Embedding a n-tree into a b-dimensional space

Given a (directed) n-tree $T=(N,E,r)$ rooted in $rin N$, I want to represent each node $nin N$ at most as a $m$-dimensional vector $v_nin mathbb{R}^m$ (From the current Yuri’s reply, m cannot be $b$). In particular, given $h$ the height of the tree (that is, the maximum path length starting from $r$), I want to guarantee that $forall a,bin N. |v_a-b_b|_2leq h$ if and only if there exists a directed path $pi(a,b)$ or $pi(b,a)$ in $T$.

Example, given the following tree rooted in $1$, $({1,2,3,4},;{(1,2), (1,3),(3,4)},1)$, I would instantiate the distance constraints as follows:

• $forall (a,b)in Ecup {(b,a)|(a,b)in E}. |v_a-v_b|_2leq 1$
• $|v_1-v_4|_2leq 2$ by transitive closure
• $forall (a,b)in V^2backslash (Ecup {(b,a)|(a,b)in E}. 3leq |v_a-v_b|_2leq 4$

I was thinking to reduce this problem into the Distance Geometry Problem, and to use the former distances to feed known solvers like DGSOL or MD-Jeep: while the first commits non-negligible errors, MD-Jeep returns some errors during the computation of the torsion angle, and therefore cannot provide a viable solution. Is this a problem of the Distance Geometry Problem itself, or are there other implementations that would not suffer from the same problem? Alternatively, is it possible to express this problem using mathematical programming, i.e. using one of the already existing libraries?