Yung-Cheng Yao

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This paper proposes a partial transmit sequence (PTS) scheme with applying a stochastic optimization technique for peak-to-average power ratio (PAPR) reduction in the orthogonal frequency division multiplexing (OFDM) system. PTS technique combining can improve the PAPR statistics of an OFDM signals, but the considerable computational complexity for the(More)
The sub carriers of orthogonal frequency division multiplexing (OFDM) systems may fail to keep orthogonal to each other under time-varying channels. The loss of orthogonality between the sub carriers will degrade the system performance, and this effect is named inter carrier interference (ICI). A Wiener-based successive interference cancellation (SIC)(More)
In this paper, we propose an adaptive power allocation algorithm for multi-relay amplify-and-forward cooperative orthogonal frequency division multiplexing (OFDM) systems. However, Conventional power resource allocation schemes based on equal distribution of bandwidth and/or power may not be efficient given the constrained power and bandwidth at the relay(More)
In this paper, a method to improve the accuracy of the time of arrival position location (TOA-PL) solution in multistatic radar systems is proposed. In the conventional TOA-PL technique, the least square (LS) method is applied to estimate target location. However, the performance of the method is significantly degraded under wrong measured data (called as(More)
The subcarriers of orthogonal frequency division multiplexing (OFDM) systems may fail to keep orthogonal to each other under time-varying channels. The loss of orthogonality among the subcarriers will degrade the system performace, and this effect is named intercarrier interference (ICI). In this paper, a Wiener-based successive interference cancellation(More)
In this paper, we use the space time coding method in AF (amply-and-forward) cooperative network with two relay node by properly arranging the relay node working state. After deriving the SNR (signal to noise ratio) at the destination node, we show that the physical meaning of the SNR is equivalent to the SNR in the case of a resource transmitting via two(More)
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