A novel comb filter based receiver with energy detection for UWB wireless body area networks

Abstract

Ultrawideband transmission systems have a potential of low complexity, low power consumption, and low cost. These properties and low emission levels make it well-suited for wireless body networks. We propose a special spread spectrum transmission technique with a novel comb filter based energy detection receiver. It can cope with the problems of multipath propagation, low SNR and strong narrow band interference at the same time. The performance of the proposed system is discussed for different scenarios.

Investigations on a Comb Filter Approach for IR-UWB Systems

“…As can be seen, higher SNR improvements can be achieved by increasing the number of accumulated impulses, but coming along with a need for a more precise control of the loop gain. Further investigations on the comb filter based energy detector can be found in [6].…”

“…The concept can be applied for both, communication and imaging. More about the concept can be found in [6]. A hardware description on the building blocks necessary for a correlation receiver according to Fig.…”

A Biphase Modulator Circuit for Impulse Radio-UWB Applications

“…The biphase modulator is placed between the transmit pulse generator and the antenna. Apart from the use of the biphase modulator in a correlation system, the circuit can as well be used in a spread-spectrum system for the chipwise spreading and despreading of multi-impulse symbols, as proposed in [6]. The modulator circuit presented in this letter can be used for both types of applications.…”