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A Pragmatic Coded Modulation Scheme for High-Spectral-Efficiency Fiber-Optic Communications

Benjamin P. Smith, Frank R. Kschischang
2012 Journal of Lightwave Technology  
A pragmatic coded modulation system is presented that incorporates signal shaping and exploits the excellent performance and efficient high-speed decoding architecture of staircase codes.  ...  Reliable communication within 0.62 bits/s/Hz of the estimated capacity (per polarization) of a system with L=2000 km is provided by the proposed system, with an error floor below 1E-20.  ...  Other proposals for coded modulation in fiber-optic systems consider simplified channel models, and design codes for the resulting systems.  ... 
doi:10.1109/jlt.2012.2185683 fatcat:bm3oema2qjdxhffcsjkx6dnh6e

Recent developments in indoor optical wireless systems

R.J. Green, H. Joshi, M.D. Higgins, M.S. Leeson
2008 IET Communications  
Adding trellis coding to PPM further increases its advantage for the price of a more complex receiver.  ...  A DPPM symbol is Trellis-coded PPM: Trellis-coded modulation is designed to maximise the minimum Euclidean distance between allowed signal sequences by using signal-set expansion to provide redundancy  ... 
doi:10.1049/iet-com:20060475 fatcat:hxwekcduwjb6pcwwzwazfatrmm

A Journey from Improper Gaussian Signaling to Asymmetric Signaling

Sidrah Javed, Osama Amin, Basem Shihada, Mohamed-Slim Alouini
2020 IEEE Communications Surveys and Tutorials  
Such asymmetric shaping bridges the gap between theoretically and practically achievable limits with sophisticated transceiver and detection schemes in both coded/uncoded wireless/optical communication  ...  systems.  ...  multi-dimensional coded modulation format using amplitude-phase shift keying for single-stage [245] and multi-stage [274] nonlinearity compensation.  ... 
doi:10.1109/comst.2020.2989626 fatcat:zyno7ku6n5eqnp6rrcopczb4qu

Data-aided synchronization of coherent CPM-receivers

J. Huber, W. Liu
1992 IEEE Transactions on Communications  
Paper approved by the Editor for Synchronization and Optical Detection of the IEEE Communications Society. Manuscript  ...  estimation of carrier-phase and symbol-W i g for general coherent CPM receivers am!  ...  Dekker, "Tamed frequency modulation, a novel method to achieve spectrum economy in digital transmission," IEEE Trans. Commun., vol. COM-26, pp. 534-542, May 1978.  ... 
doi:10.1109/26.126719 fatcat:zb6iaqvsv5etjhusoqe5sybw54

Multidimensional modulation formats for optical transmission systems

Saleem Alreesh, Technische Universität Berlin, Technische Universität Berlin, Hans-Joachim Grallert
2018
The idea of 2­D trellis coded modulation (TCM) is first reviewed. Afterwards, the benefits of extending the dimensionality to multi-D space are explained.  ...  In particular, four-dimensional (4­D) signal constellations are considered for coherent optical communication systems.  ...  CHAPTER 4 Trellis Coded Modulation for Optical Transmission System This chapter discusses the benefit of combining coding and modulation, so-called coded modulation.  ... 
doi:10.14279/depositonce-7110 fatcat:nzzctuotyvb75h5eoqchs3oqgm

Error performance analysis of a concatenated coding scheme with 64/256-QAM trellis coded modulation for the north American cable modem standard

D. Rhee, R.H.M. Zaragoza
Proceedings. 1998 IEEE International Symposium on Information Theory (Cat. No.98CH36252)  
In this paper, concatenated coding schemes with Reed-Solomon (RS) coding in the outer stage and trellis coded modulation (TCM) in the inner stage are analyzed.  ...  The TCM decoder incorporates a Viterbi decoder compliant with ITU-T Recommendation J.83, Annex B (North American digital video transmission specifications for Multimedia Cable Network System (MCNS)).  ...  Differential Precoder A differential precoder is used to perform a 90 o rotationally invariant trellis coding. The key for robust modem designs is to have very fast recovery.  ... 
doi:10.1109/isit.1998.708642 fatcat:luakwcouordt7arqf5uu7kmlqe

Convolutional Codes [chapter]

Trellis and Turbo Coding  
While no group-trellis codes exist for 2-D constellations that are rotationally invariant, such codes can be found for higher-dimensional signal sets.  ...  Wei [36] and Pietrobon and Costello [21] tackle the problem of designing rotationally invariant trellis codes for M-PSK signal constellations.  ...  Turbo product codes allow for relatively high data rates.  ... 
doi:10.1002/0471667846.ch4 fatcat:fppahkhej5dqhjrutj5gcjfvoa

A Survey of FPGA-Based Robotic Computing [article]

Zishen Wan, Bo Yu, Thomas Yuang Li, Jie Tang, Yuhao Zhu, Yu Wang, Arijit Raychowdhury, Shaoshan Liu
2021 arXiv   pre-print
In this paper, we give an overview of previous work on FPGA-based robotic accelerators covering different stages of the robotic system pipeline.  ...  An analysis of software and hardware optimization techniques and main technical issues is presented, along with some commercial and space applications, to serve as a guide for future work.  ...  The sensing module bridges sensors and computing system.  ... 
arXiv:2009.06034v3 fatcat:fnp5q5wcyrd2hgpllso22mv2xm

Asymmetric Signaling: A New Dimension of Interference Management in Hardware Impaired Communication Systems

Sidrah Javed
2021
Many presented the widely linear model for in-phase and quadrature imbalance (IQI) but failed to recognize the impropriety induced in the system because of the self-interfering signals.  ...  Evidently, the incorporation of both inherent and induced impropriety characteristics is critical for effective utilization.  ...  multi-dimensional coded modulation format using amplitude-phase shift keying for single-stage [101] and multi-stage [357] nonlinearity compensation.  ... 
doi:10.25781/kaust-i5t5s fatcat:lkswx5cfjrdqrdjytuskjp77ya

MLSE diversity receiver structures [article]

Brian Hart, University Of Canterbury
2011
This thesis presents the design and analysis of MLSE diversity receivers for linearly modulated signals transmitted over known and unknown time- and frequency-selective channels, corrupted by additive  ...  The extended MLSE receiver structure of Ungerboeck [56] is extended further; for the case of a known but time-varying, frequency-selective channel with diversity.  ...  Coding for the A WGN channel is a mature area, particularly block and convolutional codes. Trellis codes have been discovered recently [561, where coding is perfmmed jointly with modulation.  ... 
doi:10.26021/1412 fatcat:fjfxgxtfqbcxdc3zyfmw4bth4q

Coding and modulation for spectral efficient transmission [article]

Nabil Sven Muhammad, Universität Stuttgart, Universität Stuttgart
2010
We investigate channel coding and modulation for bandwidth-efficient transmission.  ...  For the bit-interleaved coded modulation (BICM) system, we optimize mappings for quadrature amplitude modulation with respect to the resulting symbol and bit error rates at the demapper, and to the achievable  ...  the channel capacity limits of fiber-optic transmission systems.  ... 
doi:10.18419/opus-2676 fatcat:2pwqvoov2bhxlfa7xtvelywd7a

On unifying sparsity and geometry for image-based 3D scene representation

Ivana Tošic
2009
However, the crosscorrelation measure [Har00] is not rotationally invariant and it fails to capture rotations of patterns between views.  ...  These systems use a convex mirror placed above a perspective camera, where the optical axis of the lens is aligned with the mirror's axis.  ...  Since this thesis proposes the use of omnidirectional cameras for 3D scene representation with multi-view images, we perform learning of stereo dictionaries for omnidirectional images.  ... 
doi:10.5075/epfl-thesis-4380 fatcat:aiiznlt3t5hfvpc3mjn6oj24yi