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从移动终端连接到接入网的技术难题
详细信息    查看官网全文
摘要
信道资源十分珍贵,同时信道中的情况也十分恶劣。当我们考虑用户使用移动终端进行通信时,我们并不担心数据包的转发方式,也不关心调制解调是否可靠,我们对话路转接的过程也十分放心。唯独信道多变和复杂的特性使得我们必须采用很大的代价,采取大量的技术手段,才能提升通话的可靠性,使通信高效稳定的进行。每一次发送速率的提升,每一次对频带进一步的利用,都不能不考虑信道中出现的反应以及这种反应对信号的影响,以下我们详细分析了信道特性,简单阐述了信号通过信道的变化以及对信号畸变的解决方法。
Channel resources are very valuable,while the situation in the channel is also very bad.When we consider the use of mobile terminals for mobile communication,we do not worry about the way forward packets,do not care whether the modem is reliable,we transfer the process of dialogue is also very assured.Only channel changeable and complex features make it necessary to use a lot of cost,to take a lot of technical means to improve the reliability of the call,so that the efficient and stable communication.Each time the transmission rate increases,each time the band is further utilized,can not but consider the response in the channel and the impact of this reaction on the signal,the following we detailed analysis of the channel characteristics,a brief description of the signal through the channel changes and Solution to signal distortion.
引文
[1]中兴通讯学院.对话移动互联网.人民邮电出版社.2010(07).
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    [3]T.S.Rappaport,Wireless Communications:Principles and Practice,2nd Ed.Englewood Cliffs,NJ:Prentice Hall,Dec 2001.
    [4]宽带CDMA系统中最大多普勒频移估计方法的研究[J].盛彬,尤肖虎.通信学报.2004(06).
    [5]OFDM通信系统中的多普勒频移估计[D].孟建刚.西安电子科技大学2011.

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