A novel solution to power problems in implanted biosensor networks

Implanted biosensor networks are a special class of wireless sensor networks used in-vivo for various medical applications. One of major challenges of continuous implanted sensing is the power problems due to implanted sensors´ communication cost. A deduction in theory has been made to prove the relationship between energy cost per bit and the data rate of one kind of signal. So choosing an appropriate kind of communication signals is one of the best ways to solve power problems in implanted biosensor networks. The great potential of impulse-based UWB signal, in particular low power consumption, low power spectral density, high data rate, and high immunity against interference makes itself an attractive option. This kind of communication system can probably break lots of limits in human body because of its simple architecture and carrier-free characteristic. Some successive works, which will unavoidably be met when impulse-based UWB signals are adopted in implanted biosensor network, are also discussed