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| 研究生： |
黃建文 Chien-wen Huang |
|---|---|
| 論文名稱： |
針對正交分頻多工存取系統採用動態頻率選擇演算法 Algorithm for OFDMA Systems Using Dynamic Frequency Selection |
| 指導教授： |
吳中實
Jung-Shyr Wu |
| 口試委員: | |
| 學位類別： |
碩士 Master |
| 系所名稱： |
資訊電機學院 - 通訊工程學系在職專班 Executive Master of Communication Engineering |
| 畢業學年度： | 96 |
| 語文別： | 中文 |
| 論文頁數： | 49 |
| 中文關鍵詞： | 頻率 、正交分頻多工 |
| 外文關鍵詞： | frequency, OFDMA |
| 相關次數： | 點閱：14 下載：0 |
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隨著無線網路的蓬勃發展，WiMAX都會型無線區域網路的佈建是這幾年最發燒的話題，尤其是實體層採用OFDMA技術的IEEE 802.16e－2005規格將被視為下一代的行動通訊網路。
OFDMA技術支援多個使用者在同個時間點一起分享頻寬發送資料，大幅提高網路的使用者的容量及傳輸的吞吐率。本論文將重點放在訊框分配頻寬給使用者的下行資料時，能夠藉由不同使用者對於子通道有不同的通道品質特性，增加影像語音這類即時服務的資料可使用的訊框空間，並降低非即時服務資料傳送錯誤的機率。另外，考量到DL－MAP可能產生的Overhead，將可提升整個訊框可分配的頻寬資源。
As the wireless network growing rapidly in recent years, the construction of WiMAX metropolitan local network becomes the most popular issue. Especially the IEEE 802.16e－2005 standard, which provides OFDMA technique in physical layer, will be viewed as the next generation communication network.
OFDMA technique allows multi-user sharing in the bandwidth and transmitting in the same time, then the network’s capacity and throughput increases drastically. The main idea is to consider that the downlink frames are shared between each user could increase the available slots for rtPS traffic like image and voice data, also decrease the probability of transmitting error for nrtPS traffic because the sub-channel qualities for each user are mutually independent. In addition, it will add the bandwidth’s resource in the frame by checking the overhead which DL-MAP produces.
[1] IEEE Computer Society, IEEE Microwave Theory and Techniques Society. “IEEE Std 802.16e-2005 and IEEE Std 802.16-2004 / Cor1-2005”,IEEE Standard, 28 February 2006.
[2] Lihua Wan, Wenchoa Ma, Zihua Guo. “A Cross-layer Packet Scheduling and Subchannel Allocation Scheme in 802.16e OFDMA System ”, IEEE WCNC 2007, pp.1867－1872.
[3] Yehuda Ben-Shimol, Itzik Kitroser, Yefim Dinitz. “Two-Dimensional Mapping for Wireless OFDMA Systems ”, IEEE 2006 ,pp.388－396.
[4] Yuqin Chen, SungHwan Shon, Sang-Jo Yoo, Jae Moung Kim. “Dynamic Frequency Selection in OFDMA ”, ICACT 2006, pp.574－578.
[5] Teo Choon Heng Alen, A. S. Madhukumar, and Francious Chin. “Capacity Enhancement of a Multi-User OFDMA System Using Dynamic Frequency Allocation ”, IEEE JNL 2003, pp.1866－1870.
[6] 林衣修. “一種基於 QoS 與 Overhead 考量之二維 OFDMA 配置方法 ”, 中央大學通訊所, July 2007, 1－59頁.
[7] WiMAX Forum and WiMAX Forum CERTIFIED. “Mobile WiMAX－Part 1：A Technical Overview and Performance Evaluation ”, August 2006.
[8] WiMAX Forum Application AWGN Working Group. “WiMAX System Evaluation Methodology ”, September 2007.
[9] WiMAX Forum Application AWGN Working Group. “System Design and AWGN Results ”, August 2007, pp.1－37.
[10] IEEE 802.16 Broadband Wireless Access Working Group. “CINR measurements using the EESM method ”, March 2005, pp.1－6.
[11] WiMAX Forum Application Working Group. “EESM Beta Training in 802.16e system ”, August 2007, pp.1－47.
[12] 3rd Generation Partnership Project. “Technical Specification Group Radio Access Network; Feasibility Study for Orthogonal Frequency Division Multiplexing （OFDM） for UTRAN enhancement （Release 6） ”， f3GPP TR 25.892 V6.0.0（2004-06）.
