Energy Efficient Protocols for Wireless Systems

Agrawal, P.

doi:10.1007/0-306-47330-5_11

Cited by 10 publications

(2 citation statements)

References 13 publications

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“…4 The parameters ξ T and ξ D are weights assigned to the transmit and the decoding energy respectively. ξ T depends on the path-loss across the channel.…”

Section: Minimization Of Total Energy By Optimizing Over the Ratementioning

confidence: 99%

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Green codes: Energy-efficient short-range communication

Grover

Sahai

2008

2008 IEEE International Symposium on Information Theory

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Abstract-A green code attempts to minimize the total energy per-bit required to communicate across a noisy channel. The classical information-theoretic approach neglects the energy expended in processing the data at the encoder and the decoder and only minimizes the energy required for transmissions. Since there is no cost associated with using more degrees of freedom, the traditionally optimal strategy is to communicate at rate zero.In this work, we use our recently proposed model for the power consumed by iterative message passing. Using generalized sphere-packing bounds on the decoding power, we find lower bounds on the total energy consumed in the transmissions and the decoding, allowing for freedom in the choice of the rate. We show that contrary to the classical intuition, the rate for green codes is bounded away from zero for any given error probability. In fact, as the desired bit-error probability goes to zero, the optimizing rate for our bounds converges to 1.

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“…4 The parameters ξ T and ξ D are weights assigned to the transmit and the decoding energy respectively. ξ T depends on the path-loss across the channel.…”

Section: Minimization Of Total Energy By Optimizing Over the Ratementioning

confidence: 99%

“…The problem of minimizing combined transmission and processing energy is well studied in networks. The common thread in [4], [5], [6], [7], [8], [9] is that the energy consumed in processing the signals can be a substantial fraction of the total power. In [7], an information-theoretic formulation is considered.…”

Section: Introductionmentioning

confidence: 99%