Novel efficient bit-loading algorithms for peak-energy-limitedADSL-type multicarrier systems
IEEE Transactions on Signal Processing
A power line communication network infrastructure for the smart home
IEEE Wireless Communications
Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints
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
Multicarrier modulation for data transmission: an idea whose time has come
IEEE Communications Magazine
Power line communications: state of the art and future trends
IEEE Communications Magazine
Coding and modulation for a horrible channel
IEEE Communications Magazine
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
Transmit power adaptation for multiuser OFDM systems
IEEE Journal on Selected Areas in Communications
IEEE Network: The Magazine of Global Internetworking
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This paper addresses the problem of efficient bandwidth allocation for multiuser orthogonal frequency division multiplexing (OFDM) systems over frequency-selective channels. For a given coding and medium access scheme and for specific channel gains, the achievable data rates depend on the assignment of the available subchannels to the different users. However, in frequency-selective channels, the various users experience different channel conditions, thus the application of effective bandwidth allocation rules results in enhanced multiuser diversity. This paper presents a computationally efficient solution for dynamic subchannel assignment. The proposed algorithm provides enhanced system performance compared with the fixed time division multiple access (TDMA) solution and also results in proportional data rates according to channel quality of each user. As a case study, we demonstrate the performance of the proposed algorithm in the indoor power line network with multiple OFDM links between a central station and a number of user devices.