Rao, Chaitanya and Hassibi, Babak (2003) Analysis of multiple antenna wireless links at low SNR. In: IEEE International Symposium on Information Theory, 2003. Proceedings. IEEE , Piscataway, NJ, p. 468. ISBN 0780377281. https://resolver.caltech.edu/CaltechAUTHORS:20190308-135958304
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Abstract
In the low signal-to-noise (SNR) regime when the channel is not known to both transmitter and receiver, we show that the capacity of a multiple antenna Rayleigh fading link is asymptotically quadratic in the SNR for all practical input distributions. This is much less than the known channel case where it exhibits a linear growth in the SNR. Under various signaling constraints we show that mutual information is maximized by using a single transmit antenna. Also sending training symbols offers no advantage at low SNR.
| Item Type: | Book Section | ||||||||
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| Additional Information: | © 2003 IEEE. This work supported in part by the National Science Foundation under grant no. CCR-0133818, by the office of Naval Research under grant no. N00014-02-1-0578, and by Caltech's Lee Center for Advanced Networking. | ||||||||
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| DOI: | 10.1109/isit.2003.1228485 | ||||||||
| Record Number: | CaltechAUTHORS:20190308-135958304 | ||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190308-135958304 | ||||||||
| Official Citation: | Chaitanya Rao and B. Hassibi, "Analysis of multiple antenna wireless links at low SNR," IEEE International Symposium on Information Theory, 2003. Proceedings., Yokohama, Japan, 2003, pp. 468-. doi: 10.1109/ISIT.2003.1228485 | ||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
| ID Code: | 93661 | ||||||||
| Collection: | CaltechAUTHORS | ||||||||
| Deposited By: | George Porter | ||||||||
| Deposited On: | 08 Mar 2019 22:33 | ||||||||
| Last Modified: | 16 Nov 2021 16:59 |
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