Results 141 to 150 of about 6,448 (211)

Spreading Sequence Blind Estimation in DSSS System Using Gradient Ascent Method

International Telecommunication Networks and Applications Conference, 2023
In direct sequence spread spectrum systems, a receiver must know the spreading code to despread a signal. In non-cooperative contexts, there is no prior information about the spreading code, and it must be blindly estimated.
Yooncheol Choi, Dongyeong Kim, Mingyu Jang, Dongweon Yoon   +3 more
semanticscholar   +1 more source

Novel Algorithm for Blind Estimation of Scramblers in DSSS Systems

IEEE Transactions on Information Forensics and Security, 2023
In this paper, we propose a novel algorithm for blind estimation of a linear scrambler, which is a synchronous scrambler or a self-synchronous scrambler, in direct sequence spread spectrum systems and analyze its estimation performance.
Dongyeong Kim, D. Yoon
semanticscholar   +1 more source

Incremental-data stealth-transmission method in DSSS

Wireless Networks, 2021
A direct-sequence spread-spectrum (DSSS) signal has many advantages, such as low SNR and strong anti-jamming ability; thus, it is widely used in various military and civil communication systems. However, hiding and high-data-rate transmission technologies have become the key factors affecting the future applications of the existing DSSS. To solve these
Fang Liu 0004, Jian Liu, Yongxin Feng
openaire   +1 more source

Turbo Iterative DSSS Acquisition in Satellite High-Mobility Communications

IEEE Transactions on Vehicular Technology, 2021
Satellite high-mobility communications can provide global communication services for mobile terminals, which plays a vital role in today's world of wireless communications.
Jiawei Wang, Chunxiao Jiang, Linling Kuang   +2 more
semanticscholar   +1 more source

DSSS with FPGA

2007 IEEE 15th Signal Processing and Communications Applications, 2007
In this paper, we present the implementation of Direct Sequence Spread Spectrum (DSSS) on Field Programmable Gate Array (FPGA) using one of the hardware definition languages ,Very High Speed Circuit Hardware Description Language (VHDL).AIgorithms are implemented on 3s100 evg100-4 device, belonging to Xlinx FPGA family.These systems are used in mobile ...
Ilker, Ethem Okan, Dikmese, Sener, Dincer, Hasan   +2 more
openaire   +2 more sources

Impairments-aware time slot allocation model for energy-constrained multi-hop clustered IoT nodes considering TDMA and DSSS MAC protocols

Journal of Industrial Information Integration, 2021
The possibility of Internet of Things (IoT) is that a large number of live items (e.g., apparatuses) in the network are available, detected, and interconnected.
Khalid A. Darabkh, Jumana N. Zomot, Z. Al-qudah, A. Khalifeh   +3 more
semanticscholar   +1 more source

Two-Dimensional Information Transmission Method in DSSS

Wireless Personal Communications, 2021
In this paper, a two-dimensional information transmission method based on k step-complex spread spectrum (KS-CSS) is proposed. The aim is to solve the contradiction between the bandwidth and processing gain of a traditional direct-sequence spread spectrum (DSSS) channel, and to achieve better system performance (such as by obtaining higher processing ...
Fang Liu 0004, Mowen Cheng, Yongxin Feng
openaire   +1 more source

An Improved PMF-FFT Acquisition Approach Based on Frequency Segmentation for DSSS Signals

2021 IEEE 5th Information Technology,Networking,Electronic and Automation Control Conference (ITNEC), 2021
With an environment of low signal-to-noise ratio and large frequency deviation, in order to meet the requirement of output signal-to-noise ratio, the acquisition of direct sequence spread spectrum signals (DSSS) requires a long accumulation time, but the
Zhiwei Lu, Yudi Chen, Yiwen Jiao, Kuanfei Sun   +3 more
semanticscholar   +1 more source

A DSSS Receiver for Dual-Mode DSSS/OFDM Wireless LAN Systems

2005 IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2006
This paper introduces a DSSS baseband receiver suitable for a dual mode DSSS/OFDM wireless LAN system. Packet synchroniser with a pair of ADCs with dynamic sampling is used for detecting both DSSS and OFDM packets. For differentially encoded symbols, frequency offset and phase offset can be compensated based on their inherent characteristics.
null Frank H. Hsiao, null Jin-Hwa Guo, null Shih-Lin Lo, null Terng-Yin Hsu   +3 more
openaire   +1 more source

Performance of DSSS against Repeater Jamming

2006 13th IEEE International Conference on Electronics, Circuits and Systems, 2006
Direct sequence spread spectrum (DSSS) technique has been widely used in both military communications and commercial communications. The normal jamming types, including broadband noise, partial-band noise and so on, are ineffective at the current jamming power level when the processing gain is large enough.
Hang Wang, Zanji Wang, Jingbo Guo
openaire   +1 more source