Results 21 to 30 of about 122,557 (242)
ENHANCEMENT OF CODE DIVISION MULTIPLE ACCESS (CDMA) WITHIN THE GSM SYSTEM IN IRAQ
Mağallaẗ Al-kūfaẗ Al-handasiyyaẗDespite the widespread adoption of Global System for Mobile Communications (GSM) in Iraq, the network's capacity and performance limitations have become increasingly apparent, particularly in urban areas with high user density. Currently, LTE (4G) is the
Nabil Abdulwahab Abdulrazaq Baban
doaj +1 more source
Transmission of non-linear binary input functions over a CDMA System
, 2012 We study the problem of transmission of binary input non-linear functions over a network of mobiles based on CDMA. Motivation for this study comes from the application of using cheap measurement devices installed on personal cell-phones to monitor ...
Aghaeinia, Hassan +2 more
core +1 more source
Adaptive schemes for packet data in a ds-cdma environment [PDF]
, 1997 This paper presents a novel adaptive DS-CDMA slotted-ALOHA packet random access scheme for improving the throughput of the conventional DS-CDMA slotted-ALOHA system.
Agustí Comes, Ramon +1 more
core +1 more source
Journal of Information Security, 2014 We present a secure LAN using sound as the physical layer for low speed applications. In particular, we show a real implementation of a point-to-point or point-to-multipoint secure acoustic network, having a short range, consuming a negligible amount of power, and requiring no specific hardware on mobile clients.
Ortega, Alfredo A. +3 more
openaire +3 more sources
LAS-CDMA using Various Time Domain Chip-Waveforms
, 2005 LAS CDMA exhibits a significantly better performance than that of classic random code based DS-CDMA, when operating in a quasi-synchronous scenario. Classic frequency-domain raised cosine Nyquist filtering is known to show the best possible performance ...
Hanzo, L., Wei, H.
core +1 more source
Analytical BER Performance of DS-CDMA Ad Hoc Networks using Large Area Synchronized Spreading Codes
, 2005 The family of operational CDMA systems is interference-limited owing to the Inter Symbol Interference (ISI) and the Multiple Access Interference (MAI) encountered.
Hanzo, L., Hua, W., Liu, X.
core +1 more source
New Difference Triangle Sets by a Field‐Programmable Gate Array‐Based Search Technique
Journal of Combinatorial Designs, Volume 34, Issue 1, Page 37-50, January 2026.ABSTRACT We provide some difference triangle sets with scopes that improve upon the best known values. These are found with purpose‐built digital circuits realized with field‐programmable gate arrays (FPGAs) rather than software algorithms running on general‐purpose processors.
Mohannad Shehadeh +2 more
wiley +1 more source
Análise da Performance da Técnica MC/MC-CDMA
Trends in Computational and Applied Mathematics, 2007 A técnica Multi Portadora / Multi Código CDMA (MC/MC-CDMA) é analisada através de uma comparação do desempenho entre as técnicas Multi Código CDMA e Multi Portadora CDMA.
A.S. Araújo, G.A. Carrijo, E.L. Flores
doaj +1 more source
Non-Coherent Code Acquisition in the Multiple Transmit/Multiple Receive Antenna Aided Single- and Multi-Carrier DS-CDMA Downlink [PDF]
, 2007 We analyse the characteristics of the Non-Coherent (NC) Multiple Transmit/Multiple Receive (MTMR) antenna aided Multi-Carrier (MC) DS-CDMA downlink employing a serial search based acquisition scheme, when communicating over spatially uncorrelated ...
Hanzo, L, Won, SH
core +1 more source
The Journal of Engineering, Volume 2026, Issue 1, January/December 2026.ABSTRACT Smart cities represent transformative urban ecosystems, leveraging advanced technologies to address challenges posed by rapid urbanisation, energy efficiency demands, and sustainability goals. Despite extensive research, a comprehensive and integrated literature analysis combining AI‐based communication, energy management, cybersecurity, and ...
Maaz Tahir Malik +5 more
wiley +1 more source