International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings.
DOI: 10.1109/isit.2004.1365324
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Abstract: Abstract-The analysis of the multiple-antenna capacity in the highregime has hitherto focused on the highslope (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 sca… Show more

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Cited by 21 publications
(32 citation statements)
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“…In many channels of interest, such as Ricean and Rayleigh-faded with nonsingular correlations, this is the case whenever n T ≤n R . If n T >n R or in other classes of channels, the power allocation at high SNR need not be uniform [15,38].Beyond these asymptotes, the transmit powers satisfying (5) cannot, in general, be found explicitly. In the remainder of this section we derive-directly from (5)-an iterative power allocation algorithm.…”
mentioning
confidence: 99%
“…In many channels of interest, such as Ricean and Rayleigh-faded with nonsingular correlations, this is the case whenever n T ≤n R . If n T >n R or in other classes of channels, the power allocation at high SNR need not be uniform [15,38].Beyond these asymptotes, the transmit powers satisfying (5) cannot, in general, be found explicitly. In the remainder of this section we derive-directly from (5)-an iterative power allocation algorithm.…”
mentioning
confidence: 99%
“…In (26), ψ (·) is the digamma function [37]. Proof: A proof of this corollary is provided in Appendix E. With the help of (26), we confirm that the multiplexing gain [38] is 1/2 in bits/sec/Hz/(3 dB), which is given by…”
Section: Ergodic Secrecy Ratementioning
confidence: 66%
“…As an alternative to deriving exact analytical results, some works focus on extracting parameters that characterize the channel capacity under extreme SNR scenarios (see [3] - [4] for more details on the extreme SNR characterization). The low-SNR regime is characterized through the minimum transmit E b /N 0 that enables reliable communications, i.e., E b /N 0 min , and the low-SNR spectral efficiency slope S 0 .…”
Section: Selected Prior Workmentioning
confidence: 99%