An efficient algorithm for optimal margin maximization in multicarrier communication systems

We present a computationally efficient, integer-bit power allocation algorithm for discrete multitone modulation (DMT) which optimally maximizes the performance margin. Using efficient lookup table searches and a Lagrange multiplier bisection search, our algorithm converges faster to the optimal sol...

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Vydáno v:Global Telecommunications Conference (GLOBECOM), 1999 IEEE Ročník 1B; s. 899 - 903 vol. 1b
Hlavní autoři: Krongold, B.S., Ramchandran, K., Jones, D.L.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 1999
Témata:
Adaptive equalizers
AWGN channels
Copper
Error probability
Intersymbol interference
Lagrangian functions
OFDM modulation
Power engineering computing
Table lookup
Wiring
ISBN:0780357965, 9780780357969
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Popis
Shrnutí:We present a computationally efficient, integer-bit power allocation algorithm for discrete multitone modulation (DMT) which optimally maximizes the performance margin. Using efficient lookup table searches and a Lagrange multiplier bisection search, our algorithm converges faster to the optimal solution than existing optimal techniques and can replace the use of suboptimal methods because of its low computational complexity. A fast algorithm is developed and pseudocode is given as well as numerical and qualitative comparisons to existing methods.
ISBN:0780357965
9780780357969
DOI:10.1109/GLOCOM.1999.830212