Limited research has focused on recruitment strategies for health promotion researchers conducting small-scale pilot studies. Such research is important because small studies often have limited funding streams and personnel resources. Accordingly, many techniques implemented by large-scale studies are of limited use to smaller research projects. This article provides an overview effective parti...

In the next generation mobile communication systems, multiple-input multiple-output (MIMO) multiplexing is a technique indispensable to achieve very high-speed data transmission with a limited bandwidth. In MIMO multiplexing, it is necessary to estimate all channel gains between transmit and receive antennas for signal detection at the receiver. In this paper, we propose minimum mean square err...

This paper presents novel pilot signal design algorithms for efficient symbol time offset estimation in an OFDM system. Evenly spaced pilot signals in the frequency-domain have large correlation in the time-domain, and the ML function of the symbol time offset estimator induces an inaccurate value of time offset. Novel pilot signal design algorithms—Sine Algorithm, Shift Algorithm, and Sine and...

Based on frequency domain pilot channel estimation is a typical technology of channel estimation in OFDM system. In most cases, the pilot configuration of the system can’t start from the first subcarrier, which will have an effect on channel estimation values at the pilot, especially in the algorithm of channel estimation based on DFT interpolation which will largely degrade the performance of ...

In communication systems, channel coding is widely employed in order to have reliable data transmissions. Turbo codes were first introduced by C.Berrou in 1993 [I] as a powerful channel coding technique, and were shown to achieve performance near Shannon capacity over an additive white Gaussian noise (AWGN) channel. In this thesis, two schemes related to turbo codes are proposed, and are shown ...

Abstract: The semi-blind recursive least squares (RLS) based adaptive receiver has been designed to perform joint interference suppression and equalization for space time block codes (STBC) in a frequency and time selective channel. In order to decrease pilot requirements in the training block, this paper introduces a linear predictor (LP) algorithm to do a forward prediction of the channel coe...

A new twin-roll continuous slag solidification process and heat recovery process from a slag packed bed was developed for utilization of the waste heat of steelmaking slag. Plate-shaped slag with the thickness about 7 mm was successfully produced in a pilot plant, and the sensible heat of the slag was recovered by blowing air into the slag chamber. However, the gas distribution inside the slag ...

In this letter, we introduce a novel pilot design approach that minimizes the total mean square errors of the minimum mean square error estimators of all base stations (BSs) subject to the transmit power constraints of individual users in the network, while tackling the pilot contamination in multicell Massive MIMO systems. First, we decompose the original non-convex problem into distributed op...

In wireless orthogonal frequency division multiplexing (OFDM) systems, the time-varying channel is often estimated by algorithms based on pilot symbols. Such an estimator, however, requires statistical prior knowledge that is not easily obtained. Therefore, the pilot tones have to be close enough to fulfill the sampling theorem. In this case the statistical knowledge of the channel is not requi...