Outage Behavior of Discrete Memoryless Channels Under Channel Estimation Errors
Abstract
Classically, communication systems are designed assuming perfect channel state information at the receiver and/or transmitter. However, in many practical situations, only an estimate of the channel is available that differs from the true channel. We address this channel mismatch scenario by using the notion of estimation-induced outage capacity, for which we provide an associated coding theorem and its strong converse, assuming a discrete memoryless channel. We illustrate our ideas via numerical simulations for transmissions over Ricean fading channels under a quality of service (QoS) constraint using rate-limited feedback channel and maximum likelihood (ML) channel estimation. Our results provide intuitive insights on the impact of the channel estimate and the channel characteristics (SNR, Ricean K-factor, training sequence length, feedback rate, etc.) on the mean outage capacity.
Cite
@article{arxiv.0706.2963,
title = {Outage Behavior of Discrete Memoryless Channels Under Channel Estimation Errors},
author = {Pablo Piantanida and Gerald Matz and Pierre Duhamel},
journal= {arXiv preprint arXiv:0706.2963},
year = {2007}
}