In this study, a computer simulation model for library CD-ROM LAN systems was created. Using this model, the system optimization problems were examined. The simulation model imitated the process of the actual decision variables changing their values and generated the corresponding results. Under a certain system environment, if the values of decision variables are changing, the system performances are getting changed also. This study investigated these relationships with the created model. The system users' interarrival time, service time, and other relevant data were collected on randomly selected days in a university library. For data collection, both of the observation and the system automatic metering software were used. According to the collected data, a discrete events simulation model was created with GPSS/H. The simulation model was proven valid and accurate by a pilot test and by the calculation with queuing theory. Statistical tests were used for data comparison and analysis. In addition, animation technique was used to show the simulation process by using Proof Animation. By this technique, the simulation process was monitored on the screen.

El presente trabajo de tesis tiene como finalidad, explicar cómo las redes definidas por software se convierten en un elemento clave de una estrategia de diferenciación para las redes de campus. Mediante la priorización del consumo de tráfico de datos y la administración de la red LAN a través de un controlador SDN que permita distribuir adecuadamente el ancho de banda, reducir el tiempo de comunicación entre los dispositivos de red y gestionar la red adecuadamente en la organización. En el primer capítulo, se presentará los aspectos introductorios del proyecto. En esta parte, se describirá la organización objetivo y su campo de acción, la problemática a la cual está expuesta la organización. Además, se planteará el objetivo general y los objetivos específicos del proyecto y también, la justificación, los indicadores de logro. así como el estado del arte que comprende la solución propuesta. En el segundo capítulo, se detallará las tecnologías asociadas a las redes definidas por software y toda información sujeta a este tema de investigación. A partir de los cuales, se identificarán el contexto, la muestra, el diseño principal y los procedimientos a realizar. Asimismo, se analizarán normas, estándares, políticas y buenas prácticas usadas para el tema de investigación. En el tercer capítulo, se plantea el problema identificado en la organización objetivo. Analizando su alcance, causa e impacto en la organización. De igual manera, se describirá en detalle, el entorno donde será desplegada la solución y los requerimientos necesarios para cumplir con el tema propuesto. En el cuarto capítulo, la propuesta del diseño de red definida por software será desarrollada, en donde se elaborarán las especificaciones y seleccionarán los recursos que logren cumplir el diseño de la solución. Finalmente, en el quinto capítulo se realizará la evaluación mediante pruebas y resultados que serán debidamente justificados para el logro del proyecto de tesis. / The purpose of this tesis is to explain how software-defined networks become a key element of a differentiation strategy for campus networks. By prioritizing the consumption of data traffic and managing the LAN network through an SDN controller that allows to properly distribute the bandwidth, reduce the communication time between network devices and manage the network properly in the organization. In the first chapter, the introductory aspects of the project will be presented. In this part, the target organization and its field of action will be described, the problem to which the organization is exposed. In addition, the general objective and the specific objectives of the project will be raised, as well as the justification, the achievement indicators. as well as the state of the art that comprises the proposed solution. In the second chapter, the technologies associated with software-defined networks and all information subject to this research topic will be detailed. From which, the context, the sample, the main design and the procedures to be carried out will be identified. Likewise, norms, standards, policies and good practices used for the research topic will be analyzed. In the third chapter, the problem identified in the target organization is posed. Analyzing its scope, cause and impact on the organization. Likewise, the environment where the solution will be deployed and the necessary requirements to comply with the proposed topic will be described in detail. In the fourth chapter, the software-defined network design proposal will be developed, where the specifications will be elaborated and the resources that manage to fulfill the solution design will be selected. Finally, in the fifth chapter, the evaluation will be carried out through tests and results that will be duly justified for the achievement of the tesis. / Tesis

This dissertation discusses the development of alternative science curriculum materials for a secondary schooling context where English, the medium of instruction, is a second language for both teachers and students. The research is located in an interpretative ethnographic framework and the data gathered during the classroom-based trialing of the materials highlights the vital role of language in the teaching and learning of school science. An interactive reading model coupled with a discourse approach to text analysis explores some of the language difficulties which black students experience with their science textbooks. That many students fail to develop adequate reading strategies is identified as lying at the heart of many learning problems. It is suggested that the key to comprehension is instruction from a base of more accessible text materials. Furthermore, although science practical work does not automatically advance students' knowledge and understanding, relevant and contextualised learning activities do equip students to become more self-directed and reflective learners of science.

This MSc Thesis focuses on principles, practical performability and security against four attacks used in contemporary local-area networks: CAM Table Overflow capable of capturing traffic in switched networks, ARP Man-in-the-Middle, whose target is to redirect or modify traffic and against two variants of VLAN Hopping attack allowing a hacker to send and capture data from VLANs he has no access to.

本研究探討「景觀法（草案）」施行前後，對於現行都市計畫體系等所產生改變，以及未來在景觀法下景觀計畫，將不再僅為都市計畫定期通盤檢討實施辦法第八條內都市設計應辦事項，乃提升為更上位指導性計畫（法定程序與計畫位階），以充份發揮在地所屬地方特色且能因地制宜。因此，本研究乃依據政府當前所施行主要「政策趨向」與「法令規範」為基礎，從「景觀計畫」理念涵構、內容範疇、架構體系、操作方法等面向來加以探究。並於理論研議之後再透過案例模擬，以「宜蘭縣政府」為主導單位來探討合理推動「宜蘭縣政中心地區景觀計畫」之操作程序與策略指引研議。以下是本研究在研討過程當中，根據理論與模擬結果，所歸納出來主要成果，並可供未來發展景觀計畫工作時建議方向。其一為政策機制：1.重視計畫擬訂過程整合、2.計畫主體縣（市）政府、3.設景觀計畫審議委員會、4.落實行政專業專職人員、5.提供修訂上位計畫參據、6.建蔽率與容積率的檢討、7.景觀計畫之行銷與考核、8.鼓勵公私合夥廣籌財源等。其二為管理維護：1.定期與不定期資料蒐集、2.城鄉景觀資源有效整合、3.訂定管理維護獎懲條例、4.成長管理的監測與評估、5.嚴格監督整體開發成果、6.提供經驗技術專責單位、7.整合相關查報取締工作、8.教育民眾自我意識提升、9.落實環境宣導教育推廣、10.閒置土地綠美化等。其三為案例模擬：1.通盤檢討落實、2.審議制度建構、3.當地民眾參與、4.自治條例研擬、5.預期成效模擬、6.行銷策略推廣等。 / The study process is based on the "Qualitative Research- Exploratory & Conclusive Research" & assistant by "Practical Prove" of the landscape planning framework system and operation procedure. In past years, the effort to promote townscape so as to create a rural feel has demonstrated its results in many places. However, it has always lacked the guidance of a prospectus and long- term planning. Local development has been the focus of attention for a long time; there are important theme for discussion, is a local intent of the landscape planning is to complement the defeat of two- dimensional arrangement of traditional urban planning and to achieve three- dimensional control of the townscape. Furthermore, Landscape planning can also integrate the activities in city, rural and shape the unique townscape characteristics. A practice of the landscape law will be a trend in Taiwan. This study is consisted of the three parts; namely basic study, the analysis and verification, and remedies. This study would probe concepts and theories of sustainable townscape via the relative literatures. To review the bottom- up processing & top- down processing on the relative literatures and theories- probes the concepts, a theory, control elements of the landscape planning, and furthermore, establishes the research framework system- consequence strategies of behavior change and antecedent strategies of behavior change of this study; the landscape law and institutions should fit the needs of landscape planning. And the researcher will make clear the operating mechanism of the landscape planning framework system in every law level according to the enforceable contents of current urban planning. The processing procedure timeline will be improving and thus the landscape law will be satisfied. Implementation for the plan is divided into current stage and future stage, according to the physical environment potentials, constraints and the planning goals. Thus the government authorities show the confident of implementing the planning and win public trust. In a long run, continuing the sustainable development process. For the principles of setting up the regulation, it needs to clearly explain on the three levels, the goals, objectives and criteria. Furthermore, we try to apply the concepts of landscape law in the landscape planning of case and discover the potential and limits of the local region with the analysis methodology of the S.W.O.T. analysis method to construct a reasonable and suitable landscape development strategy of the "I- Lan county government development area". Finally, the purpose is to understand whether the local administration institution does suit introduces on the "landscape law and planning" in Taiwan. Besides, on this research also attempt to consult the factors that affect the landscape law & planning development of Taiwan today, and then to bring up the vision of the future in Taiwan. All these efforts enhance Taiwan townscape’ style shape and characterize on the districts with a sustainable development townscape vision. / 目 錄 中文摘要i 英文摘要ii 誌 謝iv 目 錄v 表 目 錄viii 圖 目 錄ix 第一章 緒論1 1.1 研究背景1 1.2 研究動機與目的5 1.2.1 研究動機5 1.2.2 研究目的8 1.3 研究範疇與架構10 1.3.1 研究範疇10 1.3.2 研究架構11 1.4 研究方法與流程13 1.4.1 研究方法13 1.4.2 研究流程15 1.5 名詞定義18 第二章 文獻回顧21 2.1 臺灣城鄉風貌問題21 2.2 創造城鄉新風貌行動方案趨勢26 2.2.1 計畫回顧26 2.2.2 計畫探討29 2.3 永續城鄉觀點34 2.3.1 基本觀念探討35 2.3.2 發展思考脈絡38 2.4 景觀計畫涵蓋範疇芻議49 2.4.1 相關文獻回顧50 2.4.2 計畫內容研議52 2.5 小結58 第三章 景觀計畫架構體系59 3.1 景觀計畫定位59 3.2 景觀法（草案）探討60 3.2.1 擬訂背景60 3.2.2 綜合探討65 3.3 景觀計畫體系衍議66 3.3.1 現行都市計畫體系對於景觀計畫影響67 3.3.2 未來景觀計畫於都市計畫體系中定位73 3.4 景觀計畫架構探討79 3.4.1 景觀計畫架構體系79 3.4.2 都市計畫位階內容84 3.5 小結95 第四章 景觀計畫操作方法97 4.1 景觀計畫執行97 4.2 景觀計畫操作範疇99 4.2.1 推動程序99 4.2.2 調查內容102 4.3 景觀計畫操作方法111 4.3.1 規劃認知111 4.3.2 規劃步驟112 4.4 景觀計畫操作建議129 4.4.1 政策機制的操作方向129 4.4.2 管理維護的操作方向131 4.5 小結133 第五章 宜蘭縣政中心地區景觀計畫操作模擬（先期研究）135 5.1 宜蘭縣（研究範圍）環境調查分析135 5.1.1 地區發展背景與政策定位136 5.1.2 相關上位計畫與發展計畫139 5.1.3 研究範圍景觀資源的分析140 5.1.4 小結142 5.2 宜蘭縣政中心地區（計畫範圍）環境調查分析142 5.2.1 計畫地區發展背景與定位142 5.2.2 計畫地區主要與細部計畫146 5.2.3 計畫範圍景觀資源的分析148 5.2.4 小結156 5.3 蘭陽地區（案例研析）地域性規劃設計案例探討156 5.3.1 規劃案例一：冬山河親水公園159 5.3.2 規劃案例二：羅東運動公園162 5.3.3 設計案例一：宜蘭縣政中心行政大樓165 5.3.4 設計案例二：宜蘭厝168 5.3.5 小結172 第六章 宜蘭縣政中心地區景觀計畫操作模擬（計畫整合）173 6.1 宜蘭縣政中心地區相關景觀議題整合173 6.1.1 自然景觀向度議題175 6.1.2 人文景觀向度議題177 6.1.3 實質景觀向度議題179 6.1.4 ＳＷＯＴ分析181 6.2 宜蘭縣政中心地區景觀計畫策略指引186 6.2.1 景觀計畫發展願景與目標187 6.2.2 景觀計畫擬訂標的與原則191 6.2.3 小結202 6.3 宜蘭縣政中心地區景觀計畫架構體系與操作建議207 6.3.1 縣（市）綜合發展計畫位階體系架構207 6.3.2 都市計畫主要計畫位階景觀計畫內容213 6.3.3 都市計畫細部計畫位階景觀計畫內容216 6.3.4 宜蘭縣政中心地區景觀計畫操作建議221 第七章 結論與建議229 7.1 結論229 7.2 建議231 參考文獻237 附錄 A 宜蘭縣政中心地區景觀計畫發展原則（策略指引）245 B 宜蘭縣相關景觀資源整理289 C 宜蘭縣政中心地區建築及土地使用分區管制要點305 D 宜蘭縣建築管理自治條例311 E 景觀法（草案）條文內容說明317 F 創造城鄉新風貌行動方案整理323 G 相關法令規章331 H 研究文獻評析335 作者簡介339 表目錄 表2.1 傳統城鄉規劃與永續城鄉規劃的差異性41 表2.2 相關文獻回顧整理與應用51 表3.1 景觀法（草案）計畫架構與本研究計畫層級內容比較82 表4.1 公部門擬訂景觀計畫之計畫內容與計畫範疇99 表4.2 自然景觀向度之計畫調查內容103 表4.3 人文景觀向度之計畫調查內容105 表4.4 實質景觀向度之計畫調查內容108 表4.5 落實景觀計畫執行方法與執行範疇125 表4.6 景觀計畫構成比較分析134 表5.1 研究範圍（宜蘭縣）相關景觀資源；對於「景觀計畫」應用屬性140 表6.1 「綜合策略評估（SWOT）」宜蘭縣政中心地區景觀影響因子構成（一）181 表6.2 「綜合策略評估（SWOT）」宜蘭縣政中心地區景觀因應策略矩陣（二）182 表6.3 宜蘭縣政中心地區景觀計畫架構內容204 表6.4 「主要計畫位階」宜蘭縣政中心地區景觀計畫比較（一）214 表6.5 「主要計畫位階」宜蘭縣政中心地區景觀計畫比較（二）215 表6.6 「細部計畫位階」宜蘭縣政中心地區景觀計畫比較（一）217 表6.7 「細部計畫位階」宜蘭縣政中心地區景觀計畫比較（二）219 表6.8 落實宜蘭縣政中心地區景觀計畫執行方法與執行範疇223 圖目錄 圖1.1 宜蘭縣政中心區位示意圖11 圖1.2 宜蘭縣政中心主要發展區11 圖1.3 研究理論架構與範疇12 圖1.4 研究方法架構與範疇16 圖1.5 研究流程17 圖1.6 永續景觀﹣德國漢堡20 圖1.7 自然景觀﹣宜蘭石牌20 圖1.8 人文景觀﹣宜蘭縣政中心20 圖1.9 實質景觀﹣台北士林20 圖2.1 永續觀念下生態規劃概念﹣以基地（小）尺度開發為例44 圖2.2 計畫架構層次示意圖54 圖2.3 景觀計畫架構內容初擬57 圖3.1 歷年來創造城鄉新風貌政策推動主要演進點62 圖3.2 景觀法（草案）計畫體系示意圖64 圖3.3 狹義屬性景觀計畫體系72 圖3.4 廣義屬性景觀計畫體系78 圖3.5 景觀計畫架構體系初擬80 圖3.6 景觀計畫行政體系初擬81 圖3.7 主要計畫位階景觀計畫架構與範疇89 圖3.8 細部計畫位階景觀計畫架構與範疇94 圖4.1 景觀計畫執行架構初擬98 圖4.2 落實景觀計畫民眾參與執行方法122 圖4.3 臺灣地區實施景觀計畫操作流程127 圖5.1 宜蘭縣區位分析137 圖5.2 宜蘭縣政中心地區計畫發展構想144 圖5.3 宜蘭縣政中心地區都市計畫範圍示意圖145 圖5.4 宜蘭縣政中心地區都市計畫主要發展區145 圖5.5 縣政中心主要發展區公共設施分佈圖145 圖5.6 縣政中心主要發展區公共設施紋理圖145 圖5.7 縣政中心主要發展區土地使用分區圖145 圖5.8 縣政中心主要發展區土地使用紋理圖145 圖5.9 宜蘭市區﹣舊街區紋理比較151 圖5.10 羅東市區﹣舊街區紋理比較151 圖5.11 宜蘭縣政中心地區城鄉風貌結構紋理演變進程152 圖5.12 景觀資源分佈﹣社區發展現況部份153 圖5.13 景觀資源分佈﹣人文景觀現況部份153 圖5.14 景觀資源分佈﹣交通系統現況部份154 圖5.15 景觀資源分佈﹣公共設施現況部份154 圖5.16 景觀資源分佈﹣植栽景觀現況部份155 圖5.17 景觀資源分佈﹣夜間景觀現況部份155 圖5.18 冬山親水公園﹣防洪與遊憩157 圖5.19 羅東運動公園﹣教育與休閒157 圖5.20 縣政行政大樓﹣機能與公園157 圖5.21 宜蘭民居形塑﹣氣候與模式157 圖5.22 冬山河親水公園規劃手法圖示說明161 圖5.23 羅東運動公園規劃手法圖示說明（一）163 圖5.24 羅東運動公園規劃手法圖示說明（二）164 圖5.25 宜蘭縣政中心行政大樓設計手法圖示說明167 圖5.26 宜蘭厝設計手法圖示說明171 圖6.1 宜蘭縣內高山景觀資源175 圖6.2 宜蘭縣內溪流景觀資源175 圖6.3 宜蘭縣內平原景觀資源175 圖6.4 宜蘭縣內田園景觀資源175 圖6.5 宜蘭縣內山地不當破壞175 圖6.6 宜蘭意象所在景觀資源176 圖6.7 宜蘭多樣豐富景觀資源176 圖6.8 宜蘭縣內河川景觀資源176 圖6.9 宜蘭縣內海岸景觀資源176 圖6.10 地區農村產業景觀資源176 圖6.11 宜蘭風俗民情景觀資源177 圖6.12 地區人文歷史古蹟資源177 圖6.13 地區竹圍農舍景觀資源177 圖6.14 地區周邊土地利用現況177 圖6.15 國道北宜高速公路現況178 圖6.16 北迴線鐵路的發展現況178 圖6.17 計畫區內風貌發展現況178 圖6.18 計畫區內日間景觀現況178 圖6.19 計畫區內夜間景觀現況178 圖6.20 台九省道日間景觀現況179 圖6.21 台九省道夜間景觀現況179 圖6.22 內環道路日間景觀現況179 圖6.23 內環道路夜間景觀現況179 圖6.24 集散道路日間景觀現況179 圖6.25 集散道路夜間景觀現況179 圖6.26 外環道路日間景觀現況180 圖6.27 外環道路夜間景觀現況180 圖6.28 凱旋路兩側的連續樟樹180 圖6.29 土地區段徵收整地現況180 圖6.30 地區內原有栽植的果樹180 圖6.31 地區舊存社區建築現況180 圖6.32 城鄉整體景觀（地景）風貌發展概念圖199 圖6.33 適當保留邊緣農業區避免開發無限蔓延199 圖6.34 鄉土樹種為主外來樹種為輔達適地適樹199 圖6.35 透過生態施工方法以降低開發影響程度199 圖6.36 落實鄉土性生態教育與保育觀念的紮根199 圖6.37 營造整體秩序與風格形塑獨有城鄉意象200 圖6.38 配合計畫發展塑造各分區使用空間意象200 圖6.39 計畫單元整體開發營造分區風格與意象200 圖6.40 配合分區使用特性促使新舊建築間和諧200 圖6.41 配合周遭的地景或街景形塑場所自明性200 圖6.42 既有空間綠點的增加提升整體綠美化量200 圖6.43 配合各分區法定空地退縮進行整體設計200 圖6.44 提供多目標活動使用的開放空間或綠地200 圖6.45 設施應與周邊環境結合以體現當地氣候201 圖6.46 設施應適度的加入環境教育與教化功能201 圖6.47 服務設施應透過民眾參與體現當地風格201 圖6.48 服務設施應配合多目標使用與教化功能201 圖6.49 區內建立適當比例混植密林區或荒野區201 圖6.50 透過多層次生態綠化結合休憩活化身心201 圖6.51 針對區內閒置空間進行綠美化環境改善201 圖6.52 採不同時序開花植栽創造四季色彩變化201 圖6.53 重要地標照明以形塑地區夜間視覺焦點202 圖6.54 透過對歷史建築適當照明營造夜間氣氛202 圖6.55 重要交通路徑應加強夜間照明視覺引導202 圖6.56 依分區屬性給予適當照明營造夜間氣氛202 圖6.57 宜蘭縣政中心地區景觀計畫架構層次203 圖6.58 宜蘭縣政中心地區景觀計畫行政體系初擬208 圖6.59 「狹義屬性」宜蘭縣政中心地區景觀計畫體系210 圖6.60 「廣義屬性」宜蘭縣政中心地區景觀計畫體系212 圖6.61 「主要計畫位階」宜蘭縣政中心地區景觀計畫架構與範疇213 圖6.62 「細部計畫位階」宜蘭縣政中心地區景觀計畫架構與範疇216 圖6.63 宜蘭縣政中心地區景觀計畫執行架構初擬222

This study has developed a method to create an, to a big extent, automated testing system for NMP (Networked Music Performance) communication over LAN and WAN to be able to benchmark the UDP streaming engine JackTrip using a client-server model. The method is not locked into using JackTrip only, it could be used to do experiments with other engines too. The study tried to answer the question if latency correlates to amount of correctly aligned audio, and to what extent the audio is correctly aligned in respect to tolerated latency (based on earlier research) when at least two musicians remote-conducting musical pieces together. There were 13 different buffer settings tested, which used no redundancy and redundancy of 2, and which were sent through 4 different LAN/WAN-scenarios. A big dataset was produced, with about 82 minutes’ worth of audio per test. To post-process the data a phase cancelling method was used to measure correctly aligned audio, while the latency was measured by counting the number of samples from the start of each audio file to the first sample that were not null or not under a certain threshold. The results showed clear correlations of buffer sizes impact of latency and amount of correctly audio sent over the network. If the buffer sizes are greater, it will produce higher latency and increase the amount of correctly aligned audio, and on the opposite side, if using less buffer, it will produce lower latencies and less correctly aligned amount of audio. The study also showed that there was very little impact of using higher redundancies, both regarding latency and amount of correctly audio. When analysing the amount of correct data when respecting the tolerated level of latency, the study showed a support for correctly aligned amount of streamed audio up to 65% when using JackTrip. / Den här studien har utvecklat en metod för att skapa ett, till stor del, automatiserat testsystem för NMP-kommunikation (Networked Music Performance) över LAN och WAN för att kunna prestandatesta den UDP-strömmande ljudmotorn JackTrip, med en klient-server-modell. Metoden är inte låst till att endast användas med JackTrip, den kan användas för att göra experiment med andra motorer också. Studien försökte svara på frågorna om latens korrelerar med mängden korrekt justerat ljud, och till hur stor del som ljudet är korrekt justerad med hänsyn till tolererbar latens (baserat på tidigare undersökning) när minst två musiker fjärrmusicerar tillsammans. Det testades 13 olika buffertinställningar, som använde ingen redundans samt med redundans på 2, och som kördes genom 4 olika LAN / WAN-scenarier. En stor datamängd producerades, med ca 82 minuters ljud per test. För att post-bearbeta data användes en fas-elimineringsmetod för att mäta mängden korrekt justerat ljud, medan latensen var uppmätt genom att räkna antalet samplingar från starten av varje ljudfil till den första samplingen som inte var innehållslös eller inte under ett specifikt tröskelvärde. Resultaten visade tydlig korrelation av buffertstorlekens påverkan av latens och mängd korrekt ljud skickat över nätverket. Om buffertstorlekarna är större kommer det att ge högre latens och öka mängden korrekt justerat ljud, och tvärtom, om mindre buffert används, kommer det att ge lägre latens och mindre rätt justerad mängd ljud. Studien visade också att det gav mycket liten effekt att använda högre redundans, både vad gällande latens och mängden korrekt ljud.  Vid analys av mängden korrekta data med hänsyn till den tolererade latensnivån visade studien ett stöd för korrekt justerat mängd av strömmat ljud upp till 65% vid användning av JackTrip.

International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / Current changes in the way that large flight test systems are utilized have affected the industry’s methodology in both the early design phases and in the implementation of nextgeneration hardware and software. The reduction of available RF spectrum, the implementation of packet telemetry methods and systems, and a desire to implement commercial-off-the-shelf (COTS) hardware are only some of the considerations that telemetry systems integrators and product houses have to face. This paper describes how test methodology changes affect current large systems design at both government test ranges and at airframe/missile manufacturer test facilities. In addition, consideration is given to the area of increased processing power as it affects hardware and software design, the leveraging of such current and future telecommunications technology as network switch technology and compression, cross utilization, standardized technology, and the movement toward platform-independent software.

abstract / toc / Chinese / Master / Master of Philosophy

Approved for public release, distribution is unlimited / Synchronization of orthogonal frequency-division multiplexed (OFDM) signals is significantly more difficult than synchronization of a single-carrier system. The recently approved IEEE Standard 802.11g specifies a packet-based OFDM system that provides a basis for the discussion of OFDM synchronization in a packet-based environment. Algorithms that synchronize the receiver carrier demodulation frequency and phase, the data frame, the OFDM symbol timing, and the data symbol timing are discussed and analyzed in an AWGN channel. System View simulation is used to implement the frame and carrier frequency synchronization algorithms, where the performance of these algorithms is analyzed and they are shown to be useful detection algorithms for Standard 802.11g signal reception. / Lieutenant Commander, United States Navy

<p>There are several standards for wireless communication. People that are involved in computers and networking recognize names like Bluetooth, HiperLAN and IEEE 802.11. The last one was standardized in 1997 [2,6]and has begun to reach acceptance as a solid ground for wireless networking. A fundamental part of an IEEE 802.11 node is the Medium Access Controller, or MAC. It establishes and controls communication with other nodes, using a physical layer unit. </p><p>The work has been carried out as final project at Linkopings Universitet, it has been about the improvement of the functions of MAC layer. I have developed some of the required functions that PUM uses to interact with the MAC layer. Because of that, I have implemented the Reception functions of MAC layer, having the possibility of using short control frames RTS/CTS to minimize collision.</p>