基于OFDM的無線寬帶系統(tǒng)仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
我的文件管理設(shè)計(jì)中對(duì)于文件管理的功能主要有以下幾個(gè)：輸入文件（input），
從文件列表中刪除一個(gè)記錄（delete a record from list），保存文件（save），
查找文件（search record on table），文件的列表（list）
KML 2 SHP Converter for points, lines and polygons
Extension for ArcView 3.x will convert KML files from Google Earth to ShapeFiles, adding a new field called “Name” in the shapefile attribute table, automatically storing the name entered on the “Google Earth – New” window.
This example demonstrates how the C8051F06x SMBus interface can communicate
// with a 256 byte I2C Serial EEPROM (Microchip 24LC02B).
// - Interrupt-driven SMBus implementation
// - Only master states defined (no slave or arbitration)
// - Timer4 used by SMBus for SCL low timeout detection
// - SCL frequency defined by <SMB_FREQUENCY> constant
Sqlserver2000壓力測(cè)試
數(shù)據(jù)庫請(qǐng)自己建，附腳本。不懂的可以發(fā)郵件問我：killwolf@163.com
10萬
109640ms 插入
23078ms 清空
20萬
216281ms
8391馬上
40萬：
416781
9381
if exists (select * from dbo.sysobjects where id = object_id(N [dbo].[StuInfo] ) and OBJECTPROPERTY(id, N IsUserTable ) = 1)
drop table [dbo].[StuInfo]
GO
CREATE TABLE [dbo].[StuInfo] (
[StuID] [float] NULL
) ON [PRIMARY]
GO
