我想问几个单词，CW和i-th是指什么？
今晚在看一篇2G网优的文章中有这么一句话：
For each of the selected sites, a Continuous Wave(CW) transmitter is mounted and detailed path loss measurements are performed. The measured data is then used to determine parameters of the optimized propagation model for a given morphological classification.
这个CW怎么译呢，连续波？？
哎，又不能一下发这么多文字，以补充的方式写：
The network in the suburban area uses frequency plan with the reuse of N=15 on the BCCH layer. The reuse in the urban area network is N=30. Both networks deploy “ad-hoc” frequency plan and therefore, a regular reuse of the BCCH channels is not maintained.
这N是指频率利用指数？
Before analyses, all collected measurements are binned. This is a standard process used in practice and it refers to spatial averaging of the individual RSL measurements over a small geographical area called bin. The binning process tends to eliminate impact of the fast fading. In this study, the binning process is performed in accordance with
(1)（唉，这里表达不出公式）
where is the averaged RSL in i-th bin, RSLj is the RSL of the signal expressed in dBm found in i-th bin,and Ni is the total number of samples in i-th bin.
其中的BIN是什么东西？i-th又是什么来的？
偶的E文真的有点问题，看不懂的说。希望能得到您的指点，在此谢过。
答：
1、这个CW怎么译呢，连续波？
呵呵，在字面上的翻译是对了，准确来说应该是等幅波或者等幅电报通信。
等幅电报通信（continuous wave）简称CW方式。CW所需设备最为简单、占用频带很窄而发射效率较高，在同等条件下通信距离更远。
2、N跟你的理解差不多，是同频复用指数，N越大，同频复用距离越大，则同频干扰越容易控制。但同时，N越大，每组频点越少，所能容纳的用户数也越少。
3、i-th 和bin不知道，bin也是是二进制值，这个望高手解答。