Results 11 to 20 of about 49,826 (236)
IEEE Wireless Communications Letters, 2018 Orthogonal frequency division multiplexing (OFDM) with index modulation (IM) is a multicarrier transmission technique for frequency-selective fading channels. Although it is energy and spectral efficient, its performance may not be satisfactory as some active subcarriers can be suppressed by fading. In this letter, we consider trellis coded modulation (
Jinho Choi 0001, Youngwook Ko
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IMPLEMENTING CHANNEL ESTIMATION AND MODULATION TECHNIQUES USING MIMO-PSK [PDF]
Proceedings on Engineering SciencesWireless communication must be designed with the inbuilt characteristics inclusive of high data rates, transmission efficiency, high quality of data transmission and multimedia transmission in communication framework.
K. R. Priya Dharshini , R. Kalaivani
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ESTIMATION OF POTENTIAL PARAMETERS FOR 5G MOBILE NETWORKS RADIOCHANNELS
Information and Telecommunication Sciences, 2023 Background. Deploying of 5G mobile networks opens up wide opportunities for the development of IoT, high-speed access to Internet services, industrial automation, telemedicine and other modern services.
Ігор Березовський +1 more
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Robust OFDM timing synchronisation [PDF]
, 2005 A new pre-FFT synchronization method for OFDM is proposed and assessed that gives improved performance in multipath channels. The technique can be used for a range of OFDM signal parameters, and channel environments.
Williams, C +5 more
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A Survey on Physical Layer Performance of MIMO-WiMAX [PDF]
E3S Web of ConferencesThe IEEE 802.16 WiMAX standard for BWA (Broadband Wireless Access) was designed to offer end users high transmission data rates across wider regions.Wireless communication requires MIMO systems because they enable data to be sent and received through ...
Naveena A., Divya Udataneni
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Information and Telecommunication Sciences, 2022 Background. As a result of the rays’ reflection from buildings, from the surface of the Earth or from horizontal boundaries between different layers of the atmosphere, occur multipath effects that cause fast fading, which degrades the quality of service.
Леонід Уривський +1 more
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Performance Evaluation of Dual Tree Complex Wavelet Packet Modulation (Dt-Cwpm) System Over Multipath Rayleigh Fading Channel [PDF]
Engineering and Technology Journal, 2013 The effectiveness of Dual Tree Complex Wavelet Packet Modulation (DT-CWPM) with DQPSK modulation is investigated for communication over flat and frequency selective Rayleigh fading channel. The simulation results show that the performance of the proposed
Hikmat N. Abdullah +2 more
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A new technique for OFDM: OFDM-index modulation
2013 21st Signal Processing and Communications Applications Conference (SIU), 2013 In this study, a novel scheme called orthogonal frequency division multiplexing with index modulation (OFDM-IM) is proposed for frequency selective channels. In this scheme, the information is conveyed not only by only M-ary signal constellations as in classical OFDM, but also by the indices of the active subcarriers, which are determined according to ...
Basar, Ertuğrul +3 more
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Homodyne OFDM using simple optical carrier recovery [PDF]
, 2014 We demonstrate a novel optical injection locking approach to carrier recovery in RF-pilot aided OFDM. Any need for optical pre-filtering is eliminated and only very narrow guard bands are required.
Wu, D.S. +7 more
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Comparison of FFT-Based and DCT-Based Channel Estimation and ECC for OFDM System [PDF]
Engineering and Technology Journal, 2015 Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method for high data rate wireless communications. In this paper, two schemes are proposed.
Awatif Ali Jafaar
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