IEEE 802.15.3c通道估測效能研究

IEEE 802.15.3c channel estimation performance study

王韻婷(Yun-Ting Wang)

指導教授 ： 李穎

元智大學/電機通訊學院/通訊工程學系/碩士(2012年)

https://doi.org/10.6838/YZU.2012.00096

摘要

本研究探討IEEE 802.15.3c (TG3c)規格中單載波傳輸(SC PHY)之通道估測效能。此規格之通道估測序列(Channel Estimation Sequence, CES)是利用成對的格雷互補序列(Golay complementary sequence)組合而成，使用循環字首(Cyclic Prefix, CP)加以延伸。格雷互補對具有非週期自相關函數和為完美脈衝的性質，利用此性質可提升通道估測準確度。
我們針對Lei、Huang在2009年所使用之通道估測序列以及IEEE 802.15.3c標準中所採納之通道估測序列各自進行通道估測效能研究。在不改變通道估測序列之情況下，藉由改變接收端訊號處理方式，即可取得更優良之通道估測效能。研究中也將原包含循環字首(CP)之通道估測序列改變為含ZP(zero padding)結構之通道估測序列，比較通道估測效能，並討論含CP或ZP的通道估測序列之Guard Ratio。

關鍵字

IEEE 802.15.3c ； 格雷互補對 ； 通道估測

並列摘要

This research studies the performance of channel estimation for the single carrier mode of the mmWave PHY in IEEE 802.15.3c(TG3c). The channel estimation sequence (CES) contains pairing Golay complementary sequences with cyclic prefix (CP) extensions. Golay complementary sequences have the property that the sum of the aperiodic auto-correlation functions of pairing sequences is a perfect impulse function. This property can be used to provide channel estimation results with high accuracy.
We conduct performance study using the channel estimation sequence employed by Lei and Huang in 2009 and the channel estimation sequence adopted by the IEEE 802.15.3c standard. Without changing the channel estimation sequences, the channel estimation performance can be improved significantly by changing the signal processing methods at the receiver. We also change the cyclic prefix and postfix (CP) in the channel estimation sequences into zero padding (ZP), compare the channel estimation performance, and discuss the guard ratio in channel estimation sequences containing CP and ZP.

並列關鍵字

IEEE 802.15.3c ； Golay complementary pair ； channel estiamtion

參考文獻

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