Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 1 - 10
of
1,282
Transmitter Optimization for the Multi-Antenna Downlink with Per-Antenna Power Constraints
- IEEE TRANSACTIONS ON SIGNAL PROCESSING
, 2007
"... This paper considers the transmitter optimization problem for a multiuser downlink channel with multiple transmit antennas at the base-station. In contrast to the conventional sum-power constraint on the transmit antennas, this paper adopts a more realistic per-antenna power constraint, because in ..."
Abstract
-
Cited by 135 (7 self)
- Add to MetaCart
in practical implementations each antenna is equipped with its own power amplifier and is limited individually by the linearity of the amplifier. Assuming perfect channel knowledge at the transmitter, this paper investigates two different transmission schemes under the per-antenna power constraint: a minimum-power
Zero Forcing Precoding and Generalized Inverses
"... We consider the problem of linear zero forcing precoding design, and discuss its relation to the theory of generalized inverses in linear algebra. Special attention is given to a specific generalized inverse known as the pseudo-inverse. We begin with the standard design under the assumption of a tot ..."
Abstract
-
Cited by 52 (0 self)
- Add to MetaCart
total power constraint and prove that precoders based on the pseudo-inverse are optimal in this setting. Then, we proceed to examine individual per-antenna power constraints. In this case, the pseudo-inverse is not necessarily the optimal generalized inverse. In fact, finding the optimal inverse is non
Input optimization for multi-antenna broadcast channels and per-antenna power constraints
- in Proc. IEEE GLOBECOM
, 2004
"... Abstract — This paper considers a Gaussian multi-antenna broadcast channel with individual power constraints on each antenna, rather than the usual sum power constraint over all antennas. Per-antenna power constraints are more realistic because in practical implementations each antenna has its own p ..."
Abstract
-
Cited by 11 (0 self)
- Add to MetaCart
Abstract — This paper considers a Gaussian multi-antenna broadcast channel with individual power constraints on each antenna, rather than the usual sum power constraint over all antennas. Per-antenna power constraints are more realistic because in practical implementations each antenna has its own
Optimal Generalized Inverses for Zero Forcing
"... Abstract-We consider the problem of linear zero forcing precoding design, and discuss its relation to the theory of generalized inverses in linear algebra. Special attention is given to a specific generalized inverse known as the pseudo-inverse. We begin with the standard design under the assumption ..."
Abstract
- Add to MetaCart
the assumption of a total power constraint and prove that precoders based on the pseudo-inverse are optimal in this setting. Then, we proceed to examine individual per-antenna power constraints. In this case, the pseudo-inverse is not necessarily the optimal generalized inverse. In fact, finding the optimal
Optimal Multi-antenna Relay Beamforming with Per-Antenna Power Control
"... Abstract—We consider amplify-and-forward multi-antenna relaying between a single pair of source and destination under perantenna power constraints. Our objective is to obtain the optimal relay processing matrix to minimize the maximum individual antenna power for a given received SNR target. The pro ..."
Abstract
-
Cited by 1 (0 self)
- Add to MetaCart
Abstract—We consider amplify-and-forward multi-antenna relaying between a single pair of source and destination under perantenna power constraints. Our objective is to obtain the optimal relay processing matrix to minimize the maximum individual antenna power for a given received SNR target
Miso capacity with per-antenna power constraint
- IEEE Trans. Commun
, 2011
"... Abstract—We establish in closed-form the capacity and the optimal signaling scheme for a MISO channel with per-antenna power constraint. Two cases of channel state information are considered: constant channel known at both the transmitter and receiver, and Rayleigh fading channel known only at the r ..."
Abstract
-
Cited by 15 (3 self)
- Add to MetaCart
Abstract—We establish in closed-form the capacity and the optimal signaling scheme for a MISO channel with per-antenna power constraint. Two cases of channel state information are considered: constant channel known at both the transmitter and receiver, and Rayleigh fading channel known only
Per-Antenna Power Constrained MIMO Transceivers Optimized for BER
"... Abstract — This paper considers the linear transceiver optimization problem for multi-carrier multiple-input multipleoutput (MIMO) channels with per-antenna power constraints. Because in practical implementations each antenna is limited individually by its equipped power amplifier, this paper adopts ..."
Abstract
-
Cited by 1 (1 self)
- Add to MetaCart
Abstract — This paper considers the linear transceiver optimization problem for multi-carrier multiple-input multipleoutput (MIMO) channels with per-antenna power constraints. Because in practical implementations each antenna is limited individually by its equipped power amplifier, this paper
Deformable models in medical image analysis: A survey
- Medical Image Analysis
, 1996
"... This article surveys deformable models, a promising and vigorously researched computer-assisted medical image analysis technique. Among model-based techniques, deformable models offer a unique and powerful approach to image analysis that combines geometry, physics, and approximation theory. They hav ..."
Abstract
-
Cited by 591 (7 self)
- Add to MetaCart
This article surveys deformable models, a promising and vigorously researched computer-assisted medical image analysis technique. Among model-based techniques, deformable models offer a unique and powerful approach to image analysis that combines geometry, physics, and approximation theory
Results 1 - 10
of
1,282
