Results 21 to 30 of about 38,051,230 (246)
Enhancing the Dynamic Range of OFDM Radars Using Non-Linear Operation and Symbol-Based Equalization
IEEE Journal of Microwaves, 2023 Due to the increased flexibility in terms of waveform generation, digitally-modulated radar systems are gaining increasing popularity among research and academia.
Rossen Michev +3 more
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Spectral characterisation of shortened pulse position modulation format [PDF]
, 2010 Shortened pulse position modulation (SPPM) is a new modulation format that has recently been proposed for underwater wireless optical communications. A full spectral characterisation of SPPM is considered and original expressions are presented, which ...
Cryan, R.A.
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Analysis of MSK jamming effectiveness based on effective jamming coefficient
Tongxin xuebao, 2022 For the problem of communication jamming effectiveness, an effective jamming coefficient was proposed as an evaluation metric based on the correlation between jamming and communication signals, and the impact of orthogonal receivers was analyzed ...
Zengmao CHEN +3 more
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Symbol and Bit Error Rates Analysis of Hybrid PIM-CDMA
EURASIP Journal on Wireless Communications and Networking, 2005 A hybrid pulse interval modulation code-division multiple-access (hPIM-CDMA) scheme employing the strict optical orthogonal code (SOCC) with unity and auto- and cross-correlation constraints for indoor optical wireless communications is proposed. In this
Ghassemlooy Z., See C. K.
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Model-based predictive adaptive delta modulation
, 2007 This paper presents a new technique in digital communications that is called model-based-predictive adaptive-delta-modulation (MBP-ADM). MBP-ADM uses system identification tools to identify a model of the signal which is used for prediction.
Sandor M Veres +3 more
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A Nuclear Magnetic Resonance Radiofrequency Pulse Transmitter Based on Digital Modulation Technology
Chinese Journal of Magnetic Resonance, 2018 Radiofrequency (RF) pulse transmitter is an important part of a nuclear magnetic resonance (NMR) spectrometer. In this paper, a simple NMR RF pulse transmitter was designed based on field programmable gate array (FPGA) and direct digital synthesis (DDS ...
ZHU Yun-feng +6 more
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Frontiers in Immunology, 2021 Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of myeloid progenitor cells that dampen overwhelming adaptive immune responses through multiple mechanisms and are recognized as an attractive novel immune intervention therapy for ...
Jasmin Scheurer +7 more
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Design of a simulation for trellis coded modulation [PDF]
, 1992 Bibliography: leaves 116-7.The last decade has shown a very rapid increase in the application of digital computers to virtually all walks of life. This has resulted in a demand for better and faster digital communication links, at reasonable prices ...
Lindebaum, Theo
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Subset Optimization of Adaptive Coding and Modulation Schemes for Broadband Satellite Systems [PDF]
, 2010 The number of Coding and Modulation Schemes suggested for the two standards DVB-S2 and DVB-RCS (in its "advanced" version) is clearly overdimensioned; a subset of schemes can be used by reducing the overall system performance negligibly.
M. Berioli +5 more
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Spectral characterisation of nk pulse position modulation format [PDF]
, 2005 nk pulse position modulation (PPM) is a new modulation format that has recently been proposed for the optical wireless channel. This Letter considers, for the first time, a full spectral characterisation of -PPM and presents original expressions, which
Cryan, R.A., Menon, M.
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