摘要：The relay node with linear relaying transmits the linear combination of its past received *** optimization of two-hop relay channel with linear relaying is discussed in this *** capacity for the two-hop Gaussian relay channel with linear relaying is derived,which can be formulated as an optimization problem over the relaying matrix and the covariance matrix of the signals transmitted at the *** is proved that the solution to this optimization problem is equivalent to a "single-letter" optimization *** also show that the solution to this "single-letter" optimization problem has the same form as the expression of the rate achieved by Time-Sharing Amplify and Forward(TSAF).In order to solve this equivalent problem,we proposed an iterative *** results show that if channel gain of one hop is relatively smaller,the achievable rate with TSAF is closer to the max-flow min-cut capacity bound,but at a lower complexity.

摘要：随着GSM用户对无线数据业务提出更高要求,基于GSM网络的增强数据率解决方案逐渐被运营商引入,作为移动通信平滑演进的过渡解决方案。本文介绍了EGPRS的技术特点、着重分析了EGPRS网络规划的主要特点,并和传统GSM网络规划方法进行比较分析。