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In this paper, the ergodic sum-rate of a fading cognitive multiple access channel (C-MAC) is studied, where a secondary network (SN) with multiple secondary users (SUs) transmitting to a secondary base station (SBS) shares the spectrum band…

Information Theory · Computer Science 2014-03-04 Xin Kang , Hon Fah Chong , Yeow-Khiang Chia , Sumei Sun

Power allocation with peak-to-average power ratio constraints is investigated for transmission over Nakagami-m fading channels with arbitrary input distributions. In the case of delay-limited block-fading channels, we find the solution to…

Information Theory · Computer Science 2008-02-26 Khoa D. Nguyen , Albert Guillen i Fabregas , Lars K. Rasmussen

In this paper, the ergodic sum-rate and outage probability of a downlink single-antenna channel with K users are analyzed in the presence of Rayleigh flat fading, where limited channel state information (CSI) feedback is assumed.…

Information Theory · Computer Science 2010-01-12 Bo Niu , Osvaldo Simeone , Oren Somekh , Alexander M. Haimovich

Handling interference is one of the main challenges in the design of wireless networks. In this paper we study the application of cooperation for interference management in the weak interference (WI) regime, focusing on the Z-interference…

Information Theory · Computer Science 2017-03-08 Daniel Zahavi , Ron Dabora

The prospect of base station (BS) cooperation leading to joint combining at widely separated antennas has led to increased interest in macrodiversity systems, where both sources and receive antennas are geographically distributed. In this…

Information Theory · Computer Science 2012-09-21 Dushyantha A. Basnayaka , Peter J. Smith , Phillipa A. Martin

We investigate a single-particle in one-dimensional Wannier-Stark ladders with either a linear potential or a mosaic potential with spacing $\kappa=2$. In both cases, we exactly determine the critical energies separating the weakly ergodic…

Disordered Systems and Neural Networks · Physics 2024-04-16 Xingbo Wei , Liangqing Wu , Kewei Feng , Tong Liu , Yunbo Zhang

The generic behavior of quantum systems has long been of theoretical and practical interest. Any quantum process is represented by a sequence of quantum channels. We consider general ergodic sequences of stochastic channels with arbitrary…

Quantum Physics · Physics 2022-07-08 Ramis Movassagh , Jeffrey Schenker

This paper studies optimal bandwidth and power allocation in a cognitive radio network where multiple secondary users (SUs) share the licensed spectrum of a primary user (PU) under fading channels using the frequency division multiple…

Information Theory · Computer Science 2015-05-19 Xiaowen Gong , Sergiy A. Vorobyov , Chintha Tellambura

In this letter, we consider a communication scenario, where the transmitter adopts different power adaption methods according to the instantaneous channel state to enhance the ergodic capacity (EC) over Fisher-Snedecor F fading channels. We…

Signal Processing · Electrical Eng. & Systems 2019-02-08 Hui Zhao , Liang Yang , Ahmed S. Salem , Mohamed-Slim Alouini

In multi-(core/mode) optical fiber communication, the transmission channel can be modeled as a complex sub-matrix of the Haar-distributed unitary matrix (complex Jacobi unitary ensemble). In this letter, we present new analytical…

Information Theory · Computer Science 2017-06-07 Amor Nafkha , Remi Bonnefoi

Asymptotic comparisons of ergodic channel capacity at high and low signal-to-noise ratios (SNRs) are provided for several adaptive transmission schemes over fading channels with general distributions, including optimal power and rate…

Information Theory · Computer Science 2012-02-07 Yuan Zhang , Cihan Tepedelenlioglu

A central problem in the operation of large wireless networks is how to deal with interference -- the unwanted signals being sent by transmitters that a receiver is not interested in. This thesis looks at ways of combating such…

Information Theory · Computer Science 2011-09-07 Matthew Aldridge

In this correspondence, we analyze the ergodic capacity of a large uplink multi-user multiple-input multiple-output (MU-MIMO) system over generalized-$K$ fading channels. In the considered scenario, multiple users transmit their information…

Information Theory · Computer Science 2016-11-18 Ang Yang , Zunwen He , Chengwen Xing , Zesong Fei , Jingming Kuang

In this paper, we consider a two-hop amplify-and-forward (AF) relaying system, where the relay node is energy-constrained and harvests energy from the source node. In the literature, there are three main energy-harvesting (EH) protocols,…

Information Theory · Computer Science 2018-03-12 Galymzhan Nauryzbayev , Khaled M. Rabie , Mohamed Abdallah , Bamidele Adebisi

We investigate robust linear consensus over networks under capacity-constrained communication. The capacity of each edge is encoded as an upper bound on the number of state variables that can be communicated instantaneously. When the edge…

Systems and Control · Electrical Eng. & Systems 2021-05-25 Yasin Yazicioglu , Alberto Speranzon

We propose new ergodic interference alignment techniques for $K$-user interference channels with delayed feedback. Two delayed feedback scenarios are considered -- delayed channel information at transmitter (CIT) and delayed output…

Information Theory · Computer Science 2013-03-14 Myung Gil Kang , Wan Choi

Consider a stochastic nonlinear system controlled over a possibly noisy communication channel. An important problem is to characterize the largest class of channels for which there exist coding and control policies so that the closed-loop…

Optimization and Control · Mathematics 2021-02-11 Nicolas Garcia , Christoph Kawan , Serdar Yuksel

Effective capacity (EC) determines the maximum communication rate subject to a particular delay constraint. In this work, we analyze the EC of ultra reliable Machine Type Communication (MTC) networks operating in the finite blocklength (FB)…

Information Theory · Computer Science 2020-03-26 Mohammad Shehab , Hirley Alves , Matti Latva-aho

Ergodic capacity and average bit error rate have been widely used to compare the performance of different wireless communication systems. As such recent scientific research and studies revealed strong impact of designing and implementing…

Information Theory · Computer Science 2012-01-06 Ferkan Yilmaz , Mohamed-Slim Alouini

The sum-capacity of a three user interference wired network for time-varying channels is considered. Due to the channel variations, it is assumed that the transmitters are only able to track the connectivity between the individual nodes,…

Information Theory · Computer Science 2014-05-01 Soheil Gherekhloo , Anas Chaaban , Aydin Sezgin