Zhu Hai-feng

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OBJECTIVE The aim of this retrospective study was to evaluate the programmed cell death 1 (PD-1) expression in esophageal squamous cell carcinoma (ESCC) and association with clinical characteristics. MATERIALS AND METHODS From January 2009 to December 2014, 88 patients with ESCC were retrospectively included in this study. Eighty-eight cancer tissues, 35(More)
Differential turbo coded OFDM(DTC-OFDM) scheme was presented, together with a differential soft-detection method for Ka-band satellite communications. DTC-OFDM combines Turbo codes, orthogonal frequency division multiplexing (OFDM) modulation and differential detection, which has the advantages of high spectrum efficiency and suppression of multipath(More)
An OFDM system optimization for satellite communication in Ka band is estimated in terms of the Shannon theory. The analysis covers a novel closed-form expression for the optimal subcarriers, with respect to the maximization of the achieved spectral efficiency, expressed in terms of the theoretically Shannon channel capacity available to each system's user.
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