Results 1 to 10 of about 1,319,177 (129)
Optimal Power Allocation over Multiple Identical Gilbert-Elliott Channels [PDF]
arXiv, 2013 We study the fundamental problem of power allocation over multiple Gilbert-Elliott communication channels. In a communication system with time varying channel qualities, it is important to allocate the limited transmission power to channels that will be in good state.
Krishnamachari, Bhaskar +2 more
arxiv +3 more sources
Optimal Bandwidth and Power Allocation for Sum Ergodic Capacity under Fading Channels in Cognitive Radio Networks [PDF]
X. Gong, S.A. Vorobyov, C. Tellambura, "Optimal bandwidth and
power allocation for sum ergodic capacity under fading channels in cognitive
radio networks," IEEE Trans. Signal Processing, vol. 59, no. 4, pp.
1814-1826, Apr. 2011, 2010 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 access scheme. The sum ergodic capacity of all the SUs is taken as the performance metric of the network.
Gong, Xiaowen +2 more
arxiv +3 more sources
Power Allocation for the Base Matrix of Spatially Coupled Sparse Regression Codes [PDF]
arXiv, 2023 We investigate power allocation for the base matrix of a spatially coupled sparse regression code (SC-SPARC) for reliable communications over an additive white Gaussian noise channel. A conventional SC-SPARC allocates power uniformly to the non-zero entries of its base matrix.
arxiv
Study of Robust Adaptive Power Allocation Techniques for Rate Splitting based MU-MIMO systems [PDF]
arXiv, 2022 Rate splitting (RS) systems can better deal with imperfect channel state information at the transmitter (CSIT) than conventional approaches. However, this requires an appropriate power allocation that often has a high computational complexity, which might be inadequate for practical and large systems.
arxiv
On the Power Allocation Limits for Downlink Multi-user NOMA with QoS [PDF]
Proceedings of the International Conference on Communications
(ICC), 2018, 2018 The fundamental power allocation requirements for NOMA systems with minimum quality of service (QoS) requirements are investigated. For any minimum QoS rate $R_0$, the limits on the power allocation coefficients for each user are derived, such that any power allocation coefficient outside of these limits creates an outage with probability equal to 1 ...
arxiv +1 more source
Optimal Power Allocation for HARQ Schemes over Time-Correlated Nakagami-m Fading Channels [PDF]
arXiv, 2022 This paper investigates the problem of power allocation for hybrid automatic repeat request (HARQ) schemes over time-correlated Nakagami-m fading channels under outage constraint. The presence of time correlation complicates the power allocation problem due to the involvement of multiple correlated fading channels.
arxiv
Power Allocation for Relayed OFDM with Index Modulation Assisted by Artificial Neural Network [PDF]
, 2020 In this letter, we propose a power allocation scheme for relayed orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems. The proposed power allocation scheme replies on artificial neural network (ANN) and deep learning to allocate transmit power among various subcarriers at the source and relay nodes.
arxiv +1 more source
On Optimal Power Allocation for Downlink Non-Orthogonal Multiple Access Systems [PDF]
, 2017 Non-orthogonal multiple access (NOMA) enables power-domain multiplexing via successive interference cancellation (SIC) and has been viewed as a promising technology for 5G communication. The full benefit of NOMA depends on resource allocation, including power allocation and channel assignment, for all users, which, however, leads to mixed integer ...
arxiv +1 more source
Robust Power Allocation and Linear Precoding for Cell-Free and Multi-Cell Massive MIMO Systems [PDF]
arXiv, 2022 Multi-Cell (MC) systems are present in mobile network operations from the first generation to the fifth generation of wireless networks, and considers the signals of all users to a base station (BS) centered in a cell. Cell-Free (CF) systems works with a large number of distributed antennas serving users at the same time.
arxiv
Optimum Power and Rate Allocation for Coded V-BLAST: Average Optimization [PDF]
, 2010 An analytical framework for performance analysis and optimization of coded V-BLAST is developed. Average power and/or rate allocations to minimize the outage probability as well as their robustness and dual problems are investigated. Compact, closed-form expressions for the optimum allocations and corresponding system performance are given. The uniform
arxiv +1 more source