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- Giuseppe Caire, Shlomo Shamai
- IEEE Transactions on Information Theory
- 2003

A Gaussian broadcast channel (GBC) with r single-antenna receivers and t antennas at the transmitter is considered. Both transmitter and receivers have perfect knowledge of the channel. Despite its apparent simplicity, this model is, in general, a nondegraded broadcast channel (BC), for which the capacity region is not fully known. For the two-user case, we… (More)

- Hanan Weingarten, Yossef Steinberg, Shlomo Shamai
- IEEE Transactions on Information Theory
- 2006

The Gaussian multiple-input multiple-output (MIMO) broadcast channel (BC) is considered. The dirty-paper coding (DPC) rate region is shown to coincide with the capacity region. To that end, a new notion of an enhanced broadcast channel is introduced and is used jointly with the entropy power inequality, to show that a superposition of Gaussian codes is… (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)

- David Gesbert, Stephen V. Hanly, Howard C. Huang, Shlomo Shamai, Osvaldo Simeone, Wei Yu
- IEEE Journal on Selected Areas in Communications
- 2010

This paper presents an overview of the theory and currently known techniques for multi-cell MIMO (multiple input multiple output) cooperation in wireless networks. In dense networks where interference emerges as the key capacitylimiting factor, multi-cell cooperation can dramatically improve the system performance. Remarkably, such techniques literally… (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)

- Ami Wiesel, Yonina C. Eldar, Shlomo Shamai
- IEEE Transactions on Signal Processing
- 2006

In this paper, the problem of designing linear precoders for fixed multiple-input-multiple-output (MIMO) receivers is considered. Two different design criteria are considered. In the first, the transmitted power is minimized subject to signal-to-interference-plus-noise-ratio (SINR) constraints. In the second, the worst case SINR is maximized subject to a… (More)

- Ram Zamir, Shlomo Shamai, Uri Erez
- IEEE Trans. Information Theory
- 2002

Network information theory promises high gains over simple point-to-point communication techniques, at the cost of higher complexity. However, lack of structured coding schemes limited the practical application of these concepts so far. One of the basic elements of a network code is the binning scheme. Wyner and other researchers proposed various forms of… (More)

- Ibrahim C. Abou-Faycal, Mitchell D. Trott, Shlomo Shamai
- IEEE Trans. Information Theory
- 2001

We consider transmission over a discrete-time Rayleigh fading channel, in which successive symbols face independent fading, and where neither the transmitter nor the receiver has channel state information. Subject to an average power constraint, we study the capacity-achieving distribution of this channel and prove it to be discrete with a finite number of… (More)

- Ezio Biglieri, John G. Proakis, Shlomo Shamai
- IEEE Trans. Information Theory
- 1998

In this paper we review the most peculiar and interesting information-theoretic and communications features of fading channels. We first describe the statistical models of fading channels which are frequently used in the analysis and design of communication systems. Next, we focus on the information theory of fading channels, by emphasizing capacity as the… (More)

- Giuseppe Caire, Shlomo Shamai
- IEEE Trans. Information Theory
- 1999

In this paper we study the capacity of some channels whose conditional output probability distribution depends on a state process independent of the channel input and where channel state information (CSI) signals are available both at the transmitter (CSIT) and at the receiver (CSIR). When the channel state and the CSI signals are jointly i.i.d., the… (More)