Results 1 to 10 of about 1,030,149 (344)

Design of spread spectrum communication system based on multipath signal synthesis [PDF]

open access: goldElectronics Letters, 2023
A low‐complexity anti‐multipath interference spread spectrum communication system is proposed to address shortcomings in traditional anti‐multipath technology, such as complex structures and high resource consumption.
Guo Xiaoxu   +5 more
doaj   +2 more sources

Direct-sequence spread spectrum system [PDF]

open access: greenProceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991, 2002
The authors discuss the construction and evaluation of the performance of a direct-sequence spread spectrum (DSSS) system. The system uses a special type of injection-locked oscillator called a synchronous oscillator for code synchronization. The DSSS system was constructed in a manner that provides a test-bed for demonstrating SS principles and allows
J.P. Stephens, D.M. Norman
openaire   +3 more sources

Efficient Implementation of Serial Search Synchronization Sub - system for Direct Sequence Spread Spectrum System Using FPGA [PDF]

open access: diamondEngineering and Technology Journal, 2005
: A complete synchronization detection sub - system for direct sequence spread spectrum ( DS / SS ) system has been designed and implemented using Xilinx - Virtex Field Programmable Gate Array ( FPGA ) device .
Waleed AL - Jauhar, Hikmat Abdullah
doaj   +2 more sources

A Chaos-Based Secure Direct-Sequence/Spread-Spectrum Communication System [PDF]

open access: goldAbstract and Applied Analysis, 2013
This paper proposes a chaos-based secure direct-sequence/spread-spectrum (DS/SS) communication system which is based on a novel combination of the conventional DS/SS and chaos techniques.
Nguyen Xuan Quyen   +2 more
doaj   +2 more sources

Spectrum Sharing in an ISM Band: Outage Performance of a Hybrid DS/FH Spread Spectrum System with Beamforming [PDF]

open access: goldEURASIP Journal on Advances in Signal Processing, 2009
This paper investigates spectrum sharing issues in the unlicensed industrial, scientific, and medical (ISM) bands. It presents a radio frequency measurement setup and measurement results in 2.4 GHz.
Hanyu Li   +3 more
doaj   +2 more sources

Performance of Spread Spectrum Based Multi-Carrier System in Underwater Communication Using Transmitter Pre-Processing

open access: goldIEEE Access, 2016
In this paper, we evaluate the bit-error-rate (BER) performance of a turbo-coded, transmitter pre-processing-assisted spread spectrum technology-based multi-carrier (MC) system for the acoustic information transmission in underwater communication.
Nelson Iruthayanathan   +2 more
doaj   +2 more sources

Nonorthogonal CSK/SS ALOHA system under MANET environment

open access: yesICT Express, 2021
Spread ALOHA systems that combine the spread spectrum techniques with the ALOHA system (a simple random access protocol without carrier sensing function) have been investigated as Mobile Ad-hoc Network (MANET) protocols. This paper presents the effect of
Nobuyoshi Komuro, Hiromasa Habuchi
doaj   +1 more source

Multi-User Secure Receiving Algorithm Based on Blind Recovery in MIMO Network

open access: yesIEEE Access, 2021
In order to optimize the performance of data transmission in multiple input multiple output (MIMO) wireless communication systems, a spread spectrum self-interference system based on channel inverse matrix modulation is proposed.
Yongli An   +3 more
doaj   +1 more source

A chaotic spread spectrum system for underwater acoustic communication [PDF]

open access: yes, 2017
The work is supported in part by NSFC (Grant no.
Bai, Chao   +4 more
core   +1 more source

A class of fractional-order hyperchaotic system and its application in spread spectrum communication

open access: yes工程科学学报, 2015
A class of fractional-order hyperchaotic system is introduced and its basic dynamical properties are investigated by means of theoretical analysis and numerical simulation.
ZHANG Xiao-dan, WANG Qi-li
doaj   +1 more source

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