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We study the problem of scheduling jobs on fault-prone machines communicating via a shared channel, also known as multiple-access channel. We have $n$ arbitrary length jobs to be scheduled on $m$ identical machines, $f$ of which are prone…

分布式、并行与集群计算 · 计算机科学 2018-07-26 Marek Klonowski , Dariusz R. Kowalski , Jarosław Mirek , Prudence W. H. Wong

We investigate the scheduling of a common resource between several concurrent users when the feasible transmission rate of each user varies randomly over time. Time is slotted and users arrive and depart upon service completion. This may…

性能 · 计算机科学 2015-03-18 U. Ayesta , M. Erausquin , M. Jonckheere , I. M. Verloop

This paper studies the impact of transmit antenna selection on the secrecy performance of massive MIMO wiretap channels. We consider a scenario in which a multi-antenna transmitter selects a subset of transmit antennas with the strongest…

信息论 · 计算机科学 2017-09-07 Saba Asaad , Ali Bereyhi , Ralf R. Müller , Rafael F. Schaefer , Amir M. Rabiei

This paper presents a study on multiple-antenna interference channels, accounting for general overhead as a function of the number of users and antennas in the network. The model includes both perfect and imperfect channel state information…

信息论 · 计算机科学 2012-02-09 Steven W. Peters , Robert W. Heath

In wireless fading channels, multi-user scheduling has the potential to boost the spectral efficiency by exploiting diversity gains. In this regard, proportional fair (PF) scheduling provides a solution for increasing the users' quality of…

网络与互联网体系结构 · 计算机科学 2016-11-17 R. Fritzsche , P. Rost , G. Fettweis

The performance of systems where multiple users communicate over wireless fading links benefits from channel-adaptive allocation of the available resources. Different from most existing approaches that allocate resources based on perfect…

信息论 · 计算机科学 2009-09-07 Antonio G. Marques , Georgios B. Giannakis , Javier Ramos

We investigate the capacity scaling of MIMO systems with the system dimensions. To that end, we quantify how the mutual information varies when the number of antennas (at either the receiver or transmitter side) is altered. For a system…

信息论 · 计算机科学 2018-03-06 Burak Çakmak , Ralf R. Müller , Bernard H. Fleury

This paper considers a sequential estimation and sensor scheduling problem in the presence of multiple communication channels. As opposed to the classical remote estimation problem that involves one perfect (noiseless) channel and one…

信息论 · 计算机科学 2015-10-02 Xiaobin Gao , Emrah Akyol , Tamer Basar

We consider a multiuser system where a single transmitter equipped with multiple antennas (the base station) communicates with multiple users each with a single antenna. Regularized channel inversion is employed as the precoding strategy at…

信息论 · 计算机科学 2013-07-18 Rusdha Muharar , Randa Zakhour , Jamie Evans

Base stations with a large number of transmit antennas have the potential to serve a large number of users at high rates. However, the receiver processing in the uplink relies on channel estimates which are known to suffer from pilot…

信息论 · 计算机科学 2016-11-18 Narayanan Krishnan , Roy D. Yates , Narayan B. Mandayam

In this work, salient characteristics of a wireless communication system deploying a great number of antennas in the base station (BS), namely Massive MIMO system, are investigated. In particular, we found a simple and meaningful…

网络与互联网体系结构 · 计算机科学 2014-06-17 José Carlos Marinello , Taufik Abrão

In time-varying wireless networks, the states of the communication channels are subject to random variations, and hence need to be estimated for efficient rate adaptation and scheduling. The estimation mechanism possesses inaccuracies that…

网络与互联网体系结构 · 计算机科学 2010-10-05 Wenzhuo Ouyang , Sugumar Murugesan , Atilla Eryilmaz , Ness B. Shroff

In this paper, we investigated the capacity and bit error rate (BER) performance of Multiple Input Multiple Output (MIMO) satellite systems with single and multiple dual polarized satellites in geostationary orbit and a mobile ground…

信息论 · 计算机科学 2014-08-12 Ramoni Adeogun

Transceiver impairments, including phase noise, residual frequency offset, and imperfect channel estimation, significantly affect the performance of Multiple-Input Multiple-Output (MIMO) system. However, these impairments are not well…

网络与互联网体系结构 · 计算机科学 2010-04-13 Pengkai Zhao , Babak Daneshrad

Co-channel interference poses a challenge in any wireless communication network where the time-frequency resources are reused over different geographical areas. The interference is particularly diverse in cell-free massive multiple-input…

信号处理 · 电气工程与系统科学 2024-04-19 Mahmoud Zaher , Emil Björnson , Marina Petrova

The millimetre-wave spectrum provisions enormous enhancement to the achievable data rate of 5G networks. However, human blockages affecting the millimetre-wave signal can severely degrade the performance if proper resource allocation is not…

信息论 · 计算机科学 2020-07-28 Fadhil Firyaguna , Andrea Bonfante , Jacek Kibiłda , Nicola Marchetti

The channel feedback overhead for massive MIMO systems with a large number of base station (BS) antennas is very high, since the number of feedback bits of traditional codebooks scales linearly with the number of BS antennas. To reduce the…

信息论 · 计算机科学 2017-01-23 Wenqian Shen , Linglong Dai , Yu Zhang , Zhaocheng Wang

In a multicell multiuser MIMO downlink employing random beamforming as the transmission scheme, the heterogeneous large scale channel effects of intercell and intracell interference complicate analysis of distributed scheduling based…

信息论 · 计算机科学 2013-06-11 Yichao Huang , Bhaskar D. Rao

In this paper, we analyze the asymptotic performance of multiple antenna channels where the transmitter has either perfect or finite bit channel state information. Using the diversity-multiplexing tradeoff to characterize the system…

信息论 · 计算机科学 2007-07-13 Ahmad Khoshnevis , Ashutosh Sabharwal

In this paper, we analyze the asymptotic rate for a multi-carrier (MC) full-duplex (FD) massive multiple input multiple output (mMIMO) decode and forward (DF) relay system which serves multiple MC single-antenna half-duplex (HD) nodes. We…

信息论 · 计算机科学 2020-11-18 Vimal Radhakrishnan , Omid Taghizadeh , Rudolf Mathar