Jian-wei Wu

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Because of the environment and the nature of the signal itself, GPS or wireless mobile positioning technology always has any unavoidable defect. But higher coverage percentage, reliability or precision than single positioning can be gained if integrating at least two positioning technologies' advantages and avoiding their deficiencies. So the developmental(More)
In order to resolve collaborative filtering recommendation system recommended decline in the quality for the sparse dataset, a dynamic Item-based weight collaborative recommendation algorithm is presented, which user's preference weight items vector set is constructed based on filtering user's evaluating data and the data rate measured and time-weighted are(More)
In this paper, we use optical feedback injection technique to generate tunable microwave, millimeter-wave and submillimeter-wave signals using single-mode Fabry-Pérot laser diode. The beat frequency of the proposed generator ranges from 30.4 GHz to 3.40 THz. The peak power ratio between two resonating modes at the output spectrum of can be less than 0.5 dB(More)
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