<li id="ykaci"></li> Due to the asymmetry between the amount of data traffic in the downlink and uplink direction of nowadays and future wireless networks, a proper design of the transceivers in the broadcast channel is inevitable in order to satisfy the users’ demands on data rate and transmission quality. This book deals with the optimi- zation-based joint design of the transmit and receive filters in a MIMO broadcast channel in which the user terminals may be equipped with several antenna ele- ments.
上傳時間： 2020-05-28
上傳用戶：shancjb
When we started thinking about writing this book, we had been working together for more than five years on the borderline between propagation and signal processing.Therefore, it is not surprising that this book deals with propagation models and design tools for MIMO wirelesscommunications.Yet, thisbookshouldconstitutemorethanasimplecombination of these two domains. It hopefully conveys our integrated understanding of MIMO, which results from endless controversial discussions on various multi-antenna related issues, as well as various interactions with numerous colleagues. Obviously, this area of technology is so large that it was beyond our aim to cover all aspects in details. Rather, our goal has been to provide researchers, R&D engineers and graduate students with a comprehensive coverage of radio propagation models and space–time coding techniques.
標簽： Communications5 Wireless MIMO
上傳時間： 2020-05-28
上傳用戶：shancjb
The family of recent wireless standards included the optional employment of Multiple-Input Multiple-Output(MIMO)techniques.This was motivatedby the observationaccordingto the classic Shannon–Hartley law that the achievable channel capacity increases logarithmically with the transmit power. In contrast, the MIMO capacity increases linearly with the number of transmit antennas, provided that the number of receive antennas is equal to the number of transmit antennas. With the further proviso that the total transmit power is increased in proportion to the number of transmit antennas, a linear capacity increase is achieved upon increasing the transmit power, which justifies the spectacular success of MIMO systems.
標簽： Multi-Functional Systems MIMO
上傳時間： 2020-05-31
上傳用戶：shancjb
The family of recent wireless standards included the optional employment of MIMO tyechniques. This was motivated by the observation according to the classic Shannon-Hartley law the achiev- able channel capacity increases logarithmically with the transmit power. By contrast, the MIMO capacity increases linearly with the number of transmit antennas, provided that the number of receive antennas is equal to the number of transmit antennas.
標簽： Multi-Functional Near-Capacity Systems MIMO
上傳時間： 2020-05-31
上傳用戶：shancjb
The purpose of this book is to introduce the concept of the Multiple Input Multiple Output (MIMO) radio channel, which is an intelligent communication method based upon using multiple antennas. The book opens by explaining MIMO in layman’s terms to help stu- dents and people in industry working in related areas become easily familiarised with the concept. Therefore the structure of the book will be carefully arranged to allow a user to progress steadily through the chapters and understand the fundamental and mathematical principles behind MIMO through the visual and explanatory way in which they will be written. It is the intention that several references will also be provided, leading to further reading in this highly researched technology.
上傳時間： 2020-05-31
上傳用戶：shancjb
[中華人民共和國藥典中藥彩色圖集].Chineseedicine.Dictionary.with.Pictures
標簽： Chineseedicine Dictionary Pictures with
上傳時間： 2013-05-18
上傳用戶：eeworm
用DirectX制作高級動畫-[Advanced.Animation.with.DirectX]
標簽： DirectX Animation Advanced with
上傳時間： 2013-05-23
上傳用戶：eeworm
用Python,Lua和Ruby語言設計游戲-Game.Programming.with.Python.Lua.And.Ruby
標簽： Python Ruby Programming Lua
上傳時間： 2013-07-16
上傳用戶：eeworm
用DirectX編寫RPG游戲-Programming.Role.Playing.Games.with.DirectX
標簽： DirectX Programming Playing Games
上傳時間： 2013-06-16
上傳用戶：eeworm
Turbo碼是一類并行級聯的系統卷積碼，它是在綜合級聯碼、最大后驗概率(MAP)譯碼、軟輸入軟輸出及迭代譯碼等理論基礎上的一種創新。Turbo碼的基本原理是通過對編碼器結構的巧妙設計，多個子碼通過交織器隔離進行并行級聯編碼輸出，增大了碼距。譯碼器則以類似內燃機引擎廢氣反復利用的機理進行迭代譯碼以反復利用有效信息流，從而獲得卓越的糾錯能力。計算機仿真表明，Turbo碼不但在加性高斯噪聲信道下性能優越，而且具有很強的抗衰落、抗干擾能力，當交織長度足夠長時，其糾錯性能接近香農極限。 FPGA(FieldProgrammableGateArray)，即現場可編程門陣列，是在PAL、GAL、EPLD等可編程器件的基礎上進一步發展的產物。FPGA技術具有大規模、高集成度、高可靠性、設計周期短、投資小、靈活性強等優點，逐步成為復雜數字硬件電路設計的理想選擇。 本論文以東南大學移動通信實驗室B3G課題組提出的“支持多天線的廣義多載波無線傳輸技術”(MIMO-GMC)為背景，分析了Turbo譯碼算法，并針對MIMO-GMC系統的迭代接收機中所采用的外信息保留和聯合檢測譯碼迭代的特點，完成了采用滑動窗Log-MAP算法的軟輸入、軟輸出的Turbo譯碼器的設計。整個譯碼器模塊的設計采用Verilog語言描述，并在VirtexⅡPro系列FPGA芯片上實現。
上傳時間： 2013-04-24
上傳用戶：shanml
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