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Soft-In Soft-Out DFE and Bi-Directional DFE

Seongwook Jeong, Jaekyun Moon
2011 IEEE Transactions on Communications  
We design a soft-in soft-out (SISO) decision feedback equalizer (DFE) that performs better than its linear counterpart in turbo equalizer (TE) setting.  ...  We also describe a new extrinsic information combining strategy involving the outputs of two DFEs running in opposite directions, that explores error correlation between the two sets of DFE outputs.  ...  Powerful modern equalization methods are based on the turbo equalization principle established in [1] , wherein a soft-in soft-out (SISO) equalizer (or detector) and a SISO error-correction decoder exchange  ... 
doi:10.1109/tcomm.2011.063011.100501 fatcat:jkk26g5x4jbvfawrpecaohjn4q

Soft-In Soft-Out DFE and Bi-directional DFE [article]

Seongwook Jeong, Jaekyun Moon
2011 arXiv   pre-print
We design a soft-in soft-out (SISO) decision feedback equalizer (DFE) that performs better than its linear counterpart in turbo equalizer (TE) setting.  ...  We also describe a new extrinsic information combining strategy involving the outputs of two DFEs running in opposite directions, that explores error correlation between the two sets of DFE outputs.  ...  Powerful modern equalization methods are based on the turbo equalization principle established in [1] , wherein a soft-in soft-out (SISO) equalizer (or detector) and a SISO errorcorrection decoder exchange  ... 
arXiv:1104.3561v2 fatcat:vx3dx7xnzzdergazcmwcjylmk4

Turbo Equalization Based on Bi-Directional DFE

S. Jeong, J. Moon
2010 2010 IEEE International Conference on Communications  
With a specific residual interference processing strategy proposed, the bi-directional DFE (BiDFE) are free from any significant error propagation.  ...  We utilize a pair of decision feedback equalizers (DFEs) operating in opposite directions in turbo equalization setting to remove the effect of intersymbol interference (ISI) at the receiver.  ...  Powerful modern equalization methods are based on the turbo equalization principle established in [1] , wherein a soft-in soft-out (SISO) detector and a SISO decoder exchange extrinsic information in  ... 
doi:10.1109/icc.2010.5502000 dblp:conf/icc/JeongM10 fatcat:35iy4hn5izc7ddev2dyr3pj7ji

Frequency-Domain Turbo Equalisation in Coded SC-FDMA Systems: EXIT Chart Analysis and Performance

Jiayi Zhang, Lie-Liang Yang, Lajos Hanzo
2012 2012 IEEE Vehicular Technology Conference (VTC Fall)  
The final one is the proposed hybrid interference cancellation (HIC)-aided turbo FD-DFE, which combines successive interference cancellation (SIC) with iterative PIC and decoding.  ...  The second one is a parallel interference cancellation (PIC)-assisted turbo FD decision-feedback equaliser (DFE).  ...  INTRODUCTION In time-domain (TD) turbo equalisation schemes [1] , such as the maximum a posteriori probability (MAP) soft-in/soft-out (SISO) equaliser, the classic linear equaliser (LE) or the decision-feedback  ... 
doi:10.1109/vtcfall.2012.6399199 dblp:conf/vtc/ZhangYH12 fatcat:svvoagau5bg2zosthgf4xa6ify

Self-Iterating Soft Equalizer [article]

Seongwook Jeong, Jaekyun Moon
2013 arXiv   pre-print
Constituent equalizers are allowed to exchange soft information in the absence of interleavers based on the method that are designed to suppress significant correlation among their soft outputs.  ...  deep nulls and valleys within the signal band.  ...  Again, σ 2 vn is time-varying here. 3) Bi-directional DFE of L e (x n ) = 1 (1 + ρ bi ) L e,f (x n ) + L e,b (x n ) (24) where the subscripts f and b mean the forward and backward DFEs, respectively, and  ... 
arXiv:1306.0926v1 fatcat:mxfu6jty7zg3za65djhdd2u7pa

Iterative Equalization with Decision Feedback based on Expectation Propagation

Serdar Sahin, Antonio Maria Cipriano, Charly Poulliat, Marie-Laure Boucheret
2018 IEEE Transactions on Communications  
In this paper, we derive an iterative DFE-IC, capitalizing on the use of soft feedback based on expectation propagation, along with the use of prior information for improved filtering and interference  ...  This DFE-IC significantly outperforms exact turbo LE-IC, especially at high spectral efficiency, and also exhibits various advantages and performance improvements over existing variants of DFE-IC.  ...  DFE-ICs in [20] and [21] were later used as constituent elements for more advanced receivers such as bi-directional DFE, or structures obtained by parallel concatenation of FIRs [22] . 2) Iterative  ... 
doi:10.1109/tcomm.2018.2843760 fatcat:6nuihf4rqfgxnmsnqnxpwoheoy

Europeanizing the National Education Space? Adjusting to the Open Method of Coordination (OMC) in the UK

Nafsika Alexiadou, Bettina Lange
2014 International Journal of Public Administration  
It addresses relationships between political and administrative actors in the process of responding to the education OMC.  ...  This article examines the reception of the education Open Method of Coordination (OMC) in the UK as an aspect of Europeanization of national administrations.  ...  In relation to education, the main function of the JIU was to "promote and represent the interests of the DfE and BIS in the EU" (Organisational Chart, May 2010).  ... 
doi:10.1080/01900692.2014.934836 fatcat:yuhinxkkkzcirbnfxgiz7vsfde

Free Vibration Analysis of Curved Sandwich Beams: A Dynamic Finite Element [chapter]

Seyed M., Ernest J.
2011 Advances in Vibration Analysis Research  
out and evaluated in order to obtain the element matrices.  ...  & Adique, 2010) when the core is made of a soft material.  ...  Matrices (A3), (A4), (A5) and (A6) are added according to equation (21) in order to obtain the 6x6 element stiffness matrix for a symmetric straight sandwich beam.  ... 
doi:10.5772/15115 fatcat:kbrz32iaqnbpdekjwhrnyseccu

Sequential LSQR-based ICI equalization and decision-feedback ISI cancellation in pulse-shaped multicarrier systems

Mario Hampejs, Pavol Svac, Georg Taubock, Karlheinz Grochenig, Franz Hlawatsch, Gerald Matz
2009 2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications  
We propose a frequency-domain method for equalizing intercarrier interference (ICI) and intersymbol interference (ISI) in multicarrier transmissions over rapidly time-varying and strongly delay-spread  ...  A pulse-shaped multicarrier system is considered because of its generality and advantages.  ...  Existing works in a somewhat similar direction include [18] , where postcursor ISI is also removed by a DFE but ICI is reduced by a conventional parallel interference cancellation scheme, and [19] ,  ... 
doi:10.1109/spawc.2009.5161735 fatcat:h4kgexo34rc45jyt7zt3ohh3vy

Hardware oriented, quasi-optimal detectors for iterative and non-iterative MIMO receivers

Alessandro Tomasoni, Massimiliano Siti, Marco Ferrari, Sandro Bellini
2012 EURASIP Journal on Wireless Communications and Networking  
In this article we study hardware-oriented versions of the recently appeared Layered ORthogonal lattice Detector (LORD) and Turbo LORD (T-LORD).  ...  To focus on a specific setting, we consider the indoor MIMO wireless LAN 802.11n standard, taking into account errors in channel estimation and a frequency selective, spatially correlated channel model  ...  The former strategy combines "soft decision" subtraction (soft-DFE) and linear minimum mean square error (MMSE) spatial equalization [8, 9, 15] .  ... 
doi:10.1186/preaccept-3125370685511531 fatcat:dlvwvrmbwjbwhijnvpsk6vqtym

Hardware oriented, quasi-optimal detectors for iterative and non-iterative MIMO receivers

Alessandro Tomasoni, Massimiliano Siti, Marco Ferrari, Sandro Bellini
2012 EURASIP Journal on Wireless Communications and Networking  
In this article we study hardware-oriented versions of the recently appeared Layered ORthogonal lattice Detector (LORD) and Turbo LORD (T-LORD).  ...  To focus on a specific setting, we consider the indoor MIMO wireless LAN 802.11n standard, taking into account errors in channel estimation and a frequency selective, spatially correlated channel model  ...  The former strategy combines "soft decision" subtraction (soft-DFE) and linear minimum mean square error (MMSE) spatial equalization [8, 9, 15] .  ... 
doi:10.1186/1687-1499-2012-62 fatcat:i7buth36ibh3zlxmettnte277q

Role of surface structural motifs on the stability and reflectance anisotropy spectra of Sb-rich GaSb(001) reconstructions

Conor Hogan, Rita Magri, Rodolfo Del Sole
2011 Physical Review B  
softness of the Ga-Sb bonds.  ...  Formation of the surface antisites occurs spontaneously in the presence of dynamical negative charge fluctuations and is favored by the excellent matching between GaSb(001) and metallic Sb and by the natural  ...  Houze for providing us with atomic coordinates for the c(2 × 10)-s1a reconstructions, and to A. Marini for help in coding the spin-orbit coupling into the YAMBO code.  ... 
doi:10.1103/physrevb.83.155421 fatcat:3527qbtcb5be3jljijmjmdr2y4

The Teaching Excellence Framework in the United Kingdom: An Opportunity to Include International Students as "Equals"?

Aneta Hayes
2017 Journal of Studies in International Education  
Despite being British-based, the analysis has international implications as it points to a series of ways in which the scope and nature of metrics used in national evaluations of teaching quality can affect  ...  The article also argues that the TEF, being a major higher education reform, can lead to change in attitudes towards international students and contribute to their more equal status.  ...  (BIS, 2015, p. 47 -55) .  ... 
doi:10.1177/1028315317720768 fatcat:cts7h6rjyjd7pbsw4u666oovhe

Adaptive MMSE multiuser receivers in MIMO OFDM wireless communication

Titus Eneh, Predrag Rapajic, Kwashie Anang
2010 2010 IEEE 12th International Conference on Communication Technology  
Although OFDM has been around since the 1960s, only recently has it been recognized as an outstanding method for high speed, bi-directional wireless network.  ...  steady state, and thereafter it can be made to run in a directed mode.  ...  Throughput and capacity can be improved when multiple antennas are applied at the transmitter and receiver sides, especially in a rich scattering environment [15] [16] as well as frequency-selective fading  ... 
doi:10.1109/icct.2010.5688544 fatcat:e2jbc2q7ifgj3djdftz5slahlm

Vocational education and training in the spotlight: back to the future for the UK's Coalition Government?

Alison Fuller, Lorna Unwin
2011 London Review of Education  
This paper examines the Coalition Government's plans for vocational education and training for 14-to 19-year-olds in England.  ...  It argues that new types of educational institutions will enable the emergence of new forms of segmentation in which the vocational track is likely to become split into 'technical education' and lower  ...  She is also a Project Leader in LLAKES.  ... 
doi:10.1080/14748460.2011.585879 fatcat:ipsjdabjunfl5colsbtl4agwym
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