1.The result indicates that it will make the loop warp receive less frictional force to settle the basic warp between two loop warps and insert the warp through the dent while the ratio of basic warp to loop warp is 1∶2 in the towel;
2.Many existing CO DSL modems may only support a relatively narrow receive frequency range, which will increase the difficulty of estimating the much wider bandwidth far-end loop noise.
