Results 41 to 50 of about 723,859 (290)
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
IEEE Photonics Journal, 2022 This paper investigates optical orthogonal frequency division multiplexing (O-OFDM) systems with index modulation (IM) based on discrete Hartley transform (DHT) for visible light communications (VLC). An interesting trade-off between spectral efficiency (
Xian-Ying Xu, Qi Zhang, Dian-Wu Yue
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Secure Index and Data Symbol Modulation for OFDM-IM
IEEE Access, 2017 In this paper, we propose a secure index and data symbol modulation scheme for orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems.
Yonggu Lee +3 more
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LDPC Decoding With Low Complexity for OFDM Index Modulation
IEEE Access, 2021 In this paper, the posterior probabilities of the low-density parity check (LDPC) coded bits are derived for the orthogonal frequency division multiplexing index modulation (OFDM-IM) system to reduce the implementation complexity of LDPC decoding without
Eunchul Yoon +3 more
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Multi-Hop Index Modulation-Aided OFDM With Decode-and-Forward Relaying
IEEE Access, 2018 In this paper, we propose a multi-hop index modulation-aided orthogonal frequency-division multiplexing (IM-aided OFDM) system, which employs decode-and-forward (DF) relaying techniques to enable the transmission of information from source to destination
Zhongli Wang +2 more
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ETRI Journal, 2022 In this study, a novel group-indexed orthogonal frequency division multiplexing index modulation (OFDM-IM) scheme is proposed to achieve a tradeoff between spectral efficiency (SE) and bit-error-rate (BER) performance.
Thomas Wilfred Edison Athisaya Anushya +2 more
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Joint Radar-Communication System Design Based on FDA-MIMO via Frequency Index Modulation
IEEE Access, 2023 The index modulation based on multiple-antenna architecture is a prospective information embedding approach for the joint radar-communication system (JRCS).
Mengjiao Li, Wen-Qin Wang
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A monolithic MQW InP-InGaAsP-Based optical comb generator [PDF]
, 2007 We report the first demonstration of a monolithic optical-frequency comb generator. The device is based on multi-section quaternary/quaternary eight-quantum-well InP-InGaAsP material in a frequency-modulated (FM) laser design. The modulation is generated
Cannard, P +8 more
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Linear Constellation Precoded OFDM With Interleaved Subcarrier Index Modulation
IEEE Access, 2019 Orthogonal frequency-division multiplexing with index modulation (OFDM-IM) is an emerging and promising multicarrier transmission technique; however, frequency diversity achievement requires further investigation for the OFDM-IM.
Qingbo Wang +3 more
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Packet-Level Index Modulation for LoRaWAN
IEEE Access, 2021 The long range wide area network (LoRaWAN) is one of the enabling technologies for low power wide area (LPWA) networks. In LoRaWAN, a node transmits its packet to a gateway (GW) in an autonomous and decentralized manner.
Koichi Adachi +5 more
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