% function [Xiter,Z] = ESDPDlb(PP,m,dd,rr)
% Solving Sensor Localization System
%
% Input:
% PP:  2xn matrix representing all point on 2D
% m :  the number of Anchor points; last m columns of PP
% dd:  the upper triangle sparse (and noisy) distance matrix
% rr:  the upper triangle sparse lower-bound-constraint matrix
%
% Output:
% Xiter: computed sensor positions
% Z    : individual traces
%
% Written by Ting Kei Pong, based on the ESDP code developed by
% Zizhuo Wang, Song Zheng, Boyd and Yinyu Ye.