We consider wideband wireless communication over a multiple-input, multiple-output (MIMO) Rayleigh fading channel where the transmitter has no channel state information (CSI). We study the channel with perfect receiver CSI (coherent channel) versus the channel with no CSI at the receiver (non-coherent channel). A channel with partial CSI at the receiver has a capacity between the coherent and n...

PURPOSE Anesthesiologists are often involved in the early management and resuscitation of patients who have sustained cervical spine injuries (CSIs). The most crucial step in managing a patient with suspected CSI is the prevention of further insult to the cervical spine (C-spine). In this review, important factors related to initial management, diagnosis, airway and anesthetic management of pat...

The Complex Streamed Instruction (CSI) set is an ISA extension targeted at multimedia applications. CSI instructions process two-dimensional data streams stored in memory, performing sectioning, data alignment and conversion between different packed data types all in hardware. It has been shown previously that CSI provides significant speedups compared to current media ISA extensions such as MM...

In the paper, we propose a channel-state-information (CSI) feedback method, especially, for large-scale MIMO (LMIMO) systems. From the enormous CSI, to extract essential information without redundant information, which arises from the highly correlated antennas, and to make the CSI to be sparse with its essential information, we propose to use a primary component analysis using a Karhunen-Loève...

In-space fljght experiments are required to validate dynamic response and control characteristics of ground experiments and their models in order to support future DoD/NASA Large Precision Space Structures missions. This paper, based on an ongoing Small Business Innovation Research(SBIR) Program with the Air Force Astronautics Laboratory, will describe an innovative approach for space flight ex...

We consider the problem of on-the-fly detection of temporal changes in the cognitive state of human subjects due to varying levels of difficulty of performed tasks using real-time EEG and EOG data. We construct the Cognitive State Indicator (CSI) as a function that projects the multidimensional EEG/EOG signals onto the interval Œ0; 1 by maximizing the Kullback-Leibler distance between distribu...

In this paper we address the design of a multiple transmit antenna system in which the Channel State Information (CSI) at the transmitter is not perfect. Two different approaches are analyzed one based on the Minimization of the Mean Square Error (MMSEj and the other based on the application of the Maximum Likelihood Sequence Estimation (MLSE). In both cases a Bayesian criterion is used in orde...

The optimization of the Downlink (DL) scheduling in wireless systems that utilize Orthogonal Frequency Division Multiple Access (OFDMA) requires knowledge of the Channel State Information (CSI) for each user and subchannel at the Base Station (BS). This requires a prohibitively high amount of channel resources in Uplink (UL). We focus on the problem of CSI feedback by UL Random Access (RA). Our...

ABSTRACT We consider the problem of optimal power allocation in an MISO system with perfect/partial channel state information (CSI) at the transmitter and perfect CSI at the receiver. Unlike other recent work, we consider power allocation in space and time. In addition to providing substantial reduction in BER, this control surprisingly provides exponential diversity order for a Rayleigh fading...

This paper presents a novel approach to investigate ergodic mutual information of OFDMA Selection-Decode-and-Forward (SDF) cooperative relay networks with imperfect channel state information (CSI). Relay stations are either dedicated or non-dedicated (i.e., subscriber stations assisting other subscriber stations). The CSI imperfection is modeled as an additive random variable with known statist...