Results 71 to 80 of about 10,985 (203)

Asymptotic probability bounds on the peak distribution of complex multicarrier signals without Gaussian assumption [PDF]

, 2003
Multicarrier signals exhibit a large peak to mean envelope power ratio (PMEPR). In this paper, we derive the lower and upper probability bounds for the PMEPR distribution when entries of the codeword, C, are chosen independently from a symmetric q-ary ...
Hassibi, Babak, Sharif, Masoud
core  

Development of a field‐programmable gate array‐based real‐time generic solver for power electronics circuits with arbitrary configurations

High Voltage, Volume 10, Issue 1, Page 47-55, February 2025.
Abstract Using a field‐programmable gate array (FPGA) as the core computational engine, this paper proposes a digital real‐time electromagnetic transient simulator for a generic power electronic system. The LC switching model is employed for constant network conductance representation. The fully paralleled and pipelined design for network solutions and
Yuan Chen, Jiadai Liu, Hui Ding, Yi Zhang   +3 more
wiley   +1 more source

Single Carrier Cyclic Prefix-Assisted CDMA System with Frequency Domain Equalization for High Data Rate Transmission

EURASIP Journal on Wireless Communications and Networking, 2004
Multiple-access interference and interfinger interference limit the capacity of conventional single-carrier DS-CDMA systems. Even though multicarrier CDMA posses the advantages of conventional CDMA and OFDM, it suffers from two major implementation ...
Madhukumar A. S., Chin Francois, Liang Ying-Chang, Yang Kai   +3 more
doaj   +2 more sources

Multicarrier dual-index permuted chaos shift keying system for efficiency improvement in chaotic communications

ETRI Journal
We propose a multicarrier chaotic system that incorporates dual-index and M-ary modulation techniques. The proposed system improves the energy andspectrum efficiencies with a tradeoff in computational complexity.
Bavatharani Gurusamy, Laxmikandan Thangavelu, Manimekalai Thirunavukkarasu   +2 more
doaj   +1 more source

Filter Bank Multicarrier Communication With Real Part and Imaginary Part Index Modulation

IEEE Open Journal of the Communications Society
This paper presents a novel variant of filter bank multicarrier (FBMC) communication, which carries additional bits through mapping the real and imaginary parts of the symbol to the active time-frequency (TF) points, called FBMC with real part and ...
Yunan Zhu, Haining Huang, Zhanqing Pu, Biao Wang, Yu Li   +4 more
doaj   +1 more source

Research on automatic modulation recognition of shortwave signals in few‐shot scenarios based on knowledge distillation

IET Communications, Volume 19, Issue 1, January/December 2025.
A multi‐information fusion method is proposed for few‐shot modulation recognition, which involves converting I/Q signals into A/P signals and training with a combination of VGG and LSTM network models. An ensemble knowledge distillation approach is employed to streamline the network model, meeting the demands for deploying neural network models on ...
Qi Yao, Jingjing Yang, Ming Huang
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, GAO Zhen-ming, GAO You-jun, XU Feng   +3 more
doaj   +2 more sources

Sum-rate maximisation comparison using incremental approaches with different constraints [PDF]

, 2009
In this work, the problem of rate maximisation of multichannel systems is considered. Two greedy allocation approaches using power (GPA) and bit (GBA) loading schemes with a slight difference in design constraints that aiming to maximise the overall ...
Al-Hanafy, Waleed, Weiss, S.
core  

A Novel FBMC/QAM Scheme to Eliminate the Error Floor in Multipath Channels

IET Communications, Volume 19, Issue 1, January/December 2025.
This paper proposes a cyclic prefix–based filter bank multicarrier with quadrature amplitude modulation (CP‐FBMC/QAM) scheme to eliminate the error floor and simplify the receiver in multipath fading channels. Moreover, to avoid the increase of out‐of‐band (OOB) radiation caused by the CP insertion, we propose a prototype filter optimization problem ...
Yufeng Zhang, Xueqin Chen
wiley   +1 more source

Performance Enhancement of Indoor VLC Systems Using DPSS‐Based DCO‐GFDM Modulation

IET Communications, Volume 19, Issue 1, January/December 2025.
VLC is a promising solution for future wireless communication systems due to its high data rate, wide bandwidth, and enhanced security features. However, challenges such as high PAPR and OOB spectral leakage limit its performance. In this study, we propose the integration of DPSS with DCO‐GFDM to enhance the performance of indoor VLC systems.
Amin Emami, Gholamreza Baghersalimi, Hossein Goorani   +2 more
wiley   +1 more source