Improved Frequency Sweep Keying CDMA Using Faster R-CNN for Extended Ultrasonic Crosstalk Reduction. [PDF]
Sensors (Basel), 2023 Park GR, Park SH, Baek KR.
europepmc +1 more source
The comparison of time division multiple access (TDMA) (global system for mobile communication, GSM) and wideband-code division multiple access (W-CDMA) (third generation, 3G) system based on their modulation techniques [PDF]
, 2014 Olamide O. Olusanya, Abiodun Ogunseye
openalex +1 more source
, 2005 In this paper we investigate the achievable capacity of a UTRA-like Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system employing Loosely Synchronized (LS) spreading codes. The family of operational CDMA systems is interference limited,
Hanzo, L., Hua, W., Ni, S.
core
CDMA Transmission with Complex OFDM/OQAM
EURASIP Journal on Wireless Communications and Networking, 2008 We propose an alternative to the well-known multicarrier code-division multiple access (MC-CDMA) technique for downlink transmission by replacing the conventional cyclic-prefix orthogonal frequency division multiplexing (OFDM) modulation by an advanced ...
Lélé Chrislin +3 more
doaj
Comparison of FDMA and CDMA for second generation land-mobile satellite communications [PDF]
Code Division Multiple Access (CDMA) and Frequency Division Multiple Access (FDMA) (both analog and digital) systems capacities are compared on the basis of identical link availabilities and physical propagation models.
Lyons, R. G. +2 more
core +1 more source
Ant-colony-based multiuser detection for multifunctional-antenna-array-assisted MC DS-CDMA systems
, 2008 A novel Ant Colony Optimization (ACO) based Multi-User Detector (MUD) is designed for the synchronous Multi-Functional Antenna Array (MFAA) assisted Multi-Carrier Direct-Sequence Code-Division Multiple-Access (MC DS-CDMA) uplink (UL), which supports both
Hanzo, L., Hu, B., Xu, C., Yang, L-L.
core +1 more source
Symbol and Bit Error Rates Analysis of Hybrid PIM-CDMA
EURASIP Journal on Wireless Communications and Networking, 2005 A hybrid pulse interval modulation code-division multiple-access (hPIM-CDMA) scheme employing the strict optical orthogonal code (SOCC) with unity and auto- and cross-correlation constraints for indoor optical wireless communications is proposed. In this
Ghassemlooy Z., See C. K.
doaj +1 more source
Advanced multiple access concepts in mobile satellite systems [PDF]
Some multiple access strategies for Mobile Satellite Systems (MSS) are discussed. These strategies were investigated in the context of three separate studies conducted for the International Maritime Satellite Organization (INMARSAT) and the European ...
Ananasso, Fulvio
core +1 more source
Watermarking Using Decimal Sequences
, 2005 This paper introduces the use of decimal sequences in a code division multiple access (CDMA) based watermarking system to hide information for authentication in black and white images.
Kak, Subhash, Mandhani, Navneet
core +2 more sources
An Efficient Code-Timing Estimator for DS-CDMA Systems over Resolvable Multipath Channels
EURASIP Journal on Advances in Signal Processing, 2005 We consider the problem of training-based code-timing estimation for the asynchronous direct-sequence code-division multiple-access (DS-CDMA) system. We propose a modified large-sample maximum-likelihood (MLSML) estimator that can be used for the code ...
Li Jian, Liu Jianhua
doaj +1 more source