Results 21 to 30 of about 548,965 (280)
Green communication via Type-I ARQ: Finite block-length analysis [PDF]
, 2014 This paper studies the effect of optimal power allocation on the performance of communication systems utilizing automatic repeat request (ARQ). Considering Type-I ARQ, the problem is cast as the minimization of the outage probability subject to an ...
Makki, Behrooz +2 more
core +2 more sources
Optimal Power Allocation in Multiuser OFDM Systems [PDF]
GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2004 Multiuser orthogonal frequency division multiplexing (MU-OFDM) is a promising technique for achieving high downlink capacities in future cellular systems. A key issue in MU-OFDM is the allocation of the OFDM subcarriers and power among users sharing the channel. Previous allocation algorithms cannot ensure fairness in advance.
null Zukang Shen +2 more
openaire +1 more source
Limited-Feedback-Based Channel-Aware Power Allocation for Linear Distributed Estimation [PDF]
, 2013 This paper investigates the problem of distributed best linear unbiased estimation (BLUE) of a random parameter at the fusion center (FC) of a wireless sensor network (WSN).
Fanaei, Mohammad +2 more
core +1 more source
Suboptimal greedy power allocation schemes for discrete bit loading [PDF]
, 2013 In this paper we consider low cost discrete bit loading based on greedy power allocation (GPA) under the constraints of total transmit power budget, target BER, and maximum permissible QAM modulation order.
Alhanafy, Waleed Eid Abdelrahman +1 more
core +3 more sources
EURASIP Journal on Wireless Communications and Networking, 2009 The power allocation problem for multiuser wireless networks is considered under the assumption of amplify-and-forward cooperative diversity. Specifically, optimal centralized and distributed power allocation strategies with and without minimum rate ...
Le LongBao +3 more
doaj +2 more sources
IEEE Access, 2020 This paper investigates the optimal training duration and the optimal power allocation for the training and the data transmission that maximize the ergodic sum rate in single-cell uplink massive MIMO with MMSE receivers.
Rusdha Muharar
doaj +1 more source
Power Allocation Based on SEP Minimization in Two-Hop Decode-and-Forward Relay Networks [PDF]
, 2011 The problem of optimal power allocation among the relays in a two-hop decode-and-forward cooperative relay network with independent Rayleigh fading channels is considered.
Arash Khabbazibasmenj +3 more
core +1 more source
Power Allocation Algorithm Minimizing Outage Probability in Cognitive Radio Relay Network [PDF]
Jisuanji gongcheng, 2017 To improve the outage performance of cognitive radio relay network,this paper proposes a power allocation algorithm minimizing outage probability by analyzing the system outage probability and user power allocation conditions.It presents the mathematical
ZHU Chunhua,ZHOU Yuping,CHEN Baoxing,ZHU Quan
doaj +1 more source
On Resource Allocation in Fading Multiple Access Channels - An Efficient Approximate Projection Approach [PDF]
, 2008 We consider the problem of rate and power allocation in a multiple-access channel. Our objective is to obtain rate and power allocation policies that maximize a general concave utility function of average transmission rates on the information theoretic ...
Eryilmaz, Atilla +3 more
core +3 more sources
MIMO Transceivers With Decision Feedback and Bit Loading: Theory and Optimization [PDF]
, 2010 This paper considers MIMO transceivers with linear precoders and decision feedback equalizers (DFEs), with bit allocation at the transmitter. Zero-forcing (ZF) is assumed.
Chen, Chun-Yang +2 more
core +2 more sources