Signals output from two filters included in a filter section 70 and differing in passband are respectively stored in different memories included in a memory section 80, and a positioning process is performed based on the signal stored in the memory. In one example embodiment, a method includes receiving a signal, wherein the signal comprises a first data pattern which was generated at a first bit rate. The metal matrix composite also includes a support element formed from a metal where the metal impregnates through the preform. If supported switches are found missing in the assumed topology, the switch count is increased accordingly, and started over with a new hypothesis.