Showing 2011 · cs.ITShow all

13 papers · 2 filters

cs.IT2011★ 3 cited

Unitary Precoding and Basis Dependency of MMSE Performance for Gaussian Erasure Channels

Ayça Özçelikkale, Serdar Yüksel, Haldun M. Ozaktas

We consider the transmission of a Gaussian vector source over a multi-dimensional Gaussian channel where a random or a fixed subset of the channel outputs are erased. Within the se…

cs.IT2011★ 12 cited

On Optimum Causal Cognitive Spectrum Reutilization Strategy

Kasra Haghighi, Erik G. Ström, Erik Agrell

In this paper we study opportunistic transmission strategies for cognitive radios (CR) in which causal noisy observation from a primary user(s) (PU) state is available. PU is assum…

cs.IT2011★ 3 cited

Capacity Pre-Log of SIMO Correlated Block-Fading Channels

Wei Yang, Giuseppe Durisi, Veniamin I. Morgenshtern +1

We establish an upper bound on the noncoherent capacity pre-log of temporally correlated block-fading single-input multiple-output (SIMO) channels. The upper bound matches the lowe…

cs.IT2011★ 30 cited

Bandlimited Intensity Modulation

Mehrnaz Tavan, Erik Agrell, Johnny Karout

In this paper, the design and analysis of a new bandwidth-efficient signaling method over the bandlimited intensity-modulated direct-detection (IM/DD) channel is presented. The cha…

cs.IT2011★ 35 cited

The Channel Capacity Increases with Power

Erik Agrell

It is proved that for memoryless vector channels, maximizing the mutual information over all source distributions with a certain average power or over the larger set of source dist…

cs.IT2011

On the Sensitivity of Continuous-Time Noncoherent Fading Channel Capacity

Giuseppe Durisi, Veniamin I. Morgenshtern, Helmut Bölcskei

The noncoherent capacity of stationary discrete-time fading channels is known to be very sensitive to the fine details of the channel model. More specifically, the measure of the s…

cs.IT2011★ 58 cited

Optimizing Constellations for Single-Subcarrier Intensity-Modulated Optical Systems

Johnny Karout, Erik Agrell, Krzysztof Szczerba +1

We optimize modulation formats for the additive white Gaussian noise channel with nonnegative input, also known as the intensity-modulated direct-detection channel, with and withou…

cs.IT2011★ 6 cited

Noncoherent SIMO Pre-Log via Resolution of Singularities

Erwin Riegler, Veniamin I. Morgenshtern, Giuseppe Durisi +3

We establish a lower bound on the noncoherent capacity pre-log of a temporally correlated Rayleigh block-fading single-input multiple-output (SIMO) channel. Our result holds for ar…

cs.IT2011

High-SNR Capacity of Wireless Communication Channels in the Noncoherent Setting: A Primer

Giuseppe Durisi, Helmut Bölcskei

This paper, mostly tutorial in nature, deals with the problem of characterizing the capacity of fading channels in the high signal-to-noise ratio (SNR) regime. We focus on the prac…

cs.IT2011★ 8 cited

Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems

Johnny Karout, Erik Agrell, Krzysztof Szczerba +1

We optimize modulation formats for the additive white Gaussian noise channel with a nonnegative input constraint, also known as the intensity-modulated direct detection channel, wi…

cs.IT2011★ 6 cited

Minimum Pseudoweight Analysis of 3-Dimensional Turbo Codes

Eirik Rosnes, Michael Helmling, Alexandre Graell i Amat

In this work, we consider pseudocodewords of (relaxed) linear programming (LP) decoding of 3-dimensional turbo codes (3D-TCs). We present a relaxed LP decoder for 3D-TCs, adapting…

cs.IT2011★ 43 cited

Uncertainty Relations and Sparse Signal Recovery for Pairs of General Signal Sets

Patrick Kuppinger, Giuseppe Durisi, Helmut Bölcskei

We present an uncertainty relation for the representation of signals in two different general (possibly redundant or incomplete) signal sets. This uncertainty relation is relevant…

cs.IT2011

Errata list for "Error Control Coding" by Lin and Costello

Erik Agrell

This document lists some errors found in the second edition of Error Control Coding by Shu Lin and Daniel J. Costello, Jr.