Results 71 to 80 of about 5,465 (214)
Data collection in IoT networks: Architecture, solutions, protocols and challenges
IET Wireless Sensor Systems, Volume 14, Issue 4, Page 85-110, August 2024.Current IoT data collection techniques are categorised and a comparative evaluation of these methods is performed based on the topics analysed and elaborated by the authors. In addition, a comprehensive analysis of recent advances in IoT data collection is provided, highlighting different data types and sources, transmission protocols from connected ...
Ado Adamou Abba Ari +6 more
wiley +1 more source
Nuevas técnicas de procesado de señal aplicadas al sistema MC-CDMA en enlace ascendente
, 2002 La presente tesis puede darnos una idea de la complejidad de la transmisión ascendente (UL) y su especificidad en comparación con el esquema descendente, también destacando el impacto que puede tener este modo de transmisión sobre el diseño de los ...
Bader, Faouzi
core
Sequence optimisation for compressed sensing CDMA MIMO radar via mutual coherence minimisation
IET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1178-1192, July 2024.The authors focus on optimising waveforms for CDMA‐MIMO radar systems, particularly for Compressed Sensing (CS) based target estimation. The study introduces an optimisation framework to modify phase components of code sequences, aiming to minimise off‐diagonal elements in the Gramian matrix of the sensing matrix.
Saravanan Nagesh +4 more
wiley +1 more source
Performance Evaluation of Wavelet Packet Based MC-CDMA and HHT Based MC-CDMA System
International 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
Spectral Efficiency Comparison of OFDM and MC-CDMA with Carrier Frequency Offset [PDF]
Radioengineering, 2017 Inter-carrier interference and multiple access interference due to carrier frequency offset (CFO) are two major factors that deteriorate the performance of orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple ...
J. Ahmed
doaj
Suitable Spreading Sequences for Asynchronous MC-CDMA Systems
Journal of Telecommunications and Information Technology, 2018 In order to meet the demand of high data rate transmission with good quality maintained, the multi-carrier code division multiple access (MC-CDMA) technology is considered for the next generation wireless communication systems. However, their high crest
Mouad Addad, Ali Djebbari
doaj +1 more source
STBC MC-CDMA systems for indoor and outdoor scenarios
, 2004 We compare the performance of Alamouti's space-time block coded MC-CDMA systems for indoor and outdoor realistic scenarios with zero forcing or minimum mean square error detection schemes. Two different configurations of the system are considered for the
Auffray, Jean-Michel +3 more
core +1 more source
Blind Identification and Equalization of MC-CDMA Systems Using Higher Order Cumulants
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2014 In this work we propose an algorithm based on fourth order cumulants for identification of the linear system (Finite- Impulse Response (FIR)) with Non Minimum Phase (NMP) excited by non-Gaussian sequences, independent identically distributed (i.i.d).
Mohammed Zidane +3 more
doaj +1 more source
Joint turbo equalization and cancelation of nonlinear distortion effects in MC-CDMA signals [PDF]
, 2006 In this paper, we consider low-PMEPR (Peak-to-Mean Envelope Power Ratio) MC-CDMA (Multicarrier Coded Division Multiple Access) schemes. We develop frequencydomain turbo equalizers combined with an iterative estimation and cancellation of nonlinear ...
Araújo, Teresa +2 more
core
Adaptive Algorithms Versus Higher Order Cumulants for Identification and Equalization of MC-CDMA
Journal of Telecommunications and Information Technology, 2014 In this paper, a comparative study between a blind algorithm, based on higher order cumulants, and adaptive algorithms, i.e. Recursive Least Squares (RLS) and Least Mean Squares (LMS) for MultiCarrier Code Division Multiple Access (MC-CDMA) systems ...
Mohammed Zidane +4 more
doaj +1 more source