一种应用多维TCM的新型CDMA系统

The Ranges of the Elliptic Random Walks on Graphs

通过格码调制（ＴＣＭ）与ＣＤＭＡ技术的结合，给出了一种新型ＣＤＭＡ系统，并在随机多址模型的基础上，假定多址干扰为高斯白噪声，对系统性能进行了分析．分析结果表明：这种系统的性能相对于未编码的系统有相当大的提高，并且性能的提高随格码信号集的扩大和编码约束长度的提高而增大．

The concept of discret Hausdorff dimension on general graphs is introduced.It is proved that the discret Hausdorff dimension of the range of the elliptic random walk equals to its random walk dimension on a class of “regular graphs”.The key of the proof is to give an estimation of Green function, for which the close relations between Green function and resistance are used.