Results 31 to 40 of about 244,698 (338)
Repeat accumulate code division multiple access and its hybrid detection
, 2008 In this paper, we propose the novel concept of Repeat Accumulate Code Division Multiple Access (RA-CDMA), which employs unique, user-specific channel code generator matrices (interleavers) for differentiating the users.
S. Chen +7 more
core +1 more source
Demonstration of a 64-chip OCDMA system using superstructured fiber gratings and time-gating detection [PDF]
, 2001 We investigate the benefits of using time-gating detection in an optical code-division multiple access (OCDMA) system that comprises bipolar 64-chip long superstructure fiber Bragg grating encoders and decoders. Transmission of the codes is demonstrated,
Teh, P.C. +6 more
core +1 more source
Implementation of Multiple Access Techniques Applicable for Maritime Satellite Communications [PDF]
TransNav, 2013 In this paper are introduced fundamentals, characteristics, advantages and disadvantages of Multiple Access (MA) employed as transmission techniques in the Maritime Mobile Satellite Communications (MMSC) between ships and Coast Earth Station (CES) via ...
Stojce Dimov Ilcev
doaj +1 more source
Journal of Telecommunications and Information Technology, 2023 A scheme of chaotic spreading sequence for multicarrier code division multiple access system (MC-CDMA) iproposed to estimate the transmission channel. This systespreads spectrum and identifies the channel, simultaneously.
Miloud Frikel +3 more
doaj +3 more sources
Convex optimization–based multi-user detection in underwater acoustic sensor networks
International Journal of Distributed Sensor Networks, 2018 Multi-carrier code-division multiple access is an important technical means for high-performance underwater acoustic sensor networks. Nevertheless, severe multiple access interference is a huge challenge.
Jianping Wang +4 more
doaj +1 more source
Orthogonal short codes for code division multiple access networks [PDF]
European Transactions on Telecommunications, 1996 AbstractShort codes are known to have better balance and spectral characteristics than their long counterparts. In this work we show by simulations that for certain users loads their bit error performance are excellent. A CDMA network performance is investigated under different load and fading situations.
Khalil Kanj +2 more
openaire +1 more source
Multiple Access Techniques for Bipolar Optical Code Division in Wireless Optical Communications
IEEE Access, 2020 In this paper, multiple access techniques for bipolar optical code division are proposed for application in wireless optical communications. First, several fiber Bragg gratings (FBGs) and optical circulators are used to encode optical signals.
Hsu-Chih Cheng +4 more
doaj +1 more source
IEEE Photonics Journal, 2014 Light-emitting diodes (LEDs) have been deployed for various applications in our daily lives. Similarly, image sensors or cameras integrated into mobile phones have become common. Hence, visible light communication (VLC) using LED and mobile phone cameras
Shih-Hao Chen, C. Chow
semanticscholar +1 more source
Multiple access based on three-stage modulation in multi-band OFDM-UWB system
Tongxin xuebao, 2007 According to the characteristics of multi-band orthogonal frequency-division multiplexing ultra-wideband（OFDM-UWB） system,a multiple access based on three-stage modulation（TSM-MA） was proposed.It combined multi-carrier code division multiple access（MC ...
BAO Zhi-hua +3 more
doaj +2 more sources
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo +5 more
wiley +1 more source