通信理论，3G到4G重点技术及比较，原创论文，英文版。-This report offers a critical view on the features of main technologies (coding, modulation, signal processing and MA) that underpin the migration from 3G to 4G.

This report explains the queuing systems in a small clinic which has two types of queuing systems and can be denoted by Kendall’s notation M/U/1 and M/M/2. The confidence intervals for necessary queuing parameters are calculated for both of the que