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An efficient partial feedback scheme is proposed for the subchannel allocation in the multiuser OFDM systems to minimize the system power consumption under the constraints of the overall target throughput and bit error rate. The conventional feedback schemes only send back the minor subchannels' information or compress the channel information to few bits. There is a large margin left corresponding...
Emerging applications involving low-cost wireless sensor networks motivate well optimization of orthogonal frequency-division multiplexing (OFDM) in the power-limited regime. To this end, the present paper develops loading algorithms to minimize transmit-power under rate and error probability constraints, using three types of channel state information at the transmitter (CSIT): deterministic (per...
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