A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2008; you can also visit the original URL.
The file type is application/pdf.
Filters
Channel precoding with small envelope variations for π=4-QPSK and MSK over frequency-selective slow fading channels
2003
IEEE Transactions on Vehicular Technology
Preserved Fulltext
This paper presents channel precoding schemes to combat intersymbol interference (ISI) over a frequency-selective slow fading channel in wireless communication systems using 4 shifted quadrature phase-shift ...
Index Terms-Channel precoding, equalization, intersymbol interference (ISI), minimum shift keying (MSK), 4 shifted quadrature phase-shift keying ( 4-QPSK), slow frequency-selective fading. ...
ACKNOWLEDGMENT The authors wish to thank the anonymous reviewers for their thorough reviews and helpful suggestions. ...
doi:10.1109/tvt.2002.807226
fatcat:uh5ebmmckngf3avvnwje3n65pi
A Survey on Higher-Order QAM Constellations: Technical Challenges, Recent Advances, and Future Trends
2021
IEEE Open Journal of the Communications Society
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
However, only square constellations are not sufficient for varying channel conditions and rate requirements, thus, efficient odd power of 2 constellations were introduced. ...
Finally, a comparative study of various QAM constellations is presented which justifies the supremacy of HQAM over other QAM constellations for various wireless communication systems and a potential modulation ...
modulations schemes encoded with gray mapping. In [195] , authors derived the generalized log likelihood ratio for soft decision channel decoding for QAM constellations. ...
doi:10.1109/ojcoms.2021.3067384
fatcat:xx3tpsasevbqjg3ej2vktivqdi