information and Telecommunication Sciences, 2015
The new method of Multichannel M-ary Bi-Orthogonal Keying, its operating principle and performance studying are introduced in this paper. Utilized spectral efficiency and BER performance of this method are also studied in comparison with DS-CDMA. Overall
Kateryna P. Kovalchuk, Oleksandr V. Mazurenko   +1 more
doaj   +1 more source

Detection Schemes With Low-Resolution ADCs and Spatial Oversampling for Transmission With Higher-Order Constellations in Terahertz Band

IEEE Access
In this work, we consider Terahertz (THz) communications with low-resolution uniform quantization and spatial oversampling at the receiver side, corresponding to a single-input multiple-output (SIMO) transmission.
Christian Forsch, Peter Zillmann, Osama Alrabadi, Stefan Brueck, Wolfgang Gerstacker   +4 more
doaj   +1 more source

ENHANCEMENT OF CODE DIVISION MULTIPLE ACCESS (CDMA) WITHIN THE GSM SYSTEM IN IRAQ

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Despite the widespread adoption of Global System for Mobile Communications (GSM) in Iraq, the network's capacity and performance limitations have become increasingly apparent, particularly in urban areas with high user density. Currently, LTE (4G) is the
Nabil Abdulwahab Abdulrazaq Baban
doaj   +1 more source

Geometry‐Controlled Assembly of Self‐Standing Nanorods With Undisturbed Plasmonics

Advanced Science, Volume 13, Issue 45, 13 August 2026.
This study reports a geometry‐driven assembly strategy to vertically align Au@Ag core–shell nanorods on PS beads. This well‐defined architecture enables the preservation of the intrinsic optical response of individual nanorods. Thus, demonstrate a highly reproducible SERS enhancement with exceptional uniformity.
Yoel Negrin‐Montecelo, I. Brian Becerril‐Castro, Vladimir A. Baulin, Veronica Salgueiriño, Ramon A. Alvarez‐Puebla, Miguel A. Correa‐Duarte   +5 more
wiley   +1 more source

Análise da Performance da Técnica MC/MC-CDMA

Trends in Computational and Applied Mathematics, 2007
A técnica Multi Portadora / Multi Código CDMA (MC/MC-CDMA) é analisada através de uma comparação do desempenho entre as técnicas Multi Código CDMA e Multi Portadora CDMA.
A.S. Araújo, G.A. Carrijo, E.L. Flores
doaj   +1 more source

Management of Radiodermatitis in Patients With Head and Neck Cancer Undergoing Radiotherapy: A Scoping Review

Health Care Science, Volume 5, Issue 4, Page 364-375, August 2026.
The data obtained through this review highlight the lack of global consensus among radiotherapy centers on the best topical treatment for radiodermatitis. It indicates that the choice of treatment depends on professional judgment due to the absence of standardized guidelines, pointing to the need for more robust scientific research to develop effective
Tâmara Taynah Medeiros da Silva, Louise Constancia de Melo Alves Silva, Thatiane Evelyn de Lima Fernandes, Karena Cristina da Silva Leal, Thaís Brunna Maurício Pinheiro, Guilherme Moises Alves Fernandes, Kátia Regina Barros Ribeiro, Daniele Vieira Dantas, Rodrigo Assis Neves Dantas   +8 more
wiley   +1 more source

Reconfigurable Signal Processing and Hardware Architecture for Broadband Wireless Communications

EURASIP Journal on Wireless Communications and Networking, 2005
This paper proposes a broadband wireless transceiver which can be reconfigured to any type of cyclic-prefix (CP) -based communication systems, including orthogonal frequency-division multiplexing (OFDM), single-carrier cyclic-prefix (SCCP) system ...
Liang Ying-Chang, Naveen Sayed, Pilakkat Santosh K, Marath Ashok K   +3 more
doaj   +2 more sources

Exploiting Dimensionality in Hybrid Metal Halides: Design Strategies, Structure–Property Relationships, Optoelectronic Applications, and Future Perspectives

Small Structures, Volume 7, Issue 7, July 2026.
This review presents a unified structural classification for hybrid metal halides from 3D to 0D. It summarizes dimensional engineering strategies and dimension‐dependent structure–property relationships, offering a systematic framework to guide the design and development of high‐performance low‐dimensional optoelectronic materials.
Ying Liu, Xingyao Zhao, Hongyu Ju, Bin–Bin Cui   +3 more
wiley   +1 more source