Results 31 to 40 of about 4,542,507 (296)
A genetic algorithm based method of optimizing dispersion matrix for RDSM system
Dianxin kexue, 2022 Rectangular differential spatial modulation (RDSM) is a multi-antenna incoherent modulation technology with high spectral efficiency, low power consumption, and zero-overhead for channel estimation.RDSM is especially suitable for 6G communication systems,
Peng ZHANG, Xiaoping JIN, Dongxiao CHEN
doaj
Passive Backscatter Communication Scheme for OFDM-IM with Dynamic Carrier Activation
Sensors, 2023 Multicarrier backscattering has been proposed to improve the communication rate, but the complex circuit structure of multicarrier backscattering devices requires more power consumption, resulting in devices far away from the radio frequency (RF) source ...
Shibao Li, Rui Lu
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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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Modulation index optimization for wavelength modulation spectroscopy [PDF]
, 2016 In this work, the second-harmonic component of wavelength modulation spectroscopy is simulated for R(22) CO2 absorption line to investigate the effect of gas temperature and pressure on the modulation index.
Mohammadi, M. J. +2 more
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Space-Time Index Modulation [PDF]
2017 IEEE Wireless Communications and Networking Conference (WCNC), 2017 In this paper, we present a new multi-antenna modulation scheme, termed as {\em space-time index modulation (STIM)}. In STIM, information bits are conveyed through antenna indexing in the spatial domain, slot indexing in the time domain, and $M$-ary modulation symbols. A time slot in a given frame can be used or unused, and the choice of the slots used
Swaroop Jacob +2 more
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Optimal Mapper for OFDM With Index Modulation: A Spectro-Computational Analysis
IEEE Access, 2020 In this work, we present an optimal mapper for OFDM with index modulation (OFDM-IM). By optimal we mean the mapper achieves the lowest possible asymptotic computational complexity (CC) when the spectral efficiency (SE) gain over OFDM maximizes.
Saulo Queiroz +2 more
doaj +1 more source
Sparse-Encoded Codebook Index Modulation [PDF]
IEEE Transactions on Vehicular Technology, 2020 Ultra-reliable and low-latency communications (URLLC) partakes a major role in 5G networks for mission-critical applications. Sparse vector coding (SVC) appears as a strong candidate for future URLLC networks by enabling superior performance in terms of bit error rate (BER).
Emre Arslan +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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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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