Higher-Order Asymptotics of Mutual Information for Nonlinear Channels with Non-Gaussian Noise
Problems of Information Transmission
Bit-Interleaved Coded Modulation
Foundations and Trends in Communications and Information Theory
Optimal constellations for the low-SNR noncoherent MIMO block Rayleigh-fading channel
IEEE Transactions on Information Theory
Low-SNR capacity of noncoherent fading channels
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Mismatched estimation and relative entropy
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Analysis of 1-bit output noncoherent fading channels in the low SNR regime
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Capacity bounds for peak-constrained multiantenna wideband channels
IEEE Transactions on Communications
Noncoherent capacity of underspread fading channels
IEEE Transactions on Information Theory
Mismatched estimation and relative entropy
IEEE Transactions on Information Theory
On MIMO detection under non-gaussian target scattering
IEEE Transactions on Information Theory
Corrections to "bit-interleaved coded modulation in the wideband regime"
IEEE Transactions on Information Theory
| Hi-index | 755.26 |
A formula for the second-order expansion of the input-output mutual information of multidimensional channels as the signal-to-noise ratio (SNR) goes to zero is obtained. While the additive noise is assumed to be Gaussian, we deal with very general classes of input and channel distributions. As special cases, these channel models include fading channels, channels with random parameters, and channels with almost Gaussian noise. When the channel is unknown at the receiver, the second term in the asymptotic expansion depends not only on the covariance matrix of the input signal but also on the fourth mixed moments of its components. The study of the second-order asymptotics of mutual information finds application in the analysis of the bandwidth-power tradeoff achieved by various signaling strategies in the wideband regime.