Xiamen University

Xiamen Sanan Integrated Circuit Co., Ltd.

Bin Li

Chih-Hung Yen

Jian Yang

Feng Tong

Xiuling Cao

Siyuan Zheng

A method for underwater acoustic communication includes steps of S1: capturing a synchronization signal using a cross-correlation operation; S2: performing time forward shifting and reversing processing and time backward shifting and reversing processing, respectively, on the synchronization signal to obtain a forward shifted time reversal coefficient and a backward shifted time reversal coefficient; S3: performing a convolution operation of the forward shifted time reversal coefficient and the backward shifted time reversal coefficient, respectively, with a subsequently captured information sequence to obtain a forward shifted time reversal output and a backward shifted time reversal output; S4: processing the forward shifted time reversal output and the backward shifted time reversal output, respectively, with a forward shift equalizer and a backward shift equalizer to obtain two sets of equalizer outputs; and S5: selecting one of the two sets of equalizer outputs with a smaller error for data decoding to obtain a desired signal.

Method, device and system for underwater acoustic communication

A cascode transistor device includes a semiconductor substrate, and a first and a second compound semiconductor transistors. The first compound semiconductor transistor includes a first n-type doping layer, a first p-type doping layer and a second n-type doping layer sequentially disposed on the semiconductor substrate. The second compound semiconductor transistor includes a third n-type doping layer, a second p-type doping layer and a fourth n-type doping layer sequentially disposed on the second n-type doping layer. Each of these doping layers is formed with an exposed metal contact. The exposed metal contact on the second n-type doping layer is electrically connected to the exposed metal contact on the third n-type doping layer.

Cascode transistor device

Growing community of inventors

Xiamen, China

Bin Li