Results 21 to 30 of about 23,651 (213)
A generic radio channel emulator to evaluate higher layer protocols in a CDMA system [PDF]
, 2000 Currently, we are involved in the standardisation process to specify the next mobile system generation. A wideband code division multiple access (WCDMA) system is considered in most of the region versions.
Díaz Romero, M. del Pilar +1 more
core +1 more source
A Complementary Code-CDMA-Based MAC Protocol for UWB WPAN System
EURASIP Journal on Wireless Communications and Networking, 2005 We propose a new multiple access control (MAC) protocol based on complementary code-code division multiple access (CC-CDMA) technology to resolve collisions among access-request packets in an ultra-wideband wireless personal area network (UWB WPAN ...
Zhu Jiang, Fapojuwo Abraham O.
doaj +2 more sources
Optimal CDMA signature sequences, inverse eigenvalue problems and alternating minimization [PDF]
, 2003 This paper describes the matrix-theoretic ideas known as Welch-bound-equality sequences or unit-norm tight frames that are used to alternate minimizing the total squared correlation. This paper shows the construction of an optimal signature sequences for
Heath, Robert W., Jr. +2 more
core +2 more sources
, 2007 The network performance of a frequency division duplex and time division duplex (TDD) code division multiple access (CDMA)-based system is investigated using system parameters similar to those of the Universal Mobile Telecommunication System.
Blogh, J.S., Hanzo, L., Ni, S.
core +1 more source
An iterative frequency-domain decision-feedback receiver for MC-CDMA schemes [PDF]
, 2005 The MC-CDMA techniques (multicarrier code division multiple access) combine a CDMA scheme with OFDM modulation (orthogonal frequency division multiplexing), so as to allow high transmission rates over severely time-dispersive channels without the need of
Dinis, Rui +2 more
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
Multiuser cyclic shift keying spread spectrum underwater acoustic communication
Tongxin xuebao, 2017 Aiming at the problem of low data rate and high receiver complexity of existing direct sequence spread spectrum code division multiple access (DS-CDMA),a novel code division multiple access (CDMA) using cyclic shift keying (CSK) signaling,namely CSK-CDMA,
Cheng-bing HE +6 more
doaj +2 more sources
Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver
Laser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley +1 more source
IMPROVED EXPRESSION FOR THE AVERAGE BEP OF MC-CDMA SYSTEMS WITH MRC DIVERSITY RECEPTION
Electrica, 2010 Multi-carrier code division multiple access (MC-CDMA) which is a combination of multicarrier modulation and code division multiple access has gained wide acceptance in recent works because of its many advanced features.
Ibrahim DEVELI
doaj +2 more sources
Cdma blind channel equalization: a weighted subsface a proach [PDF]
, 1999 This paper considers the problem of blind demodulation of multiuser information symbols in a direct-sequence code-division multiple access (DS-CDMA) environment. Channel estimation and symbol detection in the presence of both multiple access interference
Cabrera-Bean, Margarita +1 more
core +1 more source