中文摘要：

为了满足用户的公平性要求,研究了无线非再生中继网络中,基于多用户服务质量（QoS）保证的功率分配策略.首先在总功率受限条件下,提出了最小化最大（min-max）用户中断概率的功率分配方案;然后在中断概率和总功率受限条件下,提出了最大化最小（max-min）用户速率的功率分配方案.上述功率分配问题可转化为几何优化（GP）问题进行求解.仿真结果表明,所提功率分配策略能有效满足用户间的QoS要求.

英文摘要：

To guarantee the fairness requirements of each user,we study the power allocation strategies based on multi-user quality of service（QoS） constraints in amplify-and-forward wireless relay networks,a new power allocation schemes is proposed to i） minimize the maximum outage probability over all users,and ii） to maximize the minimum rate under the outage probability and total power constraints.The power allocation schemes are formulated using geometric programming（GP）.Since GP problem is readily transformed into an equivalent convex optimization problem,optimal solution can be obtained efficiently.Simulation show that proposed schemes can efficiently guarantee the QoS requirement.