#### Filter Results:

- Full text PDF available (161)

#### Publication Year

2000

2017

- This year (9)
- Last 5 years (91)
- Last 10 years (181)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Brain Region

#### Cell Type

#### Key Phrases

#### Method

#### Organism

Learn More

- Bobak Nazer, Michael Gastpar
- IEEE Transactions on Information Theory
- 2011

Interference is usually viewed as an obstacle to communication in wireless networks. This paper proposes a new strategy, compute-and-forward, that exploits interference to obtain significantly higher rates between users in a network. The key idea is that relays should decode linear functions of transmitted messages according to their observed channel… (More)

- Michael Gastpar, Pier Luigi Dragotti, Martin Vetterli
- IEEE Workshop on Multimedia Signal Processing
- 2002

The Karhunen-Lò eve transform (KLT) is a key element of many signal processing and communication tasks. Many recent applications involve distributed signal processing , where it is not generally possible to apply the KLT to the entire signal ; rather , the KLT must be approximated in a distributed fashion. This paper investigates such distributed approaches… (More)

- Bobak Nazer, Syed Ali Jafar, Michael Gastpar, Sriram Vishwanath
- IEEE Transactions on Information Theory
- 2009

This paper develops a new communication strategy, ergodic interference alignment, for the <i>K</i>-user interference channel with time-varying fading. At any particular time, each receiver will see a superposition of the transmitted signals plus noise. The standard approach to such a scenario results in each transmitter-receiver pair achieving a rate… (More)

- Bobak Nazer, Michael Gastpar
- IEEE Transactions on Information Theory
- 2007

The problem of reliably reconstructing a function of sources over a multiple-access channel (MAC) is considered. It is shown that there is no source-channel separation theorem even when the individual sources are independent. Joint source-channel strategies are developed that are optimal when the structure of the channel probability transition matrix and… (More)

- Michael Gastpar, Martin Vetterli
- INFOCOM
- 2002

— In [1], Gupta and Kumar determined the capacity of wireless networks under certain assumptions, among them point-to-point coding, which excludes for example multi-access and broadcast codes. In this paper, we consider essentially the same physical model of a wireless network under a different traffic pattern, namely the relay traffic pattern, but we allow… (More)

- Michael Gastpar, Bixio Rimoldi, Martin Vetterli
- IEEE Trans. Information Theory
- 2003

—What makes a source–channel communication system optimal? It is shown that in order to achieve an optimal cost–distortion tradeoff, the source and the channel have to be matched in a probabilistic sense. The match (or lack of it) involves the source distribution, the distortion measure, the channel conditional distribution, and the channel input cost… (More)

- Jiening Zhan, Bobak Nazer, Uri Erez, Michael Gastpar
- IEEE Transactions on Information Theory
- 2010

Linear receivers are often used to reduce the implementation complexity of multiple-antenna systems. In a traditional linear receiver architecture, the receive antennas are used to separate out the codewords sent by each transmit antenna, which can then be decoded individually. Although easy to implement, this approach can be highly suboptimal when the… (More)

- Michael Gastpar
- 2007 Information Theory and Applications Workshop
- 2007

One of the simplest sensor network models has one single underlying Gaussian source of interest, observed by many sensors, subject to independent Gaussian observation noise. The sensors communicate over a standard Gaussian multiple-access channel to a fusion center whose goal is to estimate the underlying source with respect to mean-squared error. In this… (More)

- Michael Gastpar
- IEEE Transactions on Information Theory
- 2007

Capacity is often studied under constraints on the channel input signals. This paper investigates the behavior of capacity when constraints are placed on the channel output signal (as well as generalizations thereof). While such a change in perspective leaves the point-to-point problem (essentially) unchanged, the main conclusion is that in certain network… (More)

- Bobak Nazer, Michael Gastpar
- Proceedings of the IEEE
- 2011

—When two or more users in a wireless network transmit simultaneously, their electromagnetic signals are linearly superimposed on the channel. As a result, a receiver that is interested in one of these signals sees the others as unwanted interference. This property of the wireless medium is typically viewed as a hindrance to reliable communication over a… (More)