Zhanqi Dong

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The paper proposes a geographic routing based on A-star algorithm. The routing applies A-star algorithm after being reformed in ad hoc networks, which can not only resolves the problem of what to do at local minimum node where greedy forwarding fails, but also can avoid the complexity to construct and manage the routing planar graph in the planar graph(More)
Based on the prominent characteristic that the delay-multiply signals of the direct sequence spread spectral (DSSS) signals are periodical signals, the paper proposes an efficient method for the detection of DSSS signals: the detection, symbol period and chip width estimation of DSSS signals based on delay-multiply, correlation and spectrum analysis. The(More)
The blind channel equalization based on second-order statistics of the over-sampling signal can identify nonminimum phase multipath channels, it has good convergence properties, needs less computation and can achieve equalization with fewer symbols than most techniques based only on higher-order statistics. The paper not only expounds the channel model and(More)
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