Khina, Anatoly and Kochman, Yuval and Erez, Uri (2016) The dirty MIMO multiple-access channel. In: 2016 IEEE International Symposium on Information Theory (ISIT). IEEE , Piscataway, NJ, pp. 1481-1485. ISBN 978-1-5090-1807-9. https://resolver.caltech.edu/CaltechAUTHORS:20160823-160229741
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Abstract
In the scalar dirty multiple-access channel, in addition to Gaussian noise, two additive interference signals are present, each known non-causally to a single transmitter. It was shown by Philosof et al. that for strong interferences, an i.i.d. ensemble of codes does not achieve the capacity region. Rather, a structured-codes approach was presented, which was shown to be optimal in the limit of high signal-to-noise ratios (SNRs), where the sum-capacity is dictated by the minimal (“bottleneck”) channel gain. In the present work, we consider the multiple-input multiple-output (MIMO) variant of this setting. In order to incorporate structured codes in this case, one can utilize matrix decompositions, which transform the channel into effective parallel scalar dirty multiple-access channels. This approach however suffers from a “bottleneck” effect for each effective scalar channel and therefore the achievable rates strongly depend on the chosen decomposition. It is shown that a recently proposed decomposition, where the diagonals of the effective channel matrices are equal up to a scaling factor, is optimal at high SNRs, under an equal rank assumption.
Item Type: | Book Section | ||||||||||||
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Additional Information: | © 2016 IEEE. | ||||||||||||
DOI: | 10.1109/ISIT.2016.7541545 | ||||||||||||
Record Number: | CaltechAUTHORS:20160823-160229741 | ||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160823-160229741 | ||||||||||||
Official Citation: | A. Khina, Y. Kochman and U. Erez, "The dirty MIMO multiple-access channel," 2016 IEEE International Symposium on Information Theory (ISIT), Barcelona, Spain, 2016, pp. 1481-1485. doi: 10.1109/ISIT.2016.7541545 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7541545&isnumber=7541040 | ||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
ID Code: | 69867 | ||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||
Deposited By: | Tony Diaz | ||||||||||||
Deposited On: | 23 Aug 2016 23:25 | ||||||||||||
Last Modified: | 11 Nov 2021 04:20 |
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