Results 91 to 100 of about 23,563 (255)

Dynamical replica theoretic analysis of CDMA detection dynamics

open access: yes, 2005
We investigate the detection dynamics of the Gibbs sampler for code-division multiple access (CDMA) multiuser detection. Our approach is based upon dynamical replica theory which allows an analytic approximation to the dynamics.
Coolen A C C   +10 more
core   +1 more source

The Kalman Filtering Blind Adaptive Multi-user Detector Based on Tracking Algorithm of Signal Subspace

open access: yesInformation, 2015
Multi-user detection is an effective method to reduce multiple access interference in code division multiple access (CDMA) systems. This paper discusses a signal subspace based blind adaptive multiuser detector and a Kalman filtering blind adaptive ...
Liqing Zhou   +5 more
doaj   +1 more source

FREQUENCY DOMAIN EQUALIZATION TECHNIQUES FOR MULTICODE DS-CDMA IN FREQUENCY SELECTIVE RAYLEIGH FADING CHANNEL

open access: yesJournal of Engineering, 2010
Orthogonal multicode direct sequence code division multiple access (DS-CDMA) has the flexibility in offering high data rate services. However, in a frequency-selective fading channel, the bit error rate (BER) performance is severely degraded since the ...
Maha George Zia, Sameer Akram Dawood
doaj   +1 more source

Why is CDMA the solution for mobile satellite communication [PDF]

open access: yes
It is demonstrated that spread spectrum Code Division Multiple Access (CDMA) systems provide an economically superior solution to satellite mobile communications by increasing the system maximum capacity with respect to single channel per carrier ...
Gilhousen, Klein S.   +3 more
core   +1 more source

Spectral-amplitude encoding CDMA system based on high-speed electronic encoder/ decoder structures

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2016
A new method for high-speed Code Division Multiple Access (CDMA) systems that lies on the analogue performance of distributed-based transversal filters is proposed.
Jorge Aguilar-Torrentera   +3 more
doaj   +1 more source

System level comparison of FDMA vs. CDMA (under conference guideline constraint) [PDF]

open access: yes
The margin that is required to mitigate the near-far problem in a Code Division Multiple Access (CDMA) mobile satellite system is determined by the radio-propagation model selected, the distribution of the users in clear and shadowed environments, and ...
Renshaw, Ken
core   +1 more source

High performance mixed optical CDMA system using ZCC code and multiband OFDM

open access: yesEPJ Web of Conferences, 2017
In this paper, we have proposed a high performance network design, which is based on mixed optical Code Division Multiple Access (CDMA) system using Zero Cross Correlation (ZCC) code and multiband Orthogonal Frequency Division Multiplexing (OFDM) called ...
Nawawi N. M.   +3 more
doaj   +1 more source

Compensation of Fading Channels Using Partial Combining Equalizer in MC-CDMA Systems

open access: yesJournal of Telecommunications and Information Technology, 2017
In this paper the performance of a partial combining equalizer for Multi-Carrier Code Division Multiple Access (MC-CDMA) systems is analytically and numerically evaluated. In the part of channel identification, authors propose a blind algorithm based on
Mohammed Zidane   +2 more
doaj   +1 more source

Color-Shift Keying and Code-Division Multiple-Access Transmission for RGB-LED Visible Light Communications Using Mobile Phone Camera

open access: yesIEEE 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, Chi-Wai Chow
doaj   +1 more source

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