The goal of this contribution is to show which practical routing approach, for wireless mesh network (WMN) backhaul, is the best for systems presenting a constraint on the total power to be emitted be network nodes by modeling rounting as a power allocation problem. We consider at first multiple-input multiple-output (MIMO) point-to-point capacity-achieving codes, and nodes cooperation. Furthermore we take care of a WMN backhaul with a single source node, a single destination node, and N-l intermediate nodes placed equidis-tantly on a line between them. Additionally we consider also an interference cancellation able to enhance throughput and we compare the single-hop paradigm with multi-hop one.