Results 41 to 50 of about 1,161,775 (284)
Joint Tomlinson-Harashima precoding and optimum transmit power allocation for SC-FDMA [PDF]
, 2010 Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard.
Nix, AR, Noune, MB
core +2 more sources
Peak-to-average power ratio reduction for OFDM modems [PDF]
The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring., 2004 A novel technique of reducing the peak-to-average power ratio (PAPR) of multi-carrier (MC) modulated signals is proposed. The method advocated is spectrally efficient, has a low implementational complexity and hence it is also suitable for low-power, portable implementation.
Akhtman, J., Bobrowski, B.Z., Hanzo, L.
openaire +2 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
A Generalized Construction of OFDM M-QAM Sequences With Low Peak-to-Average Power Ratio
, 2009 A construction of $2^{2n}$-QAM sequences is given and an upper bound of the peak-to-mean envelope power ratio (PMEPR) is determined. Some former works can be viewed as special cases of this construction.Comment: published by Advances in Mathematics of ...
Feng, Rongquan +2 more
core +1 more source
Correlative coding with clipping and filtering technique in OFDM Systems [PDF]
, 2003 The major setbacks of Orthogonal Frequency Multiplexing (OFDM) is its peak-to-average power ratio (PAPR) and intercarrier interference (ICI). The occurrence of these factors restricts its application.
Fisal, Norsheila, Yusof, S. K.
core +1 more source
Multiple ETS family transcription factors bind mutant p53 via distinct interaction regions
FEBS Letters, EarlyView.Mutant p53 gain‐of‐function is thought to be mediated by interaction with other transcription factors. We identify multiple ETS transcription factors that can bind mutant p53 and found that this interaction can be promoted by a PXXPP motif. ETS proteins that strongly bound mutant p53 were upregulated in ovarian cancer compared to ETS proteins that ...
Stephanie A. Metcalf +6 more
wiley +1 more source
Peak-to-average power ratio of a Zipper signal [PDF]
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002 We investigate the peak-to-average power ratio (PAR) and its effects on the performance of Zipper-VDSL systems. The spectrum and the out of band power when passing through a nonlinear device is also investigated. We further evaluate the performance with a recently proposed PAR reduction technique for orthogonal frequency division multiplexing (OFDM ...
A.D.S. Jayalath, C. Tellambura
openaire +1 more source
A 2.5-GHz asymmetric multilevel outphasing power amplifier in 65-nm CMOS [PDF]
, 2011 We present a high-efficiency transmitter based on asymmetric multilevel outphasing (AMO). AMO transmitters improve their efficiency over LINC (linear amplification using nonlinear components) transmitters by switching the output envelopes of the power ...
Barton, Taylor W. +5 more
core +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
ICT Express, 2022 Orthogonal Frequency Division Multiplexing (OFDM) is the best choice for wireless and wired high data rate communications. The OFDM system has many advantages such as high spectral efficiency, robustness to channel fading, and immunity to impulse ...
Ahmed K. Abed +2 more
doaj +1 more source