Effects of channel state information uncertainty on the performance of stochastic signaling

Date
2011
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Source Title
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
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Publisher
IEEE
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English
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Conference Paper
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Abstract

In this paper, stochastic signaling is studied for power-constrained scalar valued binary communications systems in the presence of uncertainties in channel state information (CSI). First, it is shown that, for a given decision rule at the receiver, stochastic signaling based on the available CSI at the transmitter results in a randomization between at most two different signal levels for each symbol. Then, the performance of stochastic signaling and conventional deterministic signaling is compared, and sufficient conditions are derived for improvability and nonimprovability of deterministic signaling via stochastic signaling in the presence of CSI uncertainty. Finally a numerical example is presented to explore the theoretical results. © 2011 IEEE.

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Keywords
Probability of error, Communications systems, Decision rules, In-channels, Numerical example, Probability of error, Signal level, Sufficient conditions, Theoretical result, Channel state information, Signal receivers, Stochastic systems, Signaling
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Published Version (Please cite this version)