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Borehole Radar Experiment in a 7500 m Deep Well. [PDF]
Sensors (Basel)Yang H, Wang K, Liu Y, Guo C, Zhao Q.
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Quasi-modified-Newton method-based selective harmonic elimination in cascaded H bridge inverters. [PDF]
Sci RepSaif B +5 more
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OTFS Radar Waveform Design Based on Information Theory. [PDF]
Entropy (Basel)Miao Q, Kuang L, Zhang G, Shao Y.
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Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation. [PDF]
Sensors (Basel)A Zenhom Y +3 more
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A sensitivity matched multicarrier modulation
IEEE Communications Letters, 2002We develop a multicarrier modulation scheme for transmission of compressed data. The energy allocation among subcarriers is optimized by minimizing a modified symbol error function in either AWGN or Rayleigh fading channels. It is observed that our sensitivity matched multicarrier modulation significantly outperforms the conventional multi carrier ...
exaly +2 more sources
Time-limited orthogonal multicarrier modulation schemes
IEEE Transactions on Communications, 1995Time-limited orthogonal (TLO) multicarrier modulation (MCM) schemes with waveform shaping are investigated. The waveform shaped scheme with no frame overlap is spectrally inefficient. An improved scheme is proposed and it is shown that this scheme allows a certain amount of overlap between adjacent frames without destroying the orthogonality, the ...
Renyuan Li, Gunnar Stette
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ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349), 2003
A multicarrier QAM modulator has been developed and simulated. The multicarrier QAM modulator contains four upconversion circuits. Each upconverting circuit accepts 12 b in-phase and quadrature data streams, interpolates those by 16 and upconverts the baseband signal to a selected center frequency.
Jouko Vankka +2 more
openaire +1 more source
A multicarrier QAM modulator has been developed and simulated. The multicarrier QAM modulator contains four upconversion circuits. Each upconverting circuit accepts 12 b in-phase and quadrature data streams, interpolates those by 16 and upconverts the baseband signal to a selected center frequency.
Jouko Vankka +2 more
openaire +1 more source
IEEE Journal on Selected Areas in Communications, 2001
A multicarrier Gaussian minimum shift keying (GMSK) modulator has been developed and implemented. The design contains four GMSK modulators, which generate GMSK modulated carriers at the specified center frequencies. Utilization of the redundancy in the stored waveforms reduces the size of the GMSK trajectory look-up table to less than one-quarter of ...
Jouko Vankka +2 more
openaire +1 more source
A multicarrier Gaussian minimum shift keying (GMSK) modulator has been developed and implemented. The design contains four GMSK modulators, which generate GMSK modulated carriers at the specified center frequencies. Utilization of the redundancy in the stored waveforms reduces the size of the GMSK trajectory look-up table to less than one-quarter of ...
Jouko Vankka +2 more
openaire +1 more source