Publication

Bounds on the capacity region of a class of interference channels

Emre Telatar
2007
Conference Papers

Abstract

We prove a new outer bound to the capacity region of a certain class of interference channels, and quantify the gap between it and the Han-Kobayashi inner bound. The new bound allows the recovery of the El Gamal-Costa characterization of the capacity region of certain deterministic interference channels, and also the recent characterization by Etkin, Tse and Wang of the capacity region of scalar Gaussian interference channels to within '1 bit'. Moreover, the new bound allows a straightforward generalization of the '1 bit' result to vector Gaussian interference channels.

Official source

https://infoscience.epfl.ch/entities/publication/fdd270af-3a1b-47c5-b59a-bb61b57fd4db

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Emre Telatar
2007
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fdd270af-3a1b-47c5-b59a-bb61b57fd4db

About this result

Related concepts (8)

Orthogonal frequency-division multiplexing

In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital (binary) data on multiple carrier frequencies. OFDM has developed into a popular scheme for wideband digital communication, used in applications such as digital television and audio broadcasting, DSL internet access, wireless networks, power line networks, and 4G/5G mobile communications. OFDM is a frequency-division multiplexing (FDM) scheme that was introduced by Robert W.

Interference (communication)

In telecommunications, an interference is that which modifies a signal in a disruptive manner, as it travels along a communication channel between its source and receiver. The term is often used to refer to the addition of unwanted signals to a useful signal. Common examples include: Electromagnetic interference (EMI) Co-channel interference (CCI), also known as crosstalk Adjacent-channel interference (ACI) Intersymbol interference (ISI) Inter-carrier interference (ICI), caused by doppler shift in OFDM modulation (multitone modulation).

Additive white Gaussian noise

Additive white Gaussian noise (AWGN) is a basic noise model used in information theory to mimic the effect of many random processes that occur in nature. The modifiers denote specific characteristics: Additive because it is added to any noise that might be intrinsic to the information system. White refers to the idea that it has uniform power spectral density across the frequency band for the information system. It is an analogy to the color white which may be realized by uniform emissions at all frequencies in the visible spectrum.