Results 11 to 20 of about 242 (110)

Simulation of MC-DS-CDMA-System Based on: Wavelet and Slantlet Transforms over Wireless Channel

open access: yesمجلة علوم ذي قار, 2019
In this paper two proposed schemes for improving the performance form the Bit Error Rate (BER) view point were proposed for Multicarrier-Direct-Sequence- Code Division Multiple Access (MC-DS-CDMA) system in wireless channel. The conventional MC-DS-CDMA-
Ahmed Abdel Hadi Fadhel
doaj   +4 more sources

Detection of Signals in MC–CDMA Using a Novel Iterative Block Decision Feedback Equalizer

open access: yesIEEE Access, 2022
This paper presents a technique to mitigate multiple access interference (MAI) in multicarrier code division multiple access (MC-CDMA) wireless communications systems.
Kalapraveen Bagadi   +13 more
doaj   +1 more source

Performance Analysis of MIMO Wavelet Packet Multicarrier Multicode CDMA System with Antenna Selection

open access: yesAdvances in Electrical and Electronic Engineering, 2019
Performance of Multicarrier Multicode Code-Division Multiple Access (MC/MCD-CDMA) systems can be improved significantly by using Wavelet Packets (WPs) as subcarriers instead of a~sinusoidal function.
Maryam Mahmoud Akho-Zahieh   +1 more
doaj   +1 more source

Performance Evaluation of Wavelet Packet Based MC-CDMA and HHT Based MC-CDMA System

open access: yesInternational Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 2014
The main aim of this paper is to investigate the performance of multi-carrier code division multiple access (MC-CDMA) technique, which has gain much attention due to its high frequency spectrum efficiency and high data rate transmission and makes the wireless communication more reliable and efficient.
Rajni Jainwal, Virendra K.Verma
openaire   +1 more source

Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver

open access: yesLaser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.
A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley   +1 more source

Spatial multiplexed coded MC-CDMA with iterative receiver [PDF]

open access: yes2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754), 2005
In this paper, the combination of spatial multiplexing with coded Multi-Carrier Code Division Multiplex Access (MC-CDMA) for a Multiple Input Multiple Output (MIMO) Rayleigh fading multipath channel is considered. A practical receiver structure performing iteratively MIMO detection, multi-user despreading and channel decoding is presented.
Bouvet, Pierre-Jean   +3 more
openaire   +2 more sources

Molecular Engineering of Layered Halide Double Perovskites: Challenges and Opportunities in Optoelectronics and Beyond

open access: yesAdvanced Energy Materials, Volume 15, Issue 41, November 4, 2025.
Layered halide double perovskites have emerged as promising alternatives to toxic lead‐based low‐dimensional perovskite materials for more sustainable optoelectronics. Their molecular design and its impact on the material characteristics, as well as the resulting functionality, is reviewed while discussing challenges and opportunities for future ...
Maryam Ghasemi   +4 more
wiley   +1 more source

Space-Time Coded MC-CDMA: Blind Channel Estimation, Identifiability, and Receiver Design

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
Integrating the strengths of multicarrier (MC) modulation and code division multiple access (CDMA), MC-CDMA systems are of great interest for future broadband transmissions. This paper considers the problem of channel identification and signal combining/
Li Hongbin, Sun Wei
doaj   +1 more source

Higher Order Cumulants for Identification and Equalization of Multicarrier Spreading Spectrum Systems

open access: yesJournal of Telecommunications and Information Technology, 2023
This paper describes two blind algorithms for multicarrier code division multiple access (MC-CDMA) system equalization. In order to identify, blindly, the impulse response of two practical selective frequency fading channels called broadband radio ...
Said Safi   +3 more
doaj   +1 more source

Revealing Chronotypes Across Aquatic Species Using Acoustic Telemetry

open access: yesFish and Fisheries, Volume 26, Issue 6, Page 1134-1145, November 2025.
ABSTRACT Acoustic telemetry offers valuable opportunities to investigate individual variability in circadian‐related and other behaviours and how environmental cues shape these patterns in wild fish populations. However, this potential has not yet been fully exploited.
Martina Martorell‐Barceló   +27 more
wiley   +1 more source

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