A novel Bar TSV(B-TSV) structure, formed by two semi-cylinders combining with a quadrangular is studied in this paper. This B-TSV structure extends the TSV design options by introducing new design parameters. The scalable electrical model of B-TSV is proposed and the effects of design parameters, such as the side length of quadrangular and the minimum distance between TSVs are investigated and concluded by a 3D electromagnetic solver. Performance comparison between B-TSV and the traditional cylindrical one is also provided by simulation under the Ground-Signal-Ground configuration. Simulation results show that B-TSV has better performance than the traditional one, and can be used to increase the TSV array density without degrading the electrical performance of TSV system.

A scheme of HARQ re-sending nodes selection for relay network is purposed in this paper. The study is focused on how to select relay node with minimum resending power under the particular required receiving performance of the destination node. The candidate relay nodes are divided into several regions according to the difference of resending power required. With this selection scheme, the diversity gain and high system power efficiency can all be achieved. The effectiveness of this scheme is proved by the simulation results.