Tan, LianshengWang, Xiangjun2015-12-101089-7798http://hdl.handle.net/1885/60234This letter proposes a novel method to estimate IP traffic matrix (TM). By using the generalized matrix inverse, we are able to overcome the challenge of ill-posed nature of the problem. We describe the inference of TM into an optimization problem and then solve this problem by calculating the {1}- INVERSE of the routing matrix. Numerical results are provided to demonstrate the accuracy of this method.Keywords: Inverse problems; Matrix algebra; Optimization; Telecommunication links; Telecommunication traffic; Traffic engineering; Traffic matrix estimation; Internet protocols Link count; Traffic engineering; Traffic matrix estimation; {1}- inverse200710.1109/LCOMM.2007.0710662015-12-10