Results 31 to 40 of about 14,564 (231)

Unified MIMO-multicarrier designs: a space–time shift keying approach [PDF]

, 2015
A survey and tutorial is provided on the subject of multiple-input multiple-output (MIMO) multicarrier (MC) systems relying on the space-time shift keying concept.
Sugiura, Shinya, Chen, Sheng, Kadir, Mohammad Ismat, Hanzo, Lajos   +3 more
core   +1 more source

Sparse Orthogonal Circulant Transform Multiplexing for Coherent Optical Fiber Communication

IEEE Photonics Journal, 2018
This paper introduces a new multicarrier system, named sparse orthogonal circulant transform multiplexing (S-OCTM), for optical fiber communication. This technique uses an inverse sparse orthogonal circulant transform (S-OCT) matrix, which is simple and ...
Yukui Yu, Wei Wang, Xing Ouyang, Zhenpeng Wang, Jian Zhao   +4 more
doaj   +1 more source

OFDM transmission scheme with subcarrier supply index modulation

Tongxin xuebao, 2023
To address the drawback that subcarrier activation pattern (SAP) of the orthogonal frequency division multiplexing with index modulation (OFDM-IM) cannot match the binary numbers which affects the system performance, the orthogonal frequency division ...
Yi GUO, Yiqing WANG, Yuanyuan FAN, Gang LIU   +3 more
doaj   +2 more sources

Principles，technologies and challenges of OQAM-OFDM for 5G applications

Dianxin kexue, 2016
5G will need to be able to support much larger connections of communication devices and meet the requirements of diverse scenarios.However，this requirement cannot be met by OFDM（orthogonal frequency division multiplexing）due to its own drawbacks.As an ...
Jun LI, Yuan TIAN, Yu QIU, Da CHEN, Tao JIANG   +4 more
doaj   +2 more sources

Robust time synchronization for NC-OFDM cognitive radio systems

Journal of King Saud University: Computer and Information Sciences, 2022
In this paper, we propose a time-synchronization method for non-contiguous orthogonal frequency division multiplexing (NC-OFDM) systems. NC-OFDM is a modulation and multiplexing technique that is often used for cognitive radio (CR) systems. In OFDM-based
Suyoto Suyoto, Sugihartono Sugihartono, Iskandar Iskandar, Adit Kurniawan   +3 more
doaj   +1 more source

Exact BER Analysis of OFDM Systems Communicating over Frequency-Selective Fading Channels Subjected to Carrier Frequency Offset

, 2007
Orthogonal Frequency Division Multiplexing (OFDM) has been employed in numerous wireless standards. However, the performance of OFDM systems is degraded by both the Carrier Frequency Offset (CFO) and the Phase Estimation Error (PER).
Liu, X., Hanzo, L., Lajos Hanzo, Xiang Liu   +3 more
core   +1 more source

Orthogonal frequency division multiplex synchronization techniques for frequency-selective fading channels

, 2001
The effect of time-domain and frequency-domain synchronization errors is quantified in the context of various coherently and noncoherently detected 1, 2, and 4 bits/symbol OFDM constellations, in order to demonstrate the wide applicability of the ...
Piazzo, L., MANDARINI, Paolo, HANZO L., PIAZZO, Lorenzo, Mandarini, P., KELLER T., Keller, T., Hanzo, L.   +7 more
core   +1 more source

A novel preamble design for OFDM transmission parameter signalling

, 2011
A novel preamble design is proposed for orthogonal frequency division multiplexing systems, which exploits the variable distance between a pair of training sequences for the transmission parameter signalling.
Sheng Chen, Zhaocheng Wang, Chen, Sheng, Lifeng He, Wang, Zhaocheng, Fang Yang, Yang, Fang, He, Lifeng, Hanzo, Lajos, Lajos Hanzo   +9 more
core   +1 more source

CLEAR Interference Cancellation in a Wideband Dual‐Channel Receiver for Independent Satellite Multi‐Connectivity Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley   +1 more source

Demonstration of 3D‐Printed Optical Antennas for High‐Speed Optical Wireless Communication Using Market‐Ready Materials

Advanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.
The feasibility of 3D‐printed optical antennas using commercial, non‐optical materials for Optical Wireless Communications (OWC) is demonstrated. This study combines spectral analysis, anisotropy effects, and telecom‐relevant optical measurements, revealing promising performance and novel insights for low‐cost, customizable photonic components in ...
Mauro Aresti, Marco Meucci, Paolo Foggi, Caterina Credi, Satoshi Iketani, Cristiana Lofrumento, Jacopo Catani   +6 more
wiley   +1 more source