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— This paper compares multi-carrier code division multiple access (MC-CDMA) with cyclically prefixed direct sequence CP-DS-CDMA in an uplink channel. For the CP-DS-CDMA scheme, we propose an MMSE-based multiuser detection (MUD) technique, which recovers code orthogonality among users destroyed by frequency-selective fading in the frequency domain. On the(More)
We propose a method to recognize cups on desks and to detect liquids in cups with a depth camera using triangulation. When we measure an opaque liquid in a cup with the depth camera, the liquid surface is measured. On the other hand, when we measure a transparent liquid, the raised bottom is measured due to the principle of light refraction and(More)
The high mobility group box 1 protein (HMGB1) is an alarmin that plays an important role in sepsis and has been recognized as a promising target with a wide therapeutic window; however, no drugs and devices are currently in practical use. We hypothesized that hemofilters composed of porous membranes or cytokine-adsorbing membranes could remove HMGB1 from(More)
—It is well known that orthogonal frequency-division multiplexing (OFDM) is robust to frequency-selective fading in wireless channels due to the exploitation of a guard interval that is inserted at the beginning of each OFDM symbol. However, once delayed signals beyond the guard interval are introduced in a channel with a large delay spread, intersymbol(More)
This paper presents uplink spatial scheduling with adaptive transmit beamforming, where terminals perform system-based transmit beamforming in multiuser multi-input multi-output (MIMO) systems. In the presented spatial scheduling, the base station (BS) selects appropriate combination of terminals and their transmit beamforming among possible terminals. In(More)
Sustained high-efficiency daily diafiltration using a mediator-adsorbing membrane (SHEDD-fA) is an effective, intensive modality for sepsis treatment. Here we describe the effectiveness of SHEDD-fA, which makes the best use of three principles: dialysis, filtration and adsorption, for mediator removal in the treatment of severe sepsis. SHEDD-fA was(More)
— This paper proposes a novel pre-FFT type OFDM adaptive array antenna called " Eigenvector Combining. " The eigenvector combining is a realization of a post-FFT type OFDM adaptive array antenna through a pre-FFT signal processing, so it can achieve excellent performance with less computational complexity and shorter training symbols. Numerical results(More)
This paper proposes a novel downlink spatial scheduling algorithm in multiuser MIMO systems, which selects good combination of terminals and base station(BS)'s transmit beams so that the BS's beams nullify inter-stream interference at the selected terminals. In the derivation process, we reveal new property that the optimization problem of downlink spatial(More)