Results 21 to 30 of about 832,585 (295)
Experimental Verification of Rate Flexibility and Probabilistic Shaping by 4D Signaling [PDF]
, 2018 The rate flexibility and probabilistic shaping gain of $4$-dimensional signaling is experimentally tested for short-reach, unrepeated transmission. A rate granularity of 0.5 bits/QAM symbol is achieved with a distribution matcher based on a simple look ...
Böcherer, Georg +6 more
core +2 more sources
Applied Sciences, 2019 M-ary pulse-amplitude modulation (PAM) meets the requirements of data center communication because of its simplicity, but coarse entropy granularity cannot meet the dynamic bandwidth demands, and there is a large capacity gap between uniform formats and ...
Xiao Han +6 more
doaj +1 more source
Nonbinary ldpc-coded probabilistic shaping scheme for MIMO systems based on signal space diversity
Digital Communications and Networks, 2023 This paper first describes a binary Low-Density Parity-Check (LDPC)-coded Probabilistic Shaping (PS) scheme for Multiple-Input Multiple-Output (MIMO) systems based on Signal Space Diversity (SSD).
Weimin Kang
doaj +1 more source
UWB system based on gain-switched laser [PDF]
, 2006 Simulation results based on an UltraWideBand (UWB) system employing a gain-switched laser are presented. 156 Mb/s data stream modulates the position of short electrical pulses, which are then used to gain-switch the laser.
Kaszubowska-Anandarajah, Aleksandra
core +1 more source
Sensors, 2022 Herein, we present a noise shaping successive-approximation-register (SAR) analog-to-digital converter (ADC) with an embedded passive gain multiplication technique.
Changhyung Choi, Jong-Wook Lee
doaj +1 more source
Modelling self-similar parabolic pulses in optical fibres with a neural network
Results in Optics, 2021 We expand our previous analysis of nonlinear pulse shaping in optical fibres using machine learning [Opt. Laser Technol., 131 (2020) 106439] to the case of pulse propagation in the presence of gain/loss, with a special focus on the generation of self ...
Sonia Boscolo +2 more
doaj +1 more source
Performance of combined constellation shaping and bit interleaved coded modulation with iterative decoding (BICM-ID) [PDF]
Advances in Radio Science, 2011 The increasing demand of achieving high data rates in modern communication systems requires highly efficient bandwidth utilization. For this purpose, multilevel modulation schemes are used in association with forward error correction (FEC) codes in order
T. Arafa, W. Sauer-Greff, R. Urbansky
doaj +1 more source
SNDR sensitivity analysis for cascaded ΣΔ modulators [PDF]
, 2000 Cascade, single and multi-bit, ΣΔ architectures provide stable, high order quantization noise shaping used in high resolution A/D conversion. One major disadvantage of cascaded ΣΔ topologies is the extreme SNDR sensitivity to gain mismatch between the ...
Geddie, C, Hoke, M, Kocak, T, Morizio, J
core +2 more sources
Envelope shaping technology for power amplifier based on PXI platform
上海师范大学学报. 自然科学版, 2017 The difference between Envelope Tracking power amplifier (ETPA) and normal PA is the performance of system which is not only related to the Radio Frequency (RF) input signal,but also related to the envelope signal.In order to deeply analysis the system ...
Du Feifan, Yu Hui
doaj +1 more source
Experimental Demonstration of Geometrically-Shaped Constellations Tailored to the Nonlinear Fibre Channel [PDF]
, 2018 A geometrically-shaped 256-QAM constellation, tailored to the nonlinear optical fibre channel, is experimentally demonstrated. The proposed constellation outperforms both uniform and AWGN-tailored 256-QAM, as it is designed to optimise the trade-off ...
Bayvel, P. +4 more
core +2 more sources