Fabien Delestre

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— In this paper, channel estimation for Space-Time Block Code (STBC)-Orthogonal Frequency Division Multiplexing (OFDM) is investigated for Mobile WiMax systems. A new channel estimation approach is proposed using the dedicated pilot subcarriers defined at constant intervals by the WiMax standard. The estimation method has low computation as only linear(More)
— This paper describes a channel estimation scheme for Multiple Input Multiple Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) systems based on training sequence. We first develop an approach to channel estimation which is crucial for the decoding of the transmitted data. We then discuss the implementation of the proposed method for WiMax(More)
—So far, complex valued orthogonal codes have been used differentially in cooperative broadband networks. These codes however achieve less than unitary code rate when utilized in cooperative networks with more than two relays. Therefore, the main challenge is how to construct unitary rate codes for non-coherent cooperative broadband networks with more than(More)
— Most of the previous works on distributed space-time coding assume that there is no direct link between the source and the destination, which means that the source is not actively involved in cooperation. In order to present the benefits that can be extracted when the source is actively involved in cooperation, we propose a source-assisting (SA) strategy(More)
Intravascular malignant lymphomatosis (IML), so-called malignant angioendotheliomatosis, was found in lumbosacral spinal cord and nerve roots of a 78-year-old women who died one month after the onset of symptoms. With regard to the majority of the 37 reviewed neurological cases in the literature, this report is unusual in that the disease was exclusively(More)
Two new cases of X-chromosome linked bulbospinal muscular atrophy associated with gynecomastia (described by Kennedy in 1968) are reported. In one patient, an electrophysiological study and a muscle nerve biopsy were performed. Motor nerve conduction studies were normal but sensory action potentials were small or unrecordable in the absence of clinical(More)