IEEE 802.16e OFDMA 上行及下行通道估測技術之設計

Abstract

802.16e的通道估測最主要的挑戰就是，如何用有限的前導訊號來估測出時變通道。在本篇論文中，所提出的通道估測方法基於適當的數學模型假設。此數學模型可以有效減少所需估計的未知數並且解決前導訊號不足的問題。因此，提出的方法可以估測出時變的通道，更被設計為準確且可以實作的。

The main challenge of channel estimation in an IEEE 802.16e system is how to estimate time-variant channel by using limited pilot tones. In this thesis, the proposed channel estimation method is based on appropriate mathematical models. We can overcome the lack of pilot tones and reduce unknown parameters by using these mathematical models. Therefore, the channel estimation in time-variant channel is feasible, and it is designed to be accurate and practical.