同步技術是跳頻通信系統的關鍵技術之一,尤其是在快速跳頻通信系統中,常規跳頻通信通過同步字頭攜帶相關碼的方法來實現同步,但對于快跳頻來說,由于是一跳或者多跳傳輸一個調制符號,難以攜帶相關碼。對此引入雙跳頻圖案方法,提出了一種適用于快速跳頻通信系統的同步方案。采用短碼攜帶同步信息,克服了快速跳頻難以攜帶相關碼的困難。分析了同步性能,仿真結果表明該方案同步時間短、虛警概率低、捕獲概率高,同步性能可靠。 Abstract: Synchronization is one of the key techniques to frequency-hopping communication system, especially in the fast frequency hopping communication system. In conventional frequency hopping communication systems, synchronization can be achieved by synchronization-head which can be used to carry the synchronization information, but for the fast frequency hopping, Because modulation symbol is transmitted by per hop or multi-hop, it is difficult to carry the correlation code. For the limitation of fast frequency hopping in carrying correlation code, a fast frequency-hopping synchronization scheme with two hopping patterns is proposed. The synchronization information is carried by short code, which overcomes the difficulty of correlation code transmission in fast frequency-hopping. The performance of the scheme is analyzed, and simulation results show that the scheme has the advantages of shorter synchronization time, lower probability of false alarm, higher probability of capture and more reliable of synchronization.
上傳時間: 2013-11-23
上傳用戶:mpquest
解壓密碼:www.elecfans.com 隨著微電子技術的迅速發展以及集成電路規模不斷提高,對電路性能的設計 要求越來越嚴格,這勢必對用于大規模集成電路設計的EDA 工具提出越來越高的 要求。自1972 年美國加利福尼亞大學柏克萊分校電機工程和計算機科學系開發 的用于集成電路性能分析的電路模擬程序SPICE(Simulation Program with IC Emphasis)誕生以來,為適應現代微電子工業的發展,各種用于集成電路設計的 電路模擬分析工具不斷涌現。HSPICE 是Meta-Software 公司為集成電路設計中 的穩態分析,瞬態分析和頻域分析等電路性能的模擬分析而開發的一個商業化通 用電路模擬程序,它在柏克萊的SPICE(1972 年推出),MicroSim公司的PSPICE (1984 年推出)以及其它電路分析軟件的基礎上,又加入了一些新的功能,經 過不斷的改進,目前已被許多公司、大學和研究開發機構廣泛應用。HSPICE 可 與許多主要的EDA 設計工具,諸如Candence,Workview 等兼容,能提供許多重要 的針對集成電路性能的電路仿真和設計結果。采用HSPICE 軟件可以在直流到高 于100MHz 的微波頻率范圍內對電路作精確的仿真、分析和優化。在實際應用中, HSPICE能提供關鍵性的電路模擬和設計方案,并且應用HSPICE進行電路模擬時, 其電路規模僅取決于用戶計算機的實際存儲器容量。 The HSPICE Integrator Program enables qualified EDA vendors to integrate their products with the de facto standard HSPICE simulator, HSPICE RF simulator, and WaveView Analyzer™. In addition, qualified HSPICE Integrator Program members have access to HSPICE integrator application programming interfaces (APIs). Collaboration between HSPICE Integrator Program members will enable customers to achieve more thorough design verification in a shorter period of time from the improvements offered by inter-company EDA design solutions.
上傳時間: 2013-11-10
上傳用戶:123312
Trademarks and service marks of Cadence Design Systems, Inc. (Cadence) contained in this document are attributed to Cadence with the appropriate symbol.
上傳時間: 2014-12-31
上傳用戶:hustfanenze
Trademarks and service marks of Cadence Design Systems, Inc. (Cadence) contained in this document are attributed to Cadence with the appropriate symbol.
上傳時間: 2013-10-14
上傳用戶:chukeey
解壓密碼:www.elecfans.com 隨著微電子技術的迅速發展以及集成電路規模不斷提高,對電路性能的設計 要求越來越嚴格,這勢必對用于大規模集成電路設計的EDA 工具提出越來越高的 要求。自1972 年美國加利福尼亞大學柏克萊分校電機工程和計算機科學系開發 的用于集成電路性能分析的電路模擬程序SPICE(Simulation Program with IC Emphasis)誕生以來,為適應現代微電子工業的發展,各種用于集成電路設計的 電路模擬分析工具不斷涌現。HSPICE 是Meta-Software 公司為集成電路設計中 的穩態分析,瞬態分析和頻域分析等電路性能的模擬分析而開發的一個商業化通 用電路模擬程序,它在柏克萊的SPICE(1972 年推出),MicroSim公司的PSPICE (1984 年推出)以及其它電路分析軟件的基礎上,又加入了一些新的功能,經 過不斷的改進,目前已被許多公司、大學和研究開發機構廣泛應用。HSPICE 可 與許多主要的EDA 設計工具,諸如Candence,Workview 等兼容,能提供許多重要 的針對集成電路性能的電路仿真和設計結果。采用HSPICE 軟件可以在直流到高 于100MHz 的微波頻率范圍內對電路作精確的仿真、分析和優化。在實際應用中, HSPICE能提供關鍵性的電路模擬和設計方案,并且應用HSPICE進行電路模擬時, 其電路規模僅取決于用戶計算機的實際存儲器容量。 The HSPICE Integrator Program enables qualified EDA vendors to integrate their products with the de facto standard HSPICE simulator, HSPICE RF simulator, and WaveView Analyzer™. In addition, qualified HSPICE Integrator Program members have access to HSPICE integrator application programming interfaces (APIs). Collaboration between HSPICE Integrator Program members will enable customers to achieve more thorough design verification in a shorter period of time from the improvements offered by inter-company EDA design solutions.
上傳時間: 2013-10-18
上傳用戶:s363994250
圖象如被炸碎一樣,變成大量的碎片飛出來;看看它的SYMBOL 會把你嚇一跳;
標簽: 圖象
上傳時間: 2015-02-26
上傳用戶:teddysha
This an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain
標簽: direct-sequence adaptive receiver spectrum
上傳時間: 2014-01-16
上傳用戶:D&L37
十部經典算法合集 .chm Fundamentals of Data Structures by Ellis Horowitz and Sartaj Sahni PREFACE CHAPTER 1: INTRODUCTION CHAPTER 2: ARRAYS CHAPTER 3: STACKS AND QUEUES CHAPTER 4: LINKED LISTS CHAPTER 5: TREES CHAPTER 6: GRAPHS CHAPTER 7: INTERNAL SORTING CHAPTER 8: EXTERNAL SORTING CHAPTER 9: SYMBOL TABLES CHAPTER 10: FILES APPENDIX A: SPARKS APPENDIX B: ETHICAL CODE IN INFORMATION PROCESSING APPENDIX C: ALGORITHM INDEX BY CHAPTER
標簽: Fundamentals Structures Horowitz PREFACE
上傳時間: 2015-05-19
上傳用戶:維子哥哥
了解linux設備驅動程序的基本原理,包括symbol device coding,debug and testing。
上傳時間: 2015-06-12
上傳用戶:6546544
The same two-stage decoder as above. However, when transforming the symbols prior to Viterbi decoding, the amplitude information is ignored and only the phase of the received symbol is employed in the metric computation stage.
標簽: transforming two-stage However decoder
上傳時間: 2015-07-05
上傳用戶:sevenbestfei