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- Sergio Verdú
- IEEE Trans. Information Theory
- 2002

The tradeoff of spectral efficiency (b/s/Hz) versus energy-per-information bit is the key measure of channel capacity in the wideband power-limited regime. This paper finds the fundamental bandwidth–power tradeoff of a general class of channels in the wideband regime characterized by low, but nonzero, spectral efficiency and energy per bit close to the… (More)

- Yury Polyanskiy, H. Vincent Poor, Sergio Verdú
- IEEE Transactions on Information Theory
- 2010

This paper investigates the maximal channel coding rate achievable at a given blocklength and error probability. For general classes of channels new achievability and converse bounds are given, which are tighter than existing bounds for wide ranges of parameters of interest, and lead to tight approximations of the maximal achievable rate for blocklengths… (More)

- Sergio Verdú
- IEEE Trans. Information Theory
- 1986

- Antonia Maria Tulino, Sergio Verdú
- Foundations and Trends in Communications and…
- 2004

Random matrix theory has found many applications in physics, statistics and engineering since its inception. Although early developments were motivated by practical experimental problems, random matrices are now used in fields as diverse as Riemann hypothesis, stochastic differential equations, condensed matter physics, statistical physics, chaotic systems,… (More)

- Sergio Verdú, Te Sun Han
- IEEE Trans. Information Theory
- 1994

Abrlracr-A h u l a for the cppecity et arbitrary sbgle-wer chrurwla without feedback (mot neccgdueily Wium" stable, stationary, etc.) is proved. Capacity ie shown to e i p l the supremum, over all input processts, & the input-outpat infiqjknda QBnd as the llnainl ia praabiutJr d the normalized information density. The key to thir zbllljt is a ntw a"c sppmrh… (More)

- Dongning Guo, Shlomo Shamai, Sergio Verdú
- IEEE Transactions on Information Theory
- 2005

This paper deals with arbitrarily distributed finite-power input signals observed through an additive Gaussian noise channel. It shows a new formula that connects the input-output mutual information and the minimum mean-square error (MMSE) achievable by optimal estimation of the input given the output. That is, the derivative of the mutual information… (More)

- Ruxandra Lupas, Sergio Verdú
- IEEE Trans. Information Theory
- 1989

In code-division multiple-access systems, simultaneous multiuser accessing of a common channel is made possible by assigning a signature waveform to each user. Knowledge of these waveforms enables the receiver to demodulate the data streams of each user, upon observation of the sum of the transmitted signals, perturbed by additive noise. Under the… (More)

- Sergio Verdú, Shlomo Shamai
- IEEE Trans. Information Theory
- 1999

The CDMA channel with randomly and independently chosen spreading sequences accurately models the situation where pseudonoise sequences span many symbol periods. Furthermore, its analysis provides a comparison baseline for CDMA channels with deterministic signature waveforms spanning one symbol period. We analyze the spectral efficiency (total capacity per… (More)

- Te Sun Han, Sergio Verdú
- IEEE Trans. Information Theory
- 1993

Given a channel and an input process we study the minimum randomness of those input processes whose output statistics approximate the original output statistics with arbitrary accuracy. We introduce the notion of resolvability of a channel, defined as the number of random bits required per channel use in order to generate an input that achieves arbitrarily… (More)

- Dongning Guo, Sergio Verdú
- IEEE Transactions on Information Theory
- 2005

This paper studies randomly spread code-division multiple access (CDMA) and multiuser detection in the large-system limit using the replica method developed in statistical physics. Arbitrary input distributions and flat fading are considered. A generic multiuser detector in the form of the posterior mean estimator is applied before single-user decoding. The… (More)