论文标题
无线多载波（MC）通信系统的性能评估
Performance Evaluation of Wireless Multi-Carrier (MC) Communication Systems
论文作者
论文摘要
本论文与OFDM系统的数据辅助方案（DA）方案和CFO跟踪有关。 OFDM系统模型首先是无CFO，然后使用CFO开发的。通过模拟评估系统性能。位错误率（BER），星座图，相位输出和相误差作为性能度量。在不同的通道条件下，评估了不同类型的调制的性能。在本文中，提出了基于2型控制环的CFO跟踪的双带宽，以减少PLL的采集时间。事实证明，所提出的计划的速度明显快，并改善了系统。同样，通过使用聚集的试验音调，可以改善对双带宽方案的进一步完善。改进的双带宽方案比双带宽方案更好。
This thesis is concerned with data-aided (DA) scheme and CFO tracking for OFDM system. OFDM system model is developed first without CFO and then with CFO. The system performance is evaluated via simulation. The bit error rate (BER), constellation diagram, the phase output and phase error were taken as performance measures. The performance is evaluated for different types of modulation over different channel conditions. In this thesis, a dual bandwidth for CFO tracking based on type-2 control loop to reduce the acquisition time of PLL is proposed. It is proved that the proposed scheme is significantly faster than, and improves the system BER. Also, further refinement to the dual bandwidth scheme is improved by using clustered pilot tones. The improved dual bandwidth scheme is better than the dual bandwidth scheme.
