Results 41 to 50 of about 51,738 (210)

Public virtue, private ambition—Women owners of private hospitals in early twentieth‐century New Zealand

open access: yesAsia‐Pacific Economic History Review, EarlyView.
Abstract New Zealand's early‐twentieth‐century health service was a two‐tier system of state hospitals supported by an expanding network of over 300 private hospitals, almost exclusively owned by nurses and midwives. This article will show that this environment was created by a legislative framework introduced between 1901 and 1906, requiring nurses ...
Ann‐Marie Quinn
wiley   +1 more source

Symbol‐Level GRAND‐Assisted Detection for Polar‐Coded Spatial Modulation in MIMO Systems

open access: yesInternational Journal of Communication Systems, Volume 39, Issue 7, 10 May 2026.
This research presents an integrated polar‐coded spatial modulation (PCSM) transceiver scheme for MIMO transmission over Rayleigh fading channels. The proposed architecture employs linear spatial signal processing for antenna and symbol estimation, followed by symbol‐level guessing random additive noise decoding (symbol‐level GRAND)–assisted detection ...
Abhilasha Gautam   +2 more
wiley   +1 more source

Assignment on Carrier Communications Simulation [PDF]

open access: yes, 2008
Simulation of AM, QAM, complex QAM, 4QAM and 16QAM carrier communication schemes in ...
Maunder, Rob
core  

Dynamic QAM Mapping for Physical-Layer Security Using Digital Chaos

open access: yesIEEE Access, 2018
This paper proposes and experimentally demonstrates a physical-layer data encryption scheme using multi-fold chaotic mapping of quadrature amplitude modulation (QAM) symbols in orthogonal frequency-division-multiplexed passive optical network (OFDM-PON).
Amber Sultan   +4 more
doaj   +1 more source

Generalized Quantum Arthur-Merlin Games [PDF]

open access: yes, 2014
This paper investigates the role of interaction and coins in public-coin quantum interactive proof systems (also called quantum Arthur-Merlin games).
Gall, François Le   +2 more
core   +2 more sources

Defence traits vary across leaf ages in the thistles (Cardueae)

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1517-1531, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plants produce a variety of structural and chemical defences to deter herbivores, which can covary across every scale of biological organization. Along these lines, it has been suggested that young leaves differ from old leaves in their defence strategies, but studies ...
Miranda A. Sinnott‐Armstrong   +9 more
wiley   +1 more source

Adaptively Loaded IM/DD Offset-QAM OFDM Based on Set-Partitioned QAM Formats

open access: yesAsia Communications and Photonics Conference, 2017
We propose an adaptive-loading algorithm for SP-QAM formats, and experimentally show that SP-offset-QAM outperforms conventional offset-QAM and conventional SP-QAM, in adaptive-loaded IM/DD OFDM systems, and achieves >40 Gbit/s at 50 km without any guard interval.
Zhao, Jian, Chan, Chun-Kit
openaire   +2 more sources

Enabling Technology in High-Baud-Rate Coherent Optical Communication Systems

open access: yesIEEE Access, 2020
High-baud-rate coherent optical system is essential to support the ever-increasing demand for high-speed applications. Owing to the recent progress in advanced modulation formats, over 1 Tb/s single-carrier data transmission has been achieved in the ...
Si-Ao Li   +10 more
doaj   +1 more source

Performance Improvement of Multi-UserMC-CDMA system Using Discrete Hartly Transform Mapper [PDF]

open access: yesEngineering and Technology Journal, 2013
Future wireless communication systems must be able to accommodate a large number of users and simultaneously to provide the high data rates at the required quality of service. In this paper a method is proposed to perform the N-Discrete Hartley Transform
Ali T. Shaheen
doaj   +1 more source

Physical Layer Network Coding for Two-Way Relaying with QAM

open access: yes, 2013
The design of modulation schemes for the physical layer network-coded two way relaying scenario was studied in [1], [3], [4] and [5]. In [7] it was shown that every network coding map that satisfies the exclusive law is representable by a Latin Square ...
Namboodiri, Vishnu   +2 more
core   +1 more source

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