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用python爬虫抓站的一些技巧总结
说明: 用python爬虫抓站的实用技巧,学习python爬虫抓站的实用知识(Practical Skills of Python Crawler Grab Station)
- 2019-03-18 09:26:51下载
- 积分:1
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multiuser
本文针对并行干扰抵消检测器的不足之处,提出了改进的并行干扰抵消检测算法——基于多项式展开的并行干扰抵消多用户检测算法。该算法将多项式展开检测器作为并行干扰抵消检测器第一级的数据估计值,以提高检测可靠性。通过仿真实验,首先验证了多项式展开检测器的性能。然后比较改进算法与传统检测器的性能,验证改进算法的系统性能得到明显改善;并与并行干扰抵消检测器、解相关检测器和MMSE检测器相比较,验
证得到该改进算法的性能也有不同程度的改善。
(this paper discusses the principle and performance of the
conventional detector and the parallel interference cancellation(PIC)detector
separately.Since the conventional detector take MAI only as the background noise without considering the existence of the other users,the existence of MAI has a significant impact on the performance of CDMA systems.Each stage of PIC detector utilizes the data estimates of the initial or previous stage,produces a new set of MAI estimates,and then subtracts out all of the MAI for each user in parallel.Through Monte Carlo simulation in different scenarios,the results illustrate the influence of MAI in conventional CDMA ystems.Theexperimental results show PIC detector can effectively eliminate MAI andimprove the system BER.
)
- 2010-03-02 22:59:56下载
- 积分:1
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Markov_Chains
a book chapter about Markov Chains(Introduction
Most of our study of probability has dealt with independent trials processes. These
processes are the basis of classical probability theory and much of statistics. We
have discussed two of the principal theorems for these processes: the Law of Large
Numbers and the Central Limit Theorem.)
- 2010-02-26 15:29:52下载
- 积分:1
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Cooperation-diversity-DF
协作通信系统中DF协议下的系统仿真,可以实现中断概率的分析。(DF protocol system simulation, collaborative communications system outage probability analysis.)
- 2012-04-22 10:51:59下载
- 积分:1
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vhdl
toturial of vhdl
- 2010-01-10 02:23:52下载
- 积分:1
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interp2
双线性插值图像收缩算法,可以用来对图像进行处理(interpretation)
- 2009-03-26 10:34:56下载
- 积分:1
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iocomp
极品工业仪表控件iocomp的使用说明,很详细,找了好久才找到。。。(iocomp )
- 2010-08-21 20:10:43下载
- 积分:1
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TCPIPVolume1
《TCP/IP详解,卷1:协议》是一本完整而详细的TCP/IP协议指南。描述了属于每一层的各个协议以及它们如何在不同操作系统中运行。作者用Lawrence Berkeley实验室的tcpdump程序来捕获不同操作系统和TCP/IP实现之间传输的不同分组。对tcpdump输出的研究可以帮助理解不同协议如何工作。 本书适合作为计算机专业学生学习网络的教材和教师参考书。也适用于研究网络的技术人员。 (" TCP/IP Detailed, Volume 1: The agreement" is a complete and detailed TCP/IP protocol guidelines. Describe each level belonging to the various agreements and how they run on different operating systems. Author Lawrence Berkeley Laboratory with the tcpdump program to capture the different operating systems and TCP/IP to achieve the different between the sub-transmission. Tcpdump output of research can help understand how different protocols work. This book suitable for students learning computer network reference materials and teachers. Research network also applies to technical staff.)
- 2009-06-08 22:46:12下载
- 积分:1
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English
basic english sentence patterns
- 2019-06-17 16:50:41下载
- 积分:1
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SAP_ABAP_WebDynpro
SAP_ABAP_WebDynpro开发(中文),编程详细介绍(SAP ABAP WebDynpro program)
- 2016-07-29 16:10:40下载
- 积分:1