A Simplified Scheme of Estimation and Cancellation of Companding Noise for Companded Multicarrier Transmission Systems [PDF]
, 2015 Nonlinear companding transform is an efficient method to reduce the high peak-to-average power ratio (PAPR) of multicarrier transmission systems. However, the introduced companding noise greatly degrades the bit-error-rate (BER) performance of the ...
Jian, W. +4 more
core +2 more sources
Optimal training sequences for channel estimation in cyclic-prefix-based single-carrier systems with transmit diversity [PDF]
, 2004 In this paper, we investigate a new class of training sequences that are optimal for least squares (LS) channel estimation in systems employing transmit diversity and single-carrier (SC) modulation with a cyclic prefix (CP) extension.
Beach, MA, Coon, J, McGeehan, JP
core +2 more sources
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 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
Power savings analysis of clipping and filtering method in OFDM systems [PDF]
, 2008 The clipping and filtering method is analyzed in terms of power savings. The analysis takes account of the gain in the amplifier efficiency due to peak-to-average-power-ratio (PAPR) reduction.
Al-Qahtani, F +3 more
core +1 more source
CDMA signature sequences with low peak-to-average-power ratio via alternating projection [PDF]
, 2004 Several algorithms have been proposed to construct optimal signature sequences that maximize the sum capacity of the uplink in a direct-spread synchronous code division multiple access (CDMA) system.
Dhillon, Inderjit S. +3 more
core
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
Dual-drive LiNbO_3 interferometric Mach-Zehnder architecture with extended linear regime for high peak-to-average OFDM-based communication systems [PDF]
, 2011 A dual-drive LiNbO3 architecture modulator with chirp management is proposed and developed offering SFDR > 25 dB in a 1.4 V bias excursion compared to only 0.5 V bias excursion in a conventional Mach-Zehnder electro-optical modulator (MZ-EOM).
Alexandre Mottet +9 more
core +1 more source
Peak-to-Average Power Ratio Reduction of OTFS Based on Precoding DFT-Spread
IEEE AccessOrthogonal time frequency space (OTFS) modulation can effectively combat the multipath and Doppler effects in doubly-selective channels, making it suitable for high-speed mobility scenarios.
Haiqing Guan +4 more
doaj +1 more source
A novel frequency-domain implementation of Tomlinson-Harashima precoding for SC-FDMA [PDF]
, 2009 There is considerable interest in the use of single carrier frequency division multiple access (SC-FDMA) as the uplink transmission scheme in the 3GPP Long Term Evolution standard. This interest is justified by the inherent single carrier structure of SC-
Nix, AR, Noune, MB
core +2 more sources