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Asking for help  

2007-01-07 00:33:34|  分类: 郁闷自己 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

    有时候自给自足的弄论文,的确很痛苦。好在有网络,不然早就死在实验室了。第一次无法从搜索以及国内的朋友处得到满意的help,只好硬着头皮写信给老外,希望这个教授能平易近人一点,或许还能交上朋友甚至成为我的论文的救命稻草。真的很羡慕涛涛,当初能遇到热心的复印自己的论文并给出详细算法的mit的教授。

 

Dear Pro. Sven Wiethoelter:

I am a graduate student of South China University of Techonology. I major in VoWLAN. Recently, I read one of your articles, titled “Perceptual Quality of Internet Telephony over IEEE 802.11e Supporting Enhanced DCF and Contention Free Bursting”, knowing that you had delivered your  voip traffic model for ns2. Then I download that source codes from TKN’s website. After successfully compiled the codes with ns2, I found that the voip traffic needed two files to perform the simulation which were described in the manual including in the source code packet “qofis_v2.tar.bz2”.

These two files “in.bitt” and “in.vuv” took me some time trying to understand what they were and how to build them. But I still quite understand. From the manual, it just described that these two files were “predefined input data” which were handed to the voip traffic. And as my research subject was VoWLAN, I intend to perform my own mac scheme with voip traffic. So without “in.bit” and “in.vuv”, I couldn’t perform the voip simulation. For I knew little about the subject “voice packet” or “perceptual service quality”, it was hard for me to build these two files and finished my simulation. So I wonder if I could get the sample of these two files from you, I just need them to help for finishing the simulation. Thank you for your kind consideration of this request.

Sincerely: Theodore.l

                                                                                                                       2007.1.7

 

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