Linear transceiving schemes between the relay and the destination have recently attracted much interest in MIMO amplify-and-forward (AF) relaying systems due to low implementation complexity. In this paper, we provide comprehensive analysis on the diversity order of the linear zero-forcing (ZF) and minimum mean squared error (MMSE) transceivers. Firstly, we obtain a compact closed-form expressi...

Three transmission schemes over a new type of multiple-access channel (MAC) model with inter-source communication links are proposed and investigated in this paper. This new channel model is well motivated by, e.g., wireless distributed storage networks, where communication to repair a lost node takes place from helper nodes to a repairing node over a wireless channel. Since in many wireless ne...

We consider Discrete Multitone (DMT, baseband OFDM) modulation and perform a detailed noise analysis which takes into account dependencies and power differences of real and imaginary part after the complex valued discrete Fourier transform (DFT). We show that for colored noise rotated rectangular symbol constellations are more appropriate than the common (quadratic) QAM symbol constellations wi...

Aseptic loosening is seen in a significant proportion of cemented total hip replacements (THR). In a small subgroup of patients who suffer early loosening polyethylene debris is unlikely to be responsible. We recently reported one case of allergic contact dermatitis to N,N-dimethylparatoluidine (DMT), an accelerator used in bone cement. We have therefore investigated this using skin-patch tests...

This application note discusses methodology for testing analog amplifiers designed to process DMT (discrete multitone) waveforms, also known as OFDM (orthogonal frequency division multiplexing) waveforms. There is a brief introduction of the DMT waveform where it’s pointed out that a troublesome characteristic of the DMT waveform is a probabilistically large peak to average amplitude ratio. The...

OBJECTIVE We investigated whether use of the World Health Organization's (WHO's) Decision-Making Tool (DMT) for Family Planning Clients and Providers would improve the process and outcome quality indicators of family planning (FP) services in Iran. METHODS The DMT was adapted for the Iranian setting. The study evaluated 24 FP quality key indicators grouped into two main areas, namely process ...

In this paper, a novel location management scheme, distributed mobile tracking (DMT), is proposed for routing improvement in Cellular IP networks. A mobile-tracking tree (MT-Tree) for each active mobile host is established by tracking the movement of the host in DMT. Two mechanisms, pruning process and growing process, are also proposed to improve DMT. Packet transmissions can follow the route ...

BACKGROUND Availability of oral disease-modifying therapy (DMT) for relapsing-remitting multiple sclerosis (RRMS) may affect injectable DMT (iDMT) treatment patterns. OBJECTIVE The objective of this paper is to evaluate iDMT persistency, reasons for persistency lapses, and outcomes among newly diagnosed RRMS patients. METHODS Medical records of 300 RRMS patients initiated on iDMT between 20...

Under the more practical assumption that transmitters have no knowledge of the channel state information (CSI) but the channel distribution information (CDI), this paper examines the diversity-multiplexing trade-off (DMT) of two classes of cooperative protocols, namely, the amplify-and-forward (AF) and decode-and-forward (DF) protocols, with a three-node half-duplex relay network under slow fad...

Psychoria viridis (chacruna) is a hallucinogenic plant with psychoactive properties associated with the presence of N,N-dimethyltryptamine (DMT). This species is primarily known as an ingredient of the beverage Ayahuasca, but dry leaves are also smoked by recreational users. The plant is controlled in Poland and France and its proper identification poses many challenges due to the fact that gen...