600 Hits in 4.8 sec

Analysis of Successive Interference Cancellation Scheme using OOC code in Optical CDMA Systems

Tawfig Eltaif, Hossam M. H. Shalaby, Sahbudin Shaari, Mohammad M. N. Hamarsheh
2008 International Conference on Advanced Communication Technology, ICACT  
Hence, much more number of users can be accommodated by SIC/DS receiver system.  ...  To overcome this problem, successive interference cancellation (SIC) scheme is applied to O-CDMA systems.  ...  We have proposed the successive interference cancellation (SIC) technique to suppress MAI in optical CDMA systems [5] .  ... 
doi:10.1109/icact.2008.4494184 fatcat:dh3w5sqqivehxo5a2utwwsc22i

Ad Hoc Networks: To Spread or Not to Spread? [Ad Hoc and Sensor Networks]

Jeffrey Andrews, Steven Weber, Martin Haenggi
2007 IEEE Communications Magazine  
Yang for their contributions to several of the ideas in this article.  ...  DS-CDMA can also benefit substantially from scheduling, as well as from sophisticated receivers that cancel co-channel interference.  ...  Interestingly, only DS-CDMA systems stand to benefit from most achievable multiuser detection techniques, since only interferers stronger than the desired signal can typically be cancelled.  ... 
doi:10.1109/mcom.2007.4395371 fatcat:liq2nkq3qvc3lffi52dixorw6q

Multiple Access Technologies for Beyond 3G Wireless Cellular Systems

R Sudheer Kumar
2013 IOSR Journal of Engineering  
In this paper, some fundamental technical concepts of the main multiple access schemes for wireless mobile systems are reviewed, and a path for development of appropriate multiple access technologies for  ...  Finally, we conclude the article by reviewing the most promising multiple access technologies for B3G mobile cellular systems.  ...  Multicarrier DS-CDMA (MC/DS-CDMA) scheme has received much attention as one promising MA scheme for B3G systems.  ... 
doi:10.9790/3021-03763745 fatcat:e37lvu2trndg5dudc4px7xxfvq

A tutorial on multiple access technologies for beyond 3G mobile networks

A. Jamalipour, T. Wada, T. Yamazato
2005 IEEE Communications Magazine  
Three typical CDMA-based MA schemes receiving attention in IMT-2000 are DS-CDMA, MC-CDMA, and time-division CDMA (TD-CDMA). nFigure 5 . 5 Interference cancellation factor.  ...  Multicarrier DS-CDMA (MC/DS-CDMA) scheme has received much attention as one promising MA scheme for B3G systems [11] .  ... 
doi:10.1109/mcom.2005.1391509 fatcat:cakaqemqznhubepwvoifzvy3qy

Guest editorial multiuser detection techniques with application to wired and wireless communications systems II

G. Cherubini, J.M. Cioffi, A. Duel-Hallen, H.V. Poor
2002 IEEE Journal on Selected Areas in Communications  
for Multiuser Detection in Wideband CDMA" by Affes et al. These detectors operate in various modes, ranging from linear receivers to interference cancellers.  ...  "Experiments on Pilot Symbol-Assisted Coherent Multistage Interference Canceller for DS-CDMA Mobile Radio," by Sawahashi et al., investigates a three-stage coherent multistage interference canceller in  ...  Poor is a member of the National Academy of Engineering, and is a Fellow of the Acoustical Society of America, the American Association for the Advancement of Science, the Institute of Mathematical Statistics  ... 
doi:10.1109/jsac.2002.983334 fatcat:gwicaur4rjbpda3d76fffrvqee

Perspectives for present and future CDMA-based communications systems

R. Fantacci, F. Chiti, D. Marabissi, G. Mennuti, S. Morosi, D. Tarchi
2005 IEEE Communications Magazine  
The traditional DS-CDMA detection technique is based on the use of a correlation receiver in which signals of additional users are considered pure interference.  ...  Since interference in DS-CDMA is cyclostationary, the receiver only needs to know the training sequence for the user of interest; hence, it can be considered a single-user receiver.  ... 
doi:10.1109/mcom.2005.1391507 fatcat:ko2l4almjzadpby64r6etzv52u

Multiuser Detection for the Uplink of Prefix-Assisted DS-CDMA Systems Employing Multiple Transmit and Receive Antennas

Paulo Silva, Rui Dinis
2006 IEEE Vehicular Technology Conference  
In this paper we consider the uplink transmission within a DS-CDMA system employing CP-assisted block transmission techniques combined with spatial multiplexing techniques that require multiple antennas  ...  To achieve high spectral and power efficiencies, future broadband wireless systems should combine spatial multiplexing techniques employing multiple transmit and receive antennas with transmission schemes  ...  We present an efficient frequency-domain receiver structure with an iterative MUD (MultiUser Detection) that combines IB-DFE principles with interference cancelation techniques.  ... 
doi:10.1109/vtcf.2006.193 dblp:conf/vtc/SilvaD06 fatcat:ypr7sqeqhbfppeg4md63rvksoi

Guest editorial spread spectrum for global communications I

I. Oppermann, P. vanRooyen, R. Kohno
1999 IEEE Journal on Selected Areas in Communications  
The approaches considered include interference cancellation, interference suppression, and hybrid techniques, which hold the most promise for high-efficiency applications under the multirate restrictions  ...  The simplest suboptimal single-user receivers for DS systems are the correlation receivers [2] .  ... 
doi:10.1109/jsac.1999.814804 fatcat:n5lywundsnagxecoa5xs2etaui

Guest editorial spread spectrum for global communications II

I. Oppermann, P. van Rooyen, R. Kohno
2000 IEEE Journal on Selected Areas in Communications  
The approaches considered include interference cancellation, interference suppression, and hybrid techniques, which hold the most promise for high-efficiency applications under the multirate restrictions  ...  The simplest suboptimal single-user receivers for DS systems are the correlation receivers [2] .  ... 
doi:10.1109/jsac.2000.821693 fatcat:cycqeqsv7nduzay4p2v22mesn4

A Comparison Survey of Multiple Access Scheme for upcoming 4G Communication

Digjaya Dhawan
2016 International Journal Of Engineering And Computer Science  
Among all the multiple access (MA) techniques, it is tried to demonstrate that IDMA (Interleave Division Multiple Access) technology can competently alleviate the interference among users and provision  ...  This paper throws light on numerous multiple access techniques anticipated in 4G communication systems.  ...  DS-CDMA DS-CDMA is the most sought after technique of CDMA techniques. The DS-CDMA transmitter proliferates each user's signal by a unique code waveform.  ... 
doi:10.18535/ijecs/v5i11.54 fatcat:aagmp3gjbfftrh6ndadw64yrpy

Implementation of W-CDMA System Based on IP Functions

Ai Feng Ren, Ming Luo, Fang Ming Hu
2011 Advanced Materials Research  
This paper presents architecture design and field programmable gate array (FPGA) implementation for Wideband Code Division Multiple Access (W-CDMA) transceiver system.  ...  Systems that implement the W-CDMA standard must be flexible enough to accommodate changes with the standard, as well as improvements in capacity enhancement techniques such as adaptive antenna and multi-user  ...  Jack, Implementation aspects for successive interference cancellation in DS/CDMA systems, Wireless Networks, Vol.4, 1998. pp. 447-452. [7] A. Amr, E.  ... 
doi:10.4028/ fatcat:psrxkfddq5gptis7kvh7bke664

Interference rejection in digital wireless communications

J.D. Laster, J.H. Reed
1997 IEEE Signal Processing Magazine  
Interference Rejection for Frequency Hopping Interference rejection for FH is not as well developed as interference rejection for DS or for CDMA.  ...  interference rejection for DS (dividing into single-user and multiuser techniques, with particular focus on CDMA interference rejection), and interference rejection for FH.  ... 
doi:10.1109/79.587051 fatcat:sx5pmfgocrgjfoealxa7jg4wse

A DSP-based DS-CDMA multiuser receiver employing partial parallel interference cancellation

N.S. Correal, R.M. Buehrer, B.D. Woerner
1999 IEEE Journal on Selected Areas in Communications  
The implementation of advanced DS-CDMA receivers based on multiuser detection principles is becoming a reality thanks to the combination of an improved understanding of the theoretical basis of multiuser  ...  In a parallel interference cancellation receiver, it is practical to use the soft outputs of a matched filter bank for amplitude estimation.  ...  Breslin for developing the multisensor testbed, and S. Nicoloso for his priceless contributions to this project.  ... 
doi:10.1109/49.761040 fatcat:hgvvtrbowvgwzkwkos3qlle3by

Multicarrier Systems

Hikmet Sari, Arne Svensson, Luc Vandendorpe
2008 EURASIP Journal on Wireless Communications and Networking  
, receiver structures and performance, interference cancellation, optimum bit and power allocation, radio resource allocation, scheduling, and cross-layer optimization.  ...  for both cyclicprefixed and zero-padded transmission techniques.  ...  Plass considers the cancellation of the intercell interference in cellular MC-CDMA at the receiving end of the downlink, by means of iterative techniques.  ... 
doi:10.1155/2008/598270 fatcat:c24ujqzlizcobmqurtmh6mfd2a

Multiuser Detection with Decision-Feedback Detectors and PIC in MC-CDMA System

Leila Sahraoui, Djemil Messadeg, Saliha e Hariz, Noureddine Doghmane
2018 TELKOMNIKA (Telecommunication Computing Electronics and Control)  
In this paper we propose an iterative parallel decision feedback (P-DF) receivers associated with parallel interference cancellation (PIC) for multicarrier code division multiple access (MC-CDMA) systems  ...  In a second time, an iterative proposed method based on the multi-stage techniques P-DFD (parallel DFD with two stages) and PIC was exploited to improve the performance of the system.  ...  In other hand, multiuser decision feedback detection has been exploited for channel estimation and linear interference suppression in DS-CDMA [14] .  ... 
doi:10.12928/telkomnika.v16i6.9448 fatcat:fgeuso5vgvgexfeiqm3rmzwyqi
« Previous Showing results 1 — 15 out of 600 results