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High-SNR Power Offset in Multiantenna Communication
Open accessAbstract
The analysis of the multiple-antenna capacity in the high-SNR regime has hitherto focused on the high-SNR slope (or maximum multiplexing gain), which quantifies the multiplicative increase as a function of the number of antennas. This traditional characterization is unable to assess the impact of prominent channel features since, for a majority of channels, the slope equals the minimum of the number of transmit and receive antennas. Furthermore, a characterization based solely on the slope captures only the scaling but it has no notion of the power required for a certain capacity. This paper advocates a more refined characterization whereby, as a function of SNR|/sub dB/, the high-SNR capacity is expanded as an affine function where the impact of channel features such as antenna correlation, unfaded components, etc., resides in the zero-order term or power offset. The power offset, for which we find insightful closed-form expressions, is shown to play a chief role for SNR levels of practical interest.
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Cites
Handbook of Mathematical Functions
McQuarrie, D. A. (1966) · American Journal of Physics · doi:10.1119/1.1972842 · Cited by 40,433
Fundamentals of Wireless Communication
Tse, D., & Viswanath, P. (2005) · doi:10.1017/cbo9780511807213 · Cited by 13,162
Cited by
Foundations of MIMO Communication
Heath Jr, R. W., & Lozano, A. (2018) · Cambridge University Press eBooks · doi:10.1017/9781139049276 · Cited by 426
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Metadata
- Authors
- Lozano, A., Tulino, A. M., & Verdu, S.
- Venue
- IEEE Transactions on Information Theory
- Published
- 2005-12
- Volume
- 51
- Issue
- 12
- Pages
- 4134-4151
- ISSN
- 0018-9448 (ISSN-L)
- OpenAlex
- W2181292907
- Cited by
- 296
- References
- 2
- FWCI
- 21.29
- Type
- journal article
- Language
- en
- Open access
- green
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- Lozano, A., Tulino, A. M., & Verdu, S. (2005). High-SNR Power Offset in Multiantenna Communication. IEEE Transactions on Information Theory. https://doi.org/10.1109/tit.2005.858937
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