Title :
Miller-coded PPM UWB transreceiver for low-rate WBAN networks with non-coherent detection
Author :
Zhao, Chengshi ; Kwak, Kyungsup
Author_Institution :
Wireless Network Lab., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Ultra wide band (UWB) is an appropriate candidate used into the physical layer of the wireless body area networks (WBAN). In this paper, a novel UWB transreceiver structure is presented, where a Miller encoder is adopted in the transmitter side and a non-coherent detection scheme is used in the receiver side. Since the power spectral density (PSD) of the UWB signal plays a major role in the coexistence with conventional radio systems, a mathematical framework evaluating the PSD of the proposed pulse radio signal is presented, and it is proved that the proposed scheme smoothes the spectrum which is useful for the coexistence with other conventional radio systems. The transreceiver structure is discussed in detail with a non-coherent detection receiver. The receiving performance is investigated by the simulations, and it is proved that the system is reasonable and the requirement of the WBAN system can be completely satisfied by analyzing the link budget of the system. Analyses and simulations show that the proposed scheme has a higher power efficiency and it is easy to match the FCC radiation requirement mask compared with the conventional UWB systems; furthermore, the proposed scheme is easy to be realized. The proposed scheme is more suitable for WBAN systems than the conventional pulse-based UWB systems.
Keywords :
body area networks; pulse position modulation; signal detection; spectral analysis; transceivers; ultra wideband communication; FCC radiation requirement mask; Miller encoder; PPM UWB transreceiver; low-rate WBAN network; noncoherent detection; power spectral density; pulse radio signal; wireless body area network; Analytical models; Body sensor networks; Capacitive sensors; Humans; Performance analysis; Physical layer; Pulse modulation; Radio transmitters; Receivers; Ultra wideband communication; Miller encode; Pulse position modulation (PPM); Ultra wide band (UWB); Wireless body area network (WBAN);
Conference_Titel :
Communications and Information Technology, 2009. ISCIT 2009. 9th International Symposium on
Conference_Location :
Icheon
Print_ISBN :
978-1-4244-4521-9
Electronic_ISBN :
978-1-4244-4522-6
DOI :
10.1109/ISCIT.2009.5340980