Gear geometry was optimized for decreased transmission error in order to reduce gearbox noise. Robustness with respect to gear deviations and varying torque was considered in order to find a gear geometry giving low noise in the appropriate torque interval despite deviations from the nominal geometry due to manufacturing tolerances. Static and dynamic transmission error as well as noise and hou...

Under the condition of limited feedback, due to the multiple antennas cognitive two-way relay system due to the relay node have been the channel state information and the actual channel state information is error, caused the user system interference to primary user system increases, at the same time reduces the transmission rate of user system. Aiming at this problem, this paper on the basis of...

In this paper we introduce error-control techniques for improving the error-rate performance that is delivered to an application in situations where the inherent error rate of a digital transmission system is unacceptable. The acceptability of a given level of bit error rate depends on the particular application. For examples, certain types of digital speech transmission are tolerant to fairly ...