Results 211 to 220 of about 89,966 (235)
Some of the next articles are maybe not open access.
PCN: son of cellular? The challenges of providing PCN service
IEEE Communications Magazine, 1991The engineering and marketing problems posed by personal communications networks (PCNs) are examined. The characteristics common to all PCNs are identified, emphasizing their use of small-coverage cells (microcells). Trials undertaken by the Bell Atlantic telephone companies are discussed. >
openaire +1 more source
IEE Colloquium on Roaming with Data, 1995
Personal communication networks (PCNs) are already operating in the UK and a few other countries, and new PCNs are planned for commencement of service during the next two or three years in several countries around the world. These networks operate according to the DCS-1800 standard developed by ETSI members.
openaire +1 more source
Personal communication networks (PCNs) are already operating in the UK and a few other countries, and new PCNs are planned for commencement of service during the next two or three years in several countries around the world. These networks operate according to the DCS-1800 standard developed by ETSI members.
openaire +1 more source
IEEE Communications Magazine, 1992
The interference levels that may be expected for a range of conventional cellular and microcellular clusters used in personal communication networks (PCNs) and personal communication systems (PCSs) are discussed. Simulation results show that for conventional size cells, 32- and 64-level quadrature amplitude modulation (QAM) schemes are preferred for ...
openaire +1 more source
The interference levels that may be expected for a range of conventional cellular and microcellular clusters used in personal communication networks (PCNs) and personal communication systems (PCSs) are discussed. Simulation results show that for conventional size cells, 32- and 64-level quadrature amplitude modulation (QAM) schemes are preferred for ...
openaire +1 more source
GLOBECOM 97. IEEE Global Telecommunications Conference. Conference Record, 2002
A WDM-based PCN architecture is proposed. Based on the broadcast nature of WDM star couplers, this WDM-based architecture gains several advantages over the current prominent ATM-based PCN architecture: (1) a fast hand-off scheme for roaming terminals, (2) an easy multicast routing implementation for mobile environment, and (3) a less number of ...
null Nen-Fu Huang, null Rui-Chi Wang
openaire +2 more sources
A WDM-based PCN architecture is proposed. Based on the broadcast nature of WDM star couplers, this WDM-based architecture gains several advantages over the current prominent ATM-based PCN architecture: (1) a fast hand-off scheme for roaming terminals, (2) an easy multicast routing implementation for mobile environment, and (3) a less number of ...
null Nen-Fu Huang, null Rui-Chi Wang
openaire +2 more sources
Phosphanyl Cyanophosphide Salts: Versatile PCN Building Blocks
Angewandte Chemie International Edition, 2019AbstractThe facile preparation of alkali salts of phosphanyl cyanophosphides [NHP‐PCN]− (NHP=N‐heterocyclic phosphenium) is reported. Their formation is achieved by isoelectronic replacement of O for [N]− in the phosphaketenes NHP‐PCO using alkaline hexamethyldisilazide M[N(SiMe3)2] (M=Na, K) as reagent.
Zhongshu Li +5 more
openaire +4 more sources
PCNs left out of the reckoning
Nursing Standard, 1994Nursing staff shortages are preventing sick children from getting care at home, a conference session heard.
openaire +2 more sources
Zukünftige Mobilfunkkonzepte (DECT, PCN, UMTS)
1993In diesem Kapitel werden die drei wichtigsten zukunftigen Entwicklungen DECT, PCN und UMTS kurz vorgestellt.
Reinhold Eberhardt, Walter Franz
openaire +1 more source
Leaping from the barricades (PCN)
IEEE Communications Magazine, 1992Following extensive discussion between the US Federal Communications Commission (FCC) and private industry on competing personal communication system (PCS) technologies and regulatory policies, the FCC took a concrete step to address, in a notice of proposed rulemaking released in February 1992, the most critical issue to PCS development: spectrum ...
openaire +1 more source
PCN: the probabilistic convergent network
Proceedings of ICNN'95 - International Conference on Neural Networks, 2002A new architecture for networks constructed from RAM-based neurons is presented which, whilst retaining learning and generalisation properties possessed by existing RAM-based network architectures, allows for a regular treatment of specialisation and generalisation with the additional property of providing information regarding the relative probability
G. Howells, M.C. Fairhurst, D.L. Bisset
openaire +1 more source
Proceso de Comunidades Negras (PCN)
2008The thesis is written from a post-developmental perspective and attempts to determine if Proceso de Comunidades Negras (PCN) can be considered an embodiment of post-developmental ideas, as many scholars who study and analyzed this social movement attest. The thesis has two theoretical poles.
openaire +1 more source