Results 31 to 40 of about 229,527 (307)

A Jamming-Resilient and Scalable Broadcasting Algorithm for Multiple Access Channel Networks

Applied Sciences, 2021
Multiple access channel (MAC) networks use a broadcasting algorithm called the Binary Exponential Backoff (BEB) to mediate access to the shared communication channel by competing nodes and resolve their collisions.
Bader A. Aldawsari, Jafar Haadi Jafarian
doaj   +1 more source

Particle Filtering for Multiple Access DS/CDMA Systems DS/CDMA Channel Estimation

Semina: Ciências Exatas e Tecnológicas, 2013
This article discusses computational implementation aspects and performance of a Bayesian methodology, namely particle filter (PF). The PF channel estimation technique is directly applied to the channel coefficients estimation of DS/CDMA systems ...
Rafael Oliveira Ribeiro, Taufik Abrao
doaj   +1 more source

Information Rates on a Symbol-Asynchronous Multi-Access Channel

IEEE Open Journal of the Communications Society, 2020
Capacity of uncoordinated multiple access channel (MAC) with single-user demodulation has been studied in literature under various assumptions for symbol-synchronous transmission.
Salman A. Khan, Jan Bajcsy
doaj   +1 more source

N-DCF: MAC overhead reduction using narrow channel contention in wireless networks

EURASIP Journal on Wireless Communications and Networking, 2018
This paper presents a medium access control protocol for wireless networks that improves system spectral efficiency using multiple channels. Use of multiple narrow channels has already been proposed as a solution to reduce MAC overhead, but merely ...
Jungmin So, Ayinebyona Eliab
doaj   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez, Anna Felip‐Badia, Marina Caballero‐Bellon, Nazaret Sanchez‐Sierra, Alicia Castañeda, Moira Garraus, Maite Gorostegui, Margarida Simão‐Rafael, Juan Pablo Muñoz, Marta Perez‐Somarriba, Salvador Mañe, Mariana Cecilia Planells, Sara Perez‐Jaume, Jaume Mora   +13 more
wiley   +1 more source

Chip-Level Channel Equalization in WCDMA Downlink

EURASIP Journal on Advances in Signal Processing, 2002
The most important third generation (3G) cellular communications standard is based on wideband CDMA (WCDMA). Receivers based on TDMA style channel equalization at the chip level have been proposed for a WCDMA downlink employing long spreading sequences ...
Heikkilä Markku J, Komulainen Petri, Lilleberg Jorma, Hooli Kari, Juntti Markku, Latva-aho Matti   +5 more
doaj   +1 more source

Random access and source-channel coding error exponents for Multiple Access Channels [PDF]

2013 IEEE International Symposium on Information Theory, 2013
Comment: This paper is submitted to IEEE transactions on information theory. It was presented in part at ISIT2013 (IEEE International Symposium on Information Theory, Istanbul)
Farkas, Lóránt, Kói, Tamás
openaire   +3 more sources

Characterizing Parental Concerns About Lasting Impacts of Treatment in Children With B‐Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background B‐acute lymphoblastic leukemia (B‐ALL) is the most common pediatric cancer, and while most children in high‐resource settings are cured, therapy carries risks for long‐term toxicities. Understanding parents’ concerns about these late effects is essential to guide anticipatory support and inform evolving therapeutic approaches ...
Kellee N. Parker, Sarah W. Alexander, Lisa M. Jacola, Kimberly A. Buff, Kyobin Hwang, Elham Hashemi, Gregory Stoddard, Lindsay A. Jibb   +7 more
wiley   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Source-channel coding for the multiple-access relay channel [PDF]

2011 8th International Symposium on Wireless Communication Systems, 2011
This work considers reliable transmission of general correlated sources over the multiple-access relay channel (MARC) and the multiple-access broadcast relay channel (MABRC). In MARCs only the destination is interested in a reconstruction of the sources, while in MABRCs both the relay and the destination want to reconstruct the sources.
Murin, Yonathan, Dabora, Ron, Gündüz, Deniz   +2 more
openaire   +2 more sources