Results 31 to 40 of about 68,492,323 (167)
Parallel-Interference-Cancellation-Assisted Decision-Directed Channel Estimation for OFDM Systems using Multiple Transmit Antennas [PDF]
, 2005 The number of transmit antennas that can be employed in the context of least-squares (LS) channel estimation contrived for orthogonal frequency division multiplexing (OFDM) systems employing multiple transmit antennas is limited by the ratio of the ...
Munster, M., Hanzo, L.
core +2 more sources
Achieving Transmit Diversity in OFDM-IM by Utilizing Multiple Signal Constellations
IEEE Access, 2017 Orthogonal frequency division multiplexing (OFDM) index modulation (IM) is a novel multicarrier modulation, which employs both the indices of the active subcarriers and conventional constellation symbols to convey information.
Jianping Zheng, Ru Chen
doaj +1 more source
Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
wiley +1 more source
Adaptive redundant residue number system coded multicarrier modulation
, 2000 The novel class of nonbinary maximum minimum distance redundant residue number system (RRNS) codes is invoked in the context of adaptively RRNS coded, symbol-by-symbol adaptive multicarrier modulation, in order to combat the effects of frequency ...
Liew, T.H., Keller, T., Hanzo, L.
core +1 more source
International Journal of Satellite Communications and Networking, Volume 44, Issue 6, Page 689-699, November/December 2026.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
Design of OFDM-IM system based on IRS-assisted
Dianxin kexue, 2023 Index modulation (IM) and intelligent reflecting surface (IRS) are emerging mobile communication technologies.In order to improve the reliability of traditional orthogonal frequency division multiplexing (OFDM) system, an orthogonal frequency division ...
Mengmeng ZHAO, Liming HE, Fangfang LIU
doaj +2 more sources
Reed-Muller Code-Based Index Codebook Design for Dual-Mode OFDM-IM
IEEE AccessThe orthogonal frequency division multiplexing with index modulation (OFDM-IM) is a research topic attracting attention due to its ability to enhance efficiency by carrying additional bits.
Seunggi Choi, Hosung Park
doaj +1 more source
Low-Complexity Subcarrier-Wise Detection for MIMO-OFDM With Index Modulation
IEEE Access, 2017 Multiple-input multiple-output orthogonal frequency division multiplexing with index modulation (MIMO-OFDM-IM) is a relatively new multicarrier transmission technique for the MIMO systems to achieve both energy and spectral efficiency.
Zeng Hu +5 more
doaj +1 more source
Orthogonal frequency division multiplexing with cascade index modulation
IET Communications, 2022 As an emerging technique, index modulation (IM) can improve the system bit error rate (BER) performance due to the robustness of index bits over conventional modulated symbol bits.
Zeng Hu +3 more
doaj +1 more source
Study on Analysis of Dispersion for TDM‐GPON System With Different Parameters
Engineering Reports, Volume 8, Issue 8, August 2026.The workflow and simulated outcomes of a 32‐user bidirectional TDM‐GPON system simulated in OptiSystem 19 to evaluate the effects of optical fiber dispersion under various data rates, fiber lengths, and dispersion levels are shown in the graphical abstract.
Molla Belete Salelgne +2 more
wiley +1 more source