Results 81 to 90 of about 637,226 (201)

Coherent and Differential Downlink Space-Time Steering Aided Generalised Multicarrier DS-CDMA

, 2007
This paper presents a generalised MultiCarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink.
El-Hajjar, Mohammed, Hu, B, Yang, L-L, Hanzo, L   +3 more
core   +1 more source

Performance Evaluation of Wavelet Packet Based Multicarrier Modulation (WPMCM) System with PAPRs Reduction over Frequency Selective Rayleigh Fading HF Channel

Journal of Engineering and Sustainable Development, 2011
The effectiveness of Wavelet Packet based Multicarrier Modulation (WPMCM) with modulation is investigated, for communication over HF channel. The simulation results show that the performance of the proposed WPMCM system is better than that of ...
Fadhil S. Hasan , Ammar G. Samir
doaj  

Underwater acoustic FBMC communication with multiple mode index modulation

EURASIP Journal on Wireless Communications and Networking
In underwater acoustic communication (UWA), there is a significant presence of multipath and Doppler spread. The integration of orthogonal frequency division multiplexing (OFDM) with index modulation (IM), utilizing subcarrier index modulation to enhance
Ziqian Li, Biao Wang, Tao Fang, Yunan Zhu, Haotian Lyu   +4 more
doaj   +1 more source

An Efficient Design of One and Two-Dimensional DWMT-MCM

Journal of Communications Software and Systems
Primarily two areas of research progress are made in this paper: Discrete Wavelet Transform based Multicarrier Modulation (DWT-MCM), and the Discrete Wavelet Multitone based Multicarrier Modulation (DWMT-MCM). In this work, an efficient design of one and
Yahya Jasim Harbi, Naseem Kadhim B. Al-Mudhaffar, Heba Abdul-Jaleel Al-Asady, Ali K. Al-Janabi   +3 more
doaj   +1 more source

Time-Hopping Multicarrier Code-Division Multiple-Access

, 2006
A time-hopping multicarrier code-division multiple-access (TH/MC-CDMA) scheme is proposed and investigated. In the proposed TH/MC-CDMA each information symbol is transmitted by a number of time-domain pulses with each time-domain pulse modulating a ...
Yang, L.-L., Lie-liang Yang
core   +1 more source

On the Inadequacy of IEC 60034-2-3 and IEC 60034-30-2 Standards for Power Losses, Efficiency and Energy Class Evaluation in PWM Multilevel Inverter-Driven PMSM

IEEE Open Journal of the Industrial Electronics Society
This work aims to highlight the inadequacy of international standards IEC 60034-2-3 and IEC 60034-30-2 for accurate efficiency, power losses, and efficiency class determination of ac motors fed by multilevel inverters driven with multicarrier pulsewidth ...
Claudio Nevoloso, Salvatore Foti, Gioacchino Scaglione, Antonino Oscar Di Tommaso, Salvatore De Caro, Antonio Testa, Rosario Miceli   +6 more
doaj   +1 more source

Parametric Multicarrier Systems with Rotation Based Modulation

Rotation-based unitary transformations have gained remarkable interest due to such excellent features as parameterization, fast algorithms and generalization of other transforms.
Āboltiņš, Artūrs
core  

An efficient real-time model of a five level modular multilevel converter with modified pulse width modulation technique for reduced switching frequency

Measurement + Control
Modular multilevel converters are widely used voltage source converters in a variety of applications, such as power transmission, renewable energy, and motor drives.
Bhavik Brahmbhatt, Jigar Sarda, Chetan Bariya, Sun Young Choi, Kueh Lee Hui, Mangal Sain   +5 more
doaj   +1 more source

Slow Frequency-Hopping Multicarrier DS-CDMA for Transmission over Nakagami Multipath Fading Channels

, 2001
A novel multiple access scheme based on slow frequency hopping multicarrier direct-sequence code division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrowband CDMA ...
Yang, L-L., Hanzo, L.
core   +1 more source

Deep residual network enhanced with multilevel residual-of-residual for automatic classification of radio signals for 5G and beyond systems. [PDF]

Sci Rep
Jabeur R, Alaerjan A, Chikha HB.
europepmc   +1 more source