DocumentCode
2056747
Title
Optimal discrete bit loading for DMT based constrained multicarrier systems
Author
Fasano, A. ; Di Blasio, G. ; Baccarelli, E. ; Biagi, M.
Author_Institution
Dept. Inf. Comput., Univ. di Roma, Italy
fYear
2002
fDate
2002
Firstpage
243
Abstract
We present the solution for the optimal discrete bit loading in multicarrier systems employing discrete multitone (DMT) modulation, when additional constraints on either the maximum allowable energy for each subchannel or the maximal cardinality of the QAM constellations to be used are given. Conditions for the optimality of greedy algorithms in this context are also provided. The solution is based on some results in matroid theory about combinatorial optimization.
Keywords
combinatorial mathematics; optimisation; quadrature amplitude modulation; DMT based constrained multicarrier systems; QAM constellations; combinatorial optimization; discrete multitone modulation; greedy algorithms; margin maximization; matroid theory; maximal cardinality; maximum allowable energy; modulation/coding; optimal discrete bit loading; rate maximization; subchannel; Algorithm design and analysis; DSL; Digital modulation; Greedy algorithms; OFDM modulation; Quadrature amplitude modulation;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN
0-7803-7501-7
Type
conf
DOI
10.1109/ISIT.2002.1023515
Filename
1023515
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