Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.
標簽： synchronization Carrier-phase multiplicativ approached
上傳時間： 2013-11-28
上傳用戶：windwolf2000
In this paper, a new family of Cassinian wave-guides is proposed, simulating and calculation are finished with CST Microwave Studio that based on Finite Integral Technique (FIT), and some results are given. Electromagnetic field mode type of it is TE, electromagnetic field is stronger near neck region, and some resonance frequencies appear. The new Cassinian curve wave-guides will possess higher power than ones of the rectangular and elliptic wave-guides because the height at the position where maximal electric field occurs is smaller.
標簽： calculation wave-guides simulating Cassinian
上傳時間： 2014-01-18
上傳用戶：netwolf
ST7529液晶驅動 The ST7529 is a driver & controller LSI for 32 gray scale graphic dot-matrix liquid crystal display systems. It generates 255 Segment and 160 Common driver circuits. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI), 8-bit/16-bit parallel or IIC display data and stores in an on-chip display data RAM. It performs display data RAM read/write operation with no external operating clock to minimize power consumption. In addition, because it contains power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components.
標簽： 7529 controller dot-matrix graphic
上傳時間： 2013-12-02
上傳用戶：奇奇奔奔
S3C2410 上面的關于SMS 完整工程源代碼，包括LCD、Flash、DMA、mmu、Power、Timer等驅動，以及SMS聲音文件
上傳時間： 2013-12-11
上傳用戶：Yukiseop
You know the rudiments of the SQL query language, yet you feel you aren t taking full advantage of SQL s expressive power. You d like to learn how to do more work with SQL inside the database before pushing data across the network to your applications. You d like to take your SQL skills to the next level.
標簽： advantage the rudiments you
上傳時間： 2014-01-18
上傳用戶：xz85592677
The Capacity of a MIMO channel with nt transmit antenna and nr recieve antenna is analyzed. The power in parallel channel (after decomposition) is distributed as water-filling algorithm
標簽： antenna The Capacity analyzed
上傳時間： 2016-02-01
上傳用戶：225588
一個實際的商業項目，給一家制造業企業定制開發的 有登陸系統、計件工資和記時工資、明細統計報表、匯總報表，能導出到Excel,等等 并能生成安裝包，是一個完整的項目 數據庫 access密碼為 power vb.net2003開發
上傳時間： 2014-01-19
上傳用戶：Thuan
The first task at hand is to set up the endpoints appropriately for this example. The following code switches the CPU clock speed to 48 MHz (since at power-on default it is 12 MHz), and sets up EP2 as a Bulk OUT endpoint, 4x buffered of size 512, and EP6 as a Bulk IN endpoint, also 4x buffered of size 512. This set-up utilizes the maximum allotted 4-KB FIFO space. It also sets up the FIFOs for manual mode, word-wide operation, and goes through a FIFO reset and arming sequence to ensure that they are ready for data operations
標簽： appropriately The endpoints following
上傳時間： 2013-12-02
上傳用戶：dianxin61
With the successful implementation of XML Schema, developers are learning how to increase productivity, improve software reliability, minimize development time, and decrease time to market. This in-depth reference is an all-in-one resource designed to help developers leverage the power and potential of XML schemas by offering a complete roadmap to their creation, design, and use.
標簽： implementation successful developers productivi
上傳時間： 2013-12-08
上傳用戶：gxrui1991
短消息二次開發接口以動態連接庫的形式提供，支持所有Windows平臺下開發語言，如Visual C++, VB, FoxPro , C++ Builder, Delphi, Power Builder和Lotus Notes等。
上傳時間： 2013-12-23
上傳用戶：古谷仁美
