Integer and combinatorial optimization
Integer and combinatorial optimization
Elements of information theory
Elements of information theory
Understanding digital subscriber line technology
Understanding digital subscriber line technology
ADSL, VDSL, and Multicarrier Modulation: Wiley Series in Telecommunications and Signal Processing
ADSL, VDSL, and Multicarrier Modulation: Wiley Series in Telecommunications and Signal Processing
OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
OFDM Wireless LANs: A Theoretical and Practical Guide
OFDM Wireless LANs: A Theoretical and Practical Guide
Novel efficient bit-loading algorithms for peak-energy-limitedADSL-type multicarrier systems
IEEE Transactions on Signal Processing
Rate-maximizing power allocation in OFDM based on partial channel knowledge
IEEE Transactions on Wireless Communications
Adaptive OFDM Systems With Imperfect Channel State Information
IEEE Transactions on Wireless Communications
A digital audio broadcasting (DAB) receiver
IEEE Transactions on Consumer Electronics
New high-rate wireless LAN standards
IEEE Communications Magazine
Coding and modulation for a horrible channel
IEEE Communications Magazine
Transmission techniques for digital terrestrial TV broadcasting
IEEE Communications Magazine
Opportunistic underlay transmission in multi-carrier cognitive radio systems
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
ICT'09 Proceedings of the 16th international conference on Telecommunications
An efficient bit-loading algorithm with peak BER constraint for the band-extended PLC
ICT'09 Proceedings of the 16th international conference on Telecommunications
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
EURASIP Journal on Advances in Signal Processing - Special issue on filter banks for next-generation multicarrier wireless communications
Cyclic prefix design and allocation in bit-loaded OFDM over power line communication channels
IEEE Transactions on Communications
CSCC'11 Proceedings of the 2nd international conference on Circuits, Systems, Communications & Computers
Robustness maximization of parallel multichannel systems
Journal of Electrical and Computer Engineering - Special issue on Resource Allocation in Communications and Computing
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Multicarrier modulation is a powerful transmission technique that provides improved performance in various communication fields. A fundamental topic of multicarrier communication systems is the bit and power loading, which is addressed in this article as a constrained multivariable nonlinear optimization problem. In particular, we present the main classes of loading problems, namely, rate maximization and margin maximization, and we discuss their optimal solutions for the single-user case. Initially, the classical water-filling solution subject to a total power constraint is presented using the Lagrange multipliers optimization approach. Next, the peak-power constraint is included and the concept of cup-limited waterfilling is introduced. The loading problem is also addressed subject to the integer-bit restriction and the optimal discrete solution is examined using combinatorial optimization methods. Furthermore, we investigate the duality conditions of the rate maximization and margin maximization problems and we highlight various ideas for low-complexity loading algorithms. This article surveys and reviews existing results on resource allocation in constrained multicarrier systems and presents new trends in this area.