Filters








9,927 Hits in 8.0 sec

On Minimizing the MSE in the Presence of Channel State Information Errors

Gabor Fodor, Piergiuseppe Di Marco, Miklos Telek
2015 IEEE Communications Letters  
We consider the uplink of a multiuser multiple input multiple output (MU MIMO) system, in which the base station acquires channel state information (CSI) for which the estimation error depends on the resources  ...  For this system, we first derive the receiver that minimizes the mean square error (MSE) of the uplink detected data symbols, as opposed to the naïve receiver that does not minimize the MSE in the presence  ...  The MMSE receiver is initialized by the estimates of the channel state information rather than assuming the availability of perfect CSI.  ... 
doi:10.1109/lcomm.2015.2449317 fatcat:dixnm44lrfgchnqomfd4osuqhy

Channel Parameter Estimation in the Presence of Phase Noise Based on Maximum Correntropy Criterion [article]

Amir Alizadeh, Ghosheh Abed Hodtani
2021 arXiv   pre-print
state behavior; and (ii) improve the convergence rate by combining MSE and MCC as a novel mixed-LMS algorithm.  ...  We (i) analyze this phase noise channel estimation with information theoretic learning (ITL) criterion, i.e., maximum correntropy criterion (MCC), leading to robustness in the channel estimator's steady  ...  Color versions of one or more of the figures are in this article are available online at http://ieeexplore.ieee.org Channel Parameter Estimation in the Presence of Phase Noise Based on Maximum Correntropy  ... 
arXiv:2112.07955v1 fatcat:f4v6xbz3xvajfkedsxu5orwidq

Filter Design With Secrecy Constraints: The MIMO Gaussian Wiretap Channel

Hugo Reboredo, Joao Xavier, Miguel R. D. Rodrigues
2013 IEEE Transactions on Signal Processing  
We also provide generalizations of the filter designs from the scenario where the channel state is known to all the parties to the scenario where there is uncertainty in the channel state.  ...  In particular, we assess the efficacy of the designs in guaranteeing not only a certain MSE level at the eavesdropper, but also in limiting the error probability at the eavesdropper.  ...  ACKNOWLEDGMENT The authors thank the anonymous reviewers for their valuable comments and suggestions that significantly contributed to improving the quality of the paper. M. R. D.  ... 
doi:10.1109/tsp.2013.2262275 fatcat:qna4tiieg5a5ti5j3twhayehza

Over-the-Air Computation with Imperfect Channel State Information [article]

Yilong Chen, Guangxu Zhu, Jie Xu
2022 arXiv   pre-print
This paper investigates the effect of imperfect channel state information (CSI) on the over-the-air computation (AirComp) system, in which multiple wireless devices (WDs) send individual messages to one  ...  First, we consider the single-input single-output (SISO) case with each WD and AP equipped with one single antenna, in which the globally optimal solution to the computation MSE minimization problem is  ...  We study the optimized transceiver design in the presence of channel estimation errors, with the objective of minimizing the computation MSE, subject to the maximum power constraints at individual WDs.  ... 
arXiv:2202.13666v1 fatcat:ztixjbxljzblni2p4ooqc6dozy

Non-linear Transceiver Design for Broadcast Channels with Statistical Channel State Information

M. Botros Shenouda, T. N. Davidson
2007 2007 IEEE International Symposium on Signal Processing and Information Technology  
Motivated by the sensitivity of both broadcast channels system in the presence of uncertain channel state information and TH precoding to channel uncertainty, we design, herein, (CSI) at the base station  ...  We consider the design of Tomlinson-Harashima coding is particularly sensitive to inaccuracies in CSI, e.g., (TH) transceivers for the downlink of a multiuser communication [8].  ...  sr (20) CSI, we will also compare the performance of the statistically k=1 robust transceiver proposed in Section III with that of the Similar to scenarios in which channel state information is robust  ... 
doi:10.1109/isspit.2007.4458190 fatcat:4dxxrhkcifhl3itevd75t54vkq

A Convex Optimization Approach for the Robust Design of Multiuser and Multiantenna Downlink Communication Systems

Miquel Payaro, Antonio Pascual-Iserte, Jinhong Yuan, Miguel A. Lagunas
2006 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications  
In this work, we study a downlink communications scheme, focusing our attention on the case where the base station is equipped with multiple antennas and transmits information simultaneously to a certain  ...  In this context, we propose a robust power allocation technique that minimizes the transmitted power, while maintaining the necessary quality of service to obtain reliable communication links between the  ...  the MSE for i-th user in the presence of errors in the CSI is expressed below.  ... 
doi:10.1109/spawc.2006.346461 fatcat:ycj6poxrbzfylenozf7ykhbbu4

Design of block transceivers with decision feedback detection

Fang Xu, T.N. Davidson, Jian-Kang Zhang, K.M. Wong
2006 IEEE Transactions on Signal Processing  
In the MMSE case, the proposed design also maximizes the Gaussian mutual information and suggests that one can approach the capacity of the block transmission system using (independent instances of) the  ...  We provide closed-form expressions for transmitter-receiver pairs that simultaneously minimize the arithmetic mean squared error (MSE) at the decision point (assuming perfect feedback), the geometric MSE  ...  ACKNOWLEDGMENT The authors gratefully acknowledge the assistance of Scarlett Chan of McMaster University in the preparation of the simulation results reported in Section V-A, and that of Qian Meng of McMaster  ... 
doi:10.1109/tsp.2005.861779 fatcat:zaivl34evfhh3mglqp522jfoxq

Relay Precoder Optimization in MIMO-Relay Networks With Imperfect CSI

P. Ubaidulla, A. Chockalingam
2011 IEEE Transactions on Signal Processing  
The network consists of multiple source-destination node pairs assisted by a MIMO-relay node. The channel state information (CSI) available at the relay node is assumed to be imperfect.  ...  For this model, we propose a robust precoder design that minimizes total relay transmit power under constraints on MSEs at the destination nodes.  ...  Most of the works mentioned above assume the availability of perfect channel state information (CSI) at the relay node.  ... 
doi:10.1109/tsp.2011.2164401 fatcat:6atjfwgen5dcxddeppap6c5o4y

Transceiver design for sum-MSE optimization in MIMO-MAC with imperfect channel estimation

Patricia Layec, Pablo Piantanida, Raphael Visoz, Antoine O. Berthet
2008 2008 42nd Asilomar Conference on Signals, Systems and Computers  
Linear transceiver design for multiple access channels (MACs) with spatial correlation at both transmitter and receiver is investigated in the presence of inaccurate channel state information (CSI).  ...  Restricting the decoder to be linear yields to minimize of the sum-mean square error (sum-MSE) subject to individual power constraints.  ...  However, the benefits of multi-user MIMO highly depend on the type of channel state information (CSI) at both ends and on the level of accuracy of this information.  ... 
doi:10.1109/acssc.2008.5074417 fatcat:enm27qnlabfbtfnrfgdflyknym

Training placement for tracking fading channels

Min Dong, Lang Tong, Brian M. Sadler
2002 IEEE International Conference on Acoustics Speech and Signal Processing  
We use the minimum mean-square error (MMSE) estimator for channel tracking. A minmax approach is considered. We optimize the placement by minimizing the maximum MSE over a packet.  ...  The problem of training symbol placement in data packets for channel tracking is considered, where the channel is time-varying Rayleigh flat fading.  ...  The minimum mean-square error (MMSE) channel estimator is used for channel tracking. The presence of training symbols in the data stream makes MMSE of the channel estimator time varying.  ... 
doi:10.1109/icassp.2002.5745077 dblp:conf/icassp/DongTS02 fatcat:qhmldqko3zfshghqkltbw7z3u4

Training placement for tracking fading channels

Min Dong, Lang Tong, Sadler
2002 IEEE International Conference on Acoustics Speech and Signal Processing  
We use the minimum mean-square error (MMSE) estimator for channel tracking. A minmax approach is considered. We optimize the placement by minimizing the maximum MSE over a packet.  ...  The problem of training symbol placement in data packets for channel tracking is considered, where the channel is time-varying Rayleigh flat fading.  ...  The minimum mean-square error (MMSE) channel estimator is used for channel tracking. The presence of training symbols in the data stream makes MMSE of the channel estimator time varying.  ... 
doi:10.1109/icassp.2002.1005115 fatcat:edvdltjrr5cidpvwd4v7nat55u

Weighted-Sum-Rate-Maximizing Linear Transceiver Filters for the K-User MIMO Interference Channel [article]

Joonwoo Shin, Jaekyun Moon
2011 arXiv   pre-print
Our approach is based on extending the existing method of minimizing the weighted mean squared error (MSE) for the MIMO broadcast channel to the K-user interference channel at hand.  ...  A modified filter design is also presented which provides desired robustness in the presence of channel uncertainty  ...  Apparently, though, the error covariance matrix E k here is different from that of the broadcast channel due to the presence of multiple sources.  ... 
arXiv:1201.0110v1 fatcat:n3nhypztkrgnpgdezkwggxs7te

Weighted-Sum-Rate-Maximizing Linear Transceiver Filters for the K-User MIMO Interference Channel

Joonwoo Shin, Jaekyun Moon
2012 IEEE Transactions on Communications  
Our approach is based on extending the existing method of minimizing the weighted mean squared error (MSE) for the MIMO broadcast channel to the K-user interference channel at hand.  ...  A modified filter design is also presented which provides desired robustness in the presence of channel uncertainty.  ...  The weighted sum rate performances with imperfect channel state information (σ 2 Δ = 0.1 × σ 2 h , K = 4). 15) where {Ṽ k } and {Ũ k } are computed from {H ij } with no knowledge of the presence of {  ... 
doi:10.1109/tcomm.2012.091012.110110 fatcat:5kuwhbljgfhyfdzcl3hsnmbpuy

Robust Relay Precoder Design for MIMO-Relay Networks

P. Ubaidulla, A. Chockalingam
2010 2010 IEEE Wireless Communication and Networking Conference  
We consider the robust design of the MIMO-relay precoder and receive filter based on the minimization of the total MIMO-relay transmit power with constraints on the mean square error (MSE) at the destination  ...  The channel state information (CSI) available at the MIMOrelay node for precoding purpose is assumed to be imperfect.  ...  Most of the works mentioned above assume the availability of perfect channel state information (CSI) at the relay node.  ... 
doi:10.1109/wcnc.2010.5506473 dblp:conf/wcnc/UbaidullaC10 fatcat:kmvurcdaq5ah3cvq3lcaa2civq

Optimal training and redundant precoding for block transmissions with application to wireless OFDM

S. Ohno, G.B. Giannakis
2002 IEEE Transactions on Communications  
of the underlying frequency-selective FIR channels.  ...  Existing block transmission standards invoke bandwidth-consuming error control codes to mitigate channel fades, and training sequences to identify the FIR channels.  ...  the symbol MSE in (21) is minimized.  ... 
doi:10.1109/tcomm.2002.806547 fatcat:zi4xlx7dijfollbvrlsx7eavbu
« Previous Showing results 1 — 15 out of 9,927 results