摘要
针对当前载波同步算法在低信噪比下存在的开销大和复杂度高的问题,提出了一种基于"绿色通信"理念的自适应载波同步系统设计方法。首先利用控制参数法使最佳性能方案向次最佳性能方案转化,然后在满足较小信噪比损失的前提下比较各方案并给出具有开销小和复杂度低的方案。仿真结果表明相比最佳性能方案,次最佳性能方案的导频开销和复杂度分别可降17%和38%,因而非常符合"绿色通信"的理念。
Considering both large cost and high complexity of current carrier synchronization systems at lowsignal-to-noise ratio（SNR）,this paper presents an adaptive carrier synchronization system design methodbased on the concept of “ green communication 冶. First,the control parameter method is adopted to makethe optimal performance scheme translate into suboptimal ones. Then,under the premise of satisfying fewer SNR losses,the suboptimal schemes are compared and some schemes with both small cost and low complexityare given. Simulation results show that compared with the optimal performance scheme,normalized pilotcost and complexity of the suboptimal ones can be reduced by 16% and 38% respectively,thus being accordablewith the concept of “green communication”.
出处
《电讯技术》
北大核心
2016年第8期867-872,共6页
Telecommunication Engineering
关键词
绿色通信
自适应载波同步
低信噪比
控制参数法
green communication
adaptive carrier synchronization
low SNR
control parameter method
