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In this contribution, we derive the spread function and power spectrum of the so-called “relay channel” along which electromagnetic waves propagate from a source station to a destination station via multiple amplify-and-forward (AF) relay stations. These results show analytically that the propagation over such a relay channel can be influenced by the(More)
In this contribution, the measurements of intra-body radio propagation channel are conducted at carrier frequencies 433 MHz, 900MHz and 2.4GHz with bandwidth of 2 MHz for different persons. The objective is to find unique propagation characteristics which can be used as fingerprints for personal authentication. The experiment results obtained demonstrate(More)