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  • LT5528 WCDMA ACPR和AltCPR测量

      ACPR (adjacent channel power ratio), AltCPR (alternatechannel power ratio), and noise are important performancemetrics for digital communication systems thatuse, for example, WCDMA (wideband code division multipleaccess) modulation. ACPR and AltCPR are bothmeasures of spectral regrowth. The power in the WCDMAcarrier is measured using a 5MHz measurement bandwidth;see Figure 1. In the case of ACPR, the total powerin a 3.84MHz bandwidth centered at 5MHz (the carrierspacing) away from the center of the outermost carrier ismeasured and compared to the carrier power. The resultis expressed in dbc. For AltCPR, the procedure is thesame, except we center the measurement 10MHz awayfrom the center of the outermost carrier.

    标签: AltCPR WCDMA 5528 ACPR

    上传时间: 2013-11-02

    上传用户:maricle

  • java 通用连接 MS SQL 的写法

    java 通用连接 MS SQL 的写法 ,给新手用吧 dbconnect dbc dbc = new dbconnect() java.sql.Statement stmt = null if (dbc.connectDB()) {

    标签: java SQL MS 连接

    上传时间: 2013-12-28

    上传用户:gmh1314

  • 高精度低温漂CMOS基准源的设计与比较-76页

    高精度低温漂CMOS基准源的设计与比较-76页

    标签: cmos

    上传时间: 2021-10-17

    上传用户: