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СРАВНИТЕЛЬНЫЙ АНАЛИЗ РАЗЛИЧНЫХ ТЕХНОЛОГИЙ РАДИОТЕЛЕФОННОЙ СВЯЗИ DECT, GSM, CDMA
Cifra: Информационные технологии и телекоммуникацииВ данной статье проведен сравнительный анализ трех основных технологий радиотелефонной связи: DECT, GSM и CDMA. Каждая из этих технологий имеет свои уникальные особенности, области применения и происточные преимущества и недостатки.
Галыгин С.С. +2 more
doaj +1 more source
, 2006 There has been a recent upsurge of interest in applying Code Division Multiple Access (CDMA) techniques to optical networks. Conventional spreading codes for OCDMA, known as optical orthogonal codes (OOC) spread the signal in the time domain only, which often results in the requirement of a large chip rate.
Omrani, Reza, Kumar, Vijay P
openaire +2 more sources
A Unified Approach to the Analysis of Multicarrier DS-CDMA over Nakagami-$M$ Fading Channels [PDF]
, 2001 A class of unified multicarrier DS-CDMA (MC DS-CDMA) schemes is defined and its performance is considered over multipath Nakagami-$M$ fading channels. The spacing between two adjacent subcarriers of the unified MC DS-CDMA scheme is a variable, allowing ...
Yang, L-L., Hanzo, L.
core
Multi-Functional Antenna Array Assisted MC DS-CDMA Using Downlink Preprocessing Based on Singular Value Decomposition [PDF]
, 2007 In this contribution we propose and investigate a transmitter preprocessing scheme designed for downlink transmission in multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) systems using multiple base-station antenna arrays, where ...
Xu, C. +7 more
core +1 more source
Bit Error Rate pada Sistem MIMO MC-CDMA dengan Teknik Alamouti-STBC
Techne, 2017 Pada makalah ini dilaporkan hasil penelitian sistem MIMO MC-CDMA dengan teknik Alamouti Space Time Block Code (STBC) menggunakan dua antena pengirim dan dua antena penerima. Kinerja sistem diukur dengan nilai Bit Error Rate (BER).
Sekar Harlen +2 more
doaj +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
Turbo-coded CDMA-based two-way relaying [PDF]
, 2012 In this contribution, we have studied the performance of a Turbo-Coded (TC) Code Division Multiple Access (CDMA) based two-way relaying scheme. More explicitly, we employ a seven-user CDMA model, where two of the CDMA users are communicating with each ...
Liao, Sha Sha, Ng, Soon Xin
core
Redundant Residue Number System Based Multicarrier DS-CDMA for Dynamic Multiple-Access in Cognitive Radios [PDF]
, 2011 Redundant residue number system (RRNS)-based multicarrier DS-CDMA (MC/DS-CDMA) is proposed for dynamic multiple-access (DMA) in cognitive radios (CRs).
Shuo Zhang +5 more
core +1 more source
4G: Expectativas, Aplicaciones y Retos Existentes en su Implementación
Prisma Tecnológico, 2016 Cada vez son mayores los requerimientos de los sistemas inalámbricos por la creciente necesidad de información diversa por parte de los usuarios. Nos encontramos actualmente en le punto de transición entre una generación de tecnología y otra. Y si bien
Francisco Tello
doaj
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