Results 81 to 90 of about 2,093,139 (198)

CDMA/OTFS Sensing Outperforms Pure OTFS at the Same Communication Throughput

IEEE Open Journal of Vehicular Technology
There is a dearth of publications on the subject of spreading-aided Orthogonal Time Frequency Space (OTFS) solutions, especially for Integrated Sensing and Communication (ISAC), even though Code Division Multiple Access (CDMA) assisted multi-user OTFS ...
Hugo Hawkins, Chao Xu, Lie-Liang Yang, Lajos Hanzo   +3 more
doaj   +1 more source

WCDMA in Malaysia [PDF]

, 2008
Wideband Code Division Multiple Access (WCDMA) A 3G highspeed digital data service provided by cellular carriers that use the time division multiplexing (TDMA) or GSM technology worldwide, including AT&T (formerly Cingular) and T-Mobile in the U.S. WCDMA
Mawari, Hamzah, Mohamad, Alias
core  

Use of Time-Frequency Analysis and Neural Networks for Mode Identification in a Wireless Software-Defined Radio Approach

EURASIP Journal on Advances in Signal Processing, 2004
The use of time-frequency distributions is proposed as a nonlinear signal processing technique that is combined with a pattern recognition approach to identify superimposed transmission modes in a reconfigurable wireless terminal based on software ...
Matteo Gandetto, Marco Guainazzo, Carlo S. Regazzoni   +2 more
doaj   +1 more source

Link Budget Analysis for Enhancing IoT Performance over Satellite Networks

Algerian Journal of Signals and Systems
The Internet of Things (IoT) has revolutionized various industries, and satellite communication has emerged as a promising solution to extend IoT connectivity to remote and underserved areas. However, ensuring reliable and efficient IoT performance over
Youcef BENABDELLAH
doaj   +1 more source

Partially Overlapping NOMA System with Many Neighboring Channels

Journal of Communications Software and Systems
The increasing usage of the Internet of Things (IoT) and other modern massive machine-type communication applications has led to a growing demand for more efficient u tilization o f a vailable c ommunication bandwidth.
Zoltán Belso, László Pap
doaj   +1 more source

Faster and Efficient Time Division Multiple Access (TDMA) System

International Journal of Advanced Research in Computer Science and Software Engineering, 2018
In this paper the author has developed a new design to implement the TDMA(Time division multiple access) system. It is a verilog code that is simulated on the “Mentor graphics MODEL SIM- ALTERA 10.1d(QUARTUS II 13.0) “ software. It allows several users to share the same frequency channel by dividing the signal into different time slots.
openaire   +1 more source

Multi‑channel Distributed STDMA Slot Scheduling Method Based on Directional Antenna

Nanjing Hangkong Hangtian Daxue Xuebao
To address the issues of low transmission rate， high transmission delay， and difficulty in ensuring multi‑service quality of service （QoS） in transoceanic aeronautical ad‑hoc networks（AANET） with single‑channel space-time division multiple access （STDMA）
LIU Haitao, ZHENG Chen, ZENG Maoshu
doaj   +1 more source

Multichannel demultiplexer/demodulator technologies for future satellite communication systems [PDF]

NASA-Lewis' Space Electronics Div. supports ongoing research in advanced satellite communication architectures, onboard processing, and technology development.
Abramovitz, Irwin, Budinger, James M., Courtois, Hector A., Ivancic, William D., Staples, Edward J.   +4 more
core   +1 more source

Destination-directed, packet-switching architecture for 30/20-GHz FDMA/TDM geostationary communications satellite network [PDF]

A destination-directed packet switching architecture for a 30/20-GHz frequency division multiple access/time division multiplexed (FDMA/TDM) geostationary satellite communications network is discussed. Critical subsystems and problem areas are identified
Ivancic, William D., Shalkhauser, Mary JO   +1 more
core   +1 more source

Characterization of two MMIC GaAs switch matrices at microwave frequencies [PDF]

Monolithic GaAs microwave switch matrices for use in satellite switched, time division multiple access communication systems were developed. Two monolithic GaAs MESFET switch matrices were fabricated; one for switching operation at intermediate ...
Fujikawa, Gene
core   +1 more source