Journal Article10.1109/26.818869
Computationally efficient optimal power allocation algorithms for multicarrier communication systems
475
TL;DR: This work presents an optimal, computationally efficient, integer-bit power allocation algorithm for discrete multitone modulation using efficient lookup table searches and a Lagrange-multiplier bisection search that can replace the use of suboptimal methods.
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Abstract: We present an optimal, computationally efficient, integer-bit power allocation algorithm for discrete multitone modulation. Using efficient lookup table searches and a Lagrange-multiplier bisection search, our algorithm converges faster to the optimal solution than existing techniques and can replace the use of suboptimal methods because of its low computational complexity. Fast algorithms are developed for the data rate and performance margin maximization problems.
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References
Multicarrier modulation for data transmission: an idea whose time has come
TL;DR: The general technique of parallel transmission on many carriers, called multicarrier modulation (MCM), is explained, and the performance that can be achieved on an undistorted channel and algorithms for achieving that performance are discussed.
4.1K
Efficient bit allocation for an arbitrary set of quantizers (speech coding)
Y. Shoham,Allen Gersho +1 more
TL;DR: In this article, a bit allocation algorithm that is capable of efficiently allocating a given quota of bits to an arbitrary set of different quantizers is proposed, which produces an optimal or very nearly optimal allocation, while allowing the set of admissible bit allocation values to be constrained to nonnegative integers.
962
Patent
Ensemble modem structure for imperfect transmission media
Dirk Hughes-Hartogs
- 05 May 1986
TL;DR: In this paper, a high speed modem that transmits and receives digital data on an ensemble of carrier frequencies spanning the usable band of a dial-up telephone line is described, which includes a system for variably allocating data and power among the carriers to compensate for equivalent noise and to maximize the data rate.
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