Channel-state-information (CSI) feedback methods are considered, especially for massive or very large-scale multipleinput multiple-output (MIMO) systems. To extract essential information from the CSI without redundancy that arises from the highly correlated antennas, a receiver transforms (sparsifies) a correlated CSI vector to an uncorrelated sparse CSI vector by using a Karhunen-Loève transfo...

The Complex Streamed Instruction Set (CSI) architecture was proposed in order to overcome the limitations of existing multimedia-oriented ISA extensions, such as Intel’s MMX and SSE. One of the main limitations is the large amount of instructions which has to be executed. In CSI, instructions operate on data streams of arbitrarylength, which allows to dramatically reduce the instruction counts ...

PURPOSE To quantify the risk of radiation-induced second malignancies (SMN) in pediatric patients receiving craniospinal irradiation (CSI) either with 3-dimensional conformal radiation therapy (Conv CSI) or tomotherapy helical intensity modulated radiation therapy (Tomo CSI). METHODS AND MATERIALS A novel predictive model that accounts for short- and long-term carcinogenesis was incorporated ...

This paper characterizes the degrees of freedom (DoF) regions for the multi-user vector broadcast channel with periodic channel state information (CSI) feedback. As a part of the characterization, a new transmission method called spacetime interference alignment is proposed, which exploits both the current and past CSI jointly. Using the proposed alignment technique, an inner bound of the sum-D...

Cloud radio access network (Cloud-RAN) is a revolutionary RAN architecture. It provides a cost-effective way to improve both the network capacity and energy efficiency by shifting the baseband signal processing to a single baseband unit (BBU) pool, which enables centralized signal processing. However, in order to exploit the performance gains of full cooperation, full channel state information ...

The Complex Streamed Instruction (CSI) set is an architectural paradigm designed to accelerate multimedia applications. These applications are characterized by streaming operations on small-width data elements such as 8-bit pixels or 16-bit audio samples. CSI instructions operate on two-dimensional data streams in a SIMD fashion and are able to process streams of arbitrary length. In this paper...

Base station cooperation is an attractive technique to increase the spectral efficiency of multi-cell systems. One of the challenges in multi-cell systems is obtaining accurate channel state information (CSI) at the base station. One source of CSI inaccuracy is the delay incurred in obtaining CSI and exchanging it among base stations. The presence of delay is inevitable when CSI is exchanged ov...

BACKGROUND Many musculoskeletal pain conditions are characterized by hypersensitivity, which is induced by central sensitization (CS). A questionnaire, the Central Sensitization Inventory (CSI), was recently developed to help clinicians identify patients whose presenting symptoms may be related to central sensitivity syndrome (CSS). The aims of the present study were to examine criterion validi...