Quoc-Tuong Ngo

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—A precoder based on the exact optimization of the minimum Euclidean distance d min between signal points at the receiver side is proposed for MIMO-OFDM systems using a 16-QAM modulation. Assuming that channel state information (CSI) can be made available at the transmitter, the channel is diagonalized and a precoder can be derived. A numerical approach(More)
—Not only the minimum Euclidean distance but also the number of neighbors providing the dmin in the received constellation has an important role in reducing the error probability when Maximum Likelihood detection is considered. Assuming that the channel-state-information is available at the transmitter, a new precoder in which the rotation parameter has no(More)
In this article, we investigate the linear precoder based on the maximization of the minimum Euclidean distance between two received data vectors. This new precoding matrix is expressed as the product of a power allocation matrix and an input-shaping matrix. The input-shaping matrix is selected as a normalized discrete Fourier transform-matrix, and the(More)
A new precoding strategy, which considers not only the minimum Euclidean distance but also the number of neighbors providing the distance d min , is proposed. Firstly, a new pa-rameterized form of Neighbor-d min precoder is presented, where all angles containing the phase are assumed to be zero to reduce the number of difference vectors providing d min. The(More)
—Through a feedback link, the channel state information acquired at the receiver is known at the transmitter and MIMO precoding techniques can be applied according to various criteria. In this paper, an efficient linear precoder based on the maximization of the minimum Euclidean distance between two received data vectors for three data-stream MIMO spatial(More)
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