Results 91 to 100 of about 7,178 (195)

Adaptive Subchannel Allocation For Mc-Cdma System

open access: yes, 2007
Multicarrier code-division multiple-access is one of the effective techniques to gain its multiple access capability, robustness against fading, and to mitigate the ISI. In this paper, we propose an improved mulcarrier CDMA system with adaptive subchannel allocation.
Cuiran Li, Jianli Xie, Chengshu Li
openaire   +1 more source

Joint Impact of Frequency Synchronization Errors and Intermodulation Distortion on the Performance of Multicarrier DS-CDMA Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
The performance of multicarrier systems is highly impaired by intercarrier interference (ICI) due to frequency synchronization errors at the receiver and by intermodulation distortion (IMD) introduced by a nonlinear amplifier (NLA) at the transmitter ...
Rugini Luca, Banelli Paolo
doaj   +1 more source

BER Performance for Downlink MC-CDMA Systems over Rician Fading Channels

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We consider downlink multicarrier code-division multiple-access (MC-CDMA) systems using binary phase-shift keying (BPSK) modulation scheme and maximal ratio combining (MRC) in frequency-selective Rician fading channels. A time-domain method to obtain bit
Vimal K. Dubey, Zhihua Hou
doaj   +1 more source

Impact of reformed RM Encoded data on PAPR of Multicode CDMA under MSK

open access: yesSir Syed University Research Journal of Engineering and Technology, 2016
In this research work, the effect of Reformed Reed Muller Encoded Data (RRMED) on Peak to Average Power Ratio (PAPR) of Multicode Code Division Multiple Access (MC-CDMA) systems was studied under Minimum Shift Keying (MSK) modulation. Simulation studies
S. Rizwan-ul- Hasan   +2 more
doaj  

Acquisition performance study of single- and multi-carrier DS-CDMA over Nakagami-m fading channels

open access: yes, 2001
In this contribution we investigate and compare the initial acquisition performance of single- and multi-carrier DS-CDMA systems over multipath Nakagami-m fading channels under the hypothesis of multiple synchronous states in the uncertainty region of ...
Hanzo, L., Yang, L-L.
core  

Performance Evaluation of MC DS CDMA using Wireless Open Access Research Platform

open access: yesJAREE (Journal on Advanced Research in Electrical Engineering), 2018
The need for reliable wireless communication systems has become an issue of communication technology development in the modern era. Multi Carrier Direct Sequence Code Division Multiple Access (MC-DS-CDMA) communication system offers superiority in ...
Suwadi Suwadi   +4 more
doaj  

Large Families of Ternary Sequences with Aperiodic Zero Correlation Zone Sequences for a Multi-Carrier DS-CDMA System [PDF]

open access: yes, 2002
A new method for generating families of ternary spreading sequences is presented. The sequences have aperiodic zero correlation zones and large families are created for a specific sequence length.
Donelan, H., O'Farrell, T.
core  

SGD Frequency-Domain Space-Frequency Semiblind Multiuser Receiver with an Adaptive Optimal Mixing Parameter [PDF]

open access: yes, 2013
A novel stochastic gradient descent frequency-domain (FD) space-frequency (SF) semiblind multiuser receiver with an adaptive optimal mixing parameter is proposed to improve performance of FD semiblind multiuser receivers with a fixed mixing parameters ...
Phrompichai, S.
core   +1 more source

Coherent and Differential Downlink Space-Time Steering Aided Generalised Multicarrier DS-CDMA

open access: yes, 2007
This paper presents a generalised MultiCarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink.
El-Hajjar, Mohammed   +3 more
core   +1 more source

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