标题: | 符合IEEE802.16e都会区域网路传输系统的框同步技术研究 Pilot-Assisted Frame Synchronization Technique for IEEE 802.16e Wireless Metropolitan Area Network |
作者: | 钟国洋 Gwo-Tung Chung 魏哲和 杭学鸣 Che-Ho Wei Hsueh-Ming Hang 电子研究所 |
关键字: | 802.16e;正交分频多工;码框同步;时间同步;802.16e;OFDM;Frame synchronization;Timing synchronization |
公开日期: | 2005 |
摘要: | 摘要 WiMax主要是由IEEE 802.16e的规格来实现,它利用OFDM的技术来传送资料,可把资料传到30哩外,并涵盖半径一哩内的范围。IEEE 802.16e是802.16-2004架构的延伸,支援定点或移动环境的传输。 OFDM的系统性能对时间与频率的同步非常敏感,不同步的情况会造成系统效能严重的衰减。本篇论文针对IEEE 802.16e 都会区域网路(WiMax)的码框同步,提出一个低复杂度的演算法,并与Schmidl & Cox的方法在复杂度与系统效能上分别在AWGN及具有移动性以及静止的多重路径环境下做一比较 。电脑模拟结果显示新的演算法的确是简单而且有效。 WiMax is realized by the specification of IEEE 802.16e.It can transmit data over 30 miles and contain the range within 1 mile radius .The transmission system is implemented by OFDM technique. IEEE 802.16e is the extension of 802.16-2004 structure,which supports both fixed position and mobile transmission environments. OFDM system is very sensitive to the timing and frequency errors,the effect of timing and frequency error will degrade the system performance seriously.In this paper,a low-complexity algorithm for the frame synchronization of IEEE 802.16e WiMax is proposed.The proposed method is compared with the method proposed by Schmidl and Cox’s in AWGN,mobile,and static mutipath channel,respectively.Simulation results also show that the proposed method can be implemented efficiently with lower complexity. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009311662 http://hdl.handle.net/11536/78133 |
显示于类别: | Thesis |
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