Tung T. Pham

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Wireless amplify-and-forward relay networks in which the source communicates with the relays and destination in the first phase and the relays forward signals to the destination in the second phase over orthogonal and uncorrelated Rayleigh fading channels are considered. Convex programming is used to obtain optimal and approximately optimal power allocation(More)
This paper addresses the optimal cooperative beamforming design for multi-user multi-relay wireless networks in which the single-carrier frequency division multiple access (SC-FDMA) technique is employed at the terminals. The problem of interest is to find the beamforming weights across relays to maximize the minimum signal-to-interference-plus-noise ratio(More)
—This paper considers optimal distributed beamform-ing designs in a multi-relay network with multiple sources and multiple destinations. It is assumed that all source-destination pairs operate in orthogonal channels to avoid inter-user interference at the destinations. The distributed beamforming designs are carried out to minimize the sum relay power with(More)
—This paper presents two designs of optimal nonuni-formed constellations for decode-and-forward wireless relay networks with an orthogonal space–time block code (STBC). The first design is concerned with the unequal error protection issue, in which two data streams to be transmitted from a source to a destination are protected at two different levels. The(More)
Tacrolimus-loaded poly(lactic-co-glycolic acid) microspheres (TAC-PLGA-M) can be administered for the long-term survival of transplanted organs due to their immunosuppressive activity. The purpose of our study was to optimize the parameters of the electrospray method, and to prepare TAC-PLGA-M with a high payload and desirable release properties. TAC-PLGA-M(More)
Despite tremendous progress in chemotherapy, drug resistance remains a major challenge for anticancer treatment. The combinations of chemo-photothermal and chemo-chemo treatments have been reported to be potential solutions to overcome drug resistance. In this study, we developed a dual-in-dual synergistic therapy based on the use of dual anticancer(More)
2387 Fig. 7. MSE on the CFR of the structured LS for different structures versus SNR: Case of guard bands of 20 subcarriers inserted at each spectrum side, comb-type channel estimation with useful subcarriers, N E = 88, and pilot subcarriers spacing. D = 7. derived SNR thresholds are sufficiently accurate, thus confirming the validity of the approximations(More)