-
qpsk
摘 要:根据HFC网络上行信道的特性,建立了信道模型 分析了上行信道中存在的各种噪声对QPSK
调制技术的影响。结果表明在C /N (传输信道载噪比)较低的情况下,采用QPSK调制方式,可以提高系
统的抗干扰能力。
关键词: QPSK 光纤同轴电缆混合网 上行信道 噪声(Abstract: HFC network in accordance with the characteristics of the uplink channel, the establishment of a channel model an analysis of the various uplink channel noise on the impact of QPSK modulation. The results show that the C/N (transmission channel carrier-to-noise ratio) lower, the use of QPSK modulation, can improve the system of anti-interference ability. Keywords: QPSK hybrid fiber coaxial cable network uplink channel noise)
- 2009-04-12 15:45:03下载
- 积分:1
-
lsse-material
lmmse file lest mean square algoritham materal
- 2012-04-05 19:04:02下载
- 积分:1
-
Desktop
模糊 , PID在储能充电放电中的应用。(Application of fuzzy PID in energy storage charge and discharge)
- 2019-05-29 19:17:38下载
- 积分:1
-
3
说明: 第三章 程序流程控制
主要内容1、if…else…选择语句。
2、条件运算符。
3、SWITCH开关分支语句。
4、逻辑运算符。
5、循环语句。
6、自增自减运算。
7、break、continue、goto语句
8、运算符的优先级、结合性。(Chapter III of the main contents of the control procedures for flow 1, if ... else ... select statement. 2, conditional operator. 3, SWITCH branch switch statements. 4, the logical operator. 5, loop. 6, since by reducing computing since. 7, break, continue, goto statement 8, the priority of operator, combined with nature.)
- 2007-10-15 17:25:41下载
- 积分:1
-
Digital-GMSK-modulation-to-achieve
说明: GMSK调制的数字化实现,用matlab实现(Digital GMSK modulation to achieve, achieve with matlab)
- 2011-03-30 13:09:45下载
- 积分:1
-
harris
harris角点检测,并且可以有效的删除一部分密度较大的点(harris conner detection)
- 2012-05-15 15:34:43下载
- 积分:1
-
C16
array stack 学习代码,帮助大家学习(array stack study code)
- 2014-09-24 14:35:07下载
- 积分:1
-
kurt_FastICA
基于峭度的盲源分离,采用FastICA技术,适合初学者(BSS based on kurtosis by FastICA)
- 2014-01-03 14:34:41下载
- 积分:1
-
23825738sypj
说明: 时域同步平均算法,可以同来进行信号降噪,梳形降噪效果很好(The time-domain synchronous average algorithm can reduce the signal noise at the same time, and the comb shaped noise reduction effect is very good)
- 2020-12-12 16:09:15下载
- 积分:1
-
interlace_deinterlace
实现了通信中交织和解交织过程,参数可自定义输入(Realize the communication intertwined intertwined reconciliation process, input parameters can be customized)
- 2021-03-21 15:29:17下载
- 积分:1