Results 61 to 70 of about 637,226 (201)
Performance Evaluation of OTFS and OFDM in Rayleigh Fading Channel
Journal of Engineering, Volume 2026, Issue 1, 2026.Orthogonal time–frequency space (OTFS) modulation is a crucial technology for addressing the challenges of 5G and 6G networks. OTFS was developed to address the problems of signal weakness and quality loss in mobile environments, such as those experienced by a user in a fast‐moving car or train; this is achieved by reducing intercarrier interference ...
Marwa Y. Abdulla +3 more
wiley +1 more source
Optimum Mode-Switching-Assisted Constant-Power Single- and Multicarrier Adaptive Modulation
, 2003 A set of optimum mode-switching levels is derived for a generic constant-power adaptive-modulation scheme based on a closed-form expression of the average bit error ratio (BER) and the average bits-per-symbol (BPS) throughput of the adaptive-modulation ...
Choi, B.J., Hanzo, L.
core +1 more source
Reliable Deep Learning–Assisted Spectrum Sensing for Cognitive Radio and 6G Wireless Networks
Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.Reliable spectrum sensing is a key requirement for cognitive radio (CR) networks; however, its performance is significantly degraded by fading, noise uncertainty, and channel estimation errors. This paper proposes a hybrid gated recurrent unit–long short‐term memory–convolutional neural network (GRU–LSTM–CNN) framework for cooperative spectrum sensing (
Arun Kumar +5 more
wiley +1 more source
Performance analysis and simulation of FMT system in the presence of frequency offset
Tongxin xuebao, 2005 Filtered multitone modulation is one of the filter bank modulation techniques. It exhibits significantly lower spectral overlapping between adjacent subchannels.
ZHU Wei-hong +3 more
doaj +2 more sources
CDMA Transmission with Complex OFDM/OQAM
EURASIP Journal on Wireless Communications and Networking, 2008 We propose an alternative to the well-known multicarrier code-division multiple access (MC-CDMA) technique for downlink transmission by replacing the conventional cyclic-prefix orthogonal frequency division multiplexing (OFDM) modulation by an advanced ...
Lélé Chrislin +3 more
doaj
On the Road to 5G: Comparative Study of Physical Layer in MTC Context
IEEE Access, 2017 During the past few years, we are witnessing the emergence of 5G and its high-level performance targets. Waveform (WF) design is one of the important aspects for 5G that received considerable attention from the research community in recent years. To find
Yahia Medjahdi +11 more
doaj +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
Synchronization Algorithms for FBMC Systems [PDF]
, 2009 Filter bank multicarrier (FBMC) systems, such as FMT and OFDM/OQAM systems, can provide reduced sensitivity to narrowband interference, high flexibility to allocate group of subchannels to different users and a high spectral containment.
Petrella, Angelo
core +1 more source
, 2005 —In multicarrier code-division multiple-access (MCCDMA), the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband signal is transmitted using a subcarrier frequency.
Yang, L-L., Hanzo, L.
core +1 more source
Turbo-per-Tone Equalization for ADSL Systems
EURASIP Journal on Advances in Signal Processing, 2005 We study the equalization procedure in discrete multitone (DMT)-based systems, in particular, in DMT-based ADSL systems. Traditionally, equalization is performed in the time domain by means of a channel shortening filter.
Vanhaute Hilde, Moonen Marc
doaj +1 more source