Results 81 to 90 of about 14,564 (231)

A new reduced-complexity detection scheme for zero-padded OFDM transmissions

EURASIP Journal on Wireless Communications and Networking, 2011
Recently, zero-padding orthogonal frequency division multiplexing (ZP-OFDM) has been proposed as an alternative solution to the traditional cyclic prefix (CP)-OFDM, to ensure symbol recovery regardless of channels nulls.
Eghbali Homa, Muhaidat Sami
doaj  

Estudo de técnicas de formatação de feixe para transmissão OFDM [PDF]

, 2004
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia ElétricaEsta dissertação apresenta um estudo do comportamento de diversos algoritmos adaptativos capazes de realizar a formatação
Lima, Gustavo Corrêa
core  

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING [PDF]

, 2020
Orthogonal frequency division multiplexing (OFDM) is a method of modulation of digital signal ...
Priti Dhama, Pallavi Goel
core  

Unified Model and Survey on Modulation Schemes for Next-Generation Automotive Radar Systems

Remote Sensing
Commercial automotive radar systems for advanced driver assistance systems (ADASs) have relied on frequency-modulated continuous wave (FMCW) waveforms for years due to their low-cost hardware, simple signal processing, and established academic and ...
Moritz Kahlert, Tai Fei, Yuming Wang, Claas Tebruegge, Markus Gardill   +4 more
doaj   +1 more source

OFDM–IDMA for Uplink Transmission in Passive Optical Networks

IEEE Photonics Journal, 2012
In this paper, we propose the orthogonal frequency-division multiplexing-interleaved division multiplexing access (OFDM-IDMA) technique for passive optical networks (PONs).
C. Sanchez, B. Ortega, J. Capmany
doaj   +1 more source

Efficient Intercarrier Interference Mitigation for Pilot-Aided Channel Estimation in OFDM Mobile Systems

, 2011
Motivated by the possibility of decreasing the intersymbol interference (ISI) which is due to large delays of a multipath mobile radio channel, orthogonal frequency division multiplexing (OFDM) became very popular. However, the timevariance of the mobile
Groh, Ingmar, Dammann, Armin
core  

Generalized Filter Bank Orthogonal Frequency Division Multiplexing: Low-Complexity Waveform for Ultra-Wide Bandwidth and Flexible Services

Entropy
Terahertz (THz) communication is a crucial technique in sixth generation (6G) mobile networks, which allow for ultra-wide bandwidths to enable ultra-high data rate wireless communication.
Yu Xin, Jian Hua, Tong Bao, Yaxing Hao, Ziheng Xiao, Xin Nie, Fanggang Wang   +6 more
doaj   +1 more source

Research on modified selected mapping technique for PAPR reduction and reception performance improvement in 8QAM-OFDM optical access systems

Journal of the European Optical Society-Rapid Publications, 2017
Background Orthogonal frequency division multiplexing has been regarded as one of the promising technologies for the optical access systems application.
Yufeng Shao, Wenzhe Ma
doaj   +1 more source

Securing Communication Channels: An Advanced Steganography Approach With Orthogonal Frequency Division Multiplexing (OFDM)

Journal of Electrical and Computer Engineering
Orthogonal frequency division multiplexing (OFDM) is a widely used modern communications technology due to its resistance to selective frequency fading and efficient use of spectrum. However, the security of OFDM signals remains a source of serious concern, especially in the face of network encryption that aims to disrupt communications or extract ...
Ammar Mohammedali Fadhil, Ali Y. Jaber
openaire   +2 more sources

OFDM over IEEE 802.11b hardware for telemedical applications

, 2004
Using a wireless Local Area Network (WLAN) to transmit live high-quality video suitable for a telemedical application presents many challenges, including ensuring sufficient Quality of Service (QoS) for the end-user to be able to make an accurate ...
Owens, TJ, Song, YH, Banitsas, KA
core