Robust and low complexity packet detector design for MB-OFDM UWB

Multiband orthogonal frequency division multiplexing (MB-OFDM) ultra wideband (UWB) systems have drawn much attention for its high spectrum efficiency and multiple access capability. However, its large throughput requirement and low power spectral density result in high hardware complexity and high power consumption, which are challenges of designing the packet detector. In this paper, a novel detection method is proposed with very good detection performance in low SNR. Low cost and low power schemes are also introduced in circuit design to save 70% area and 71% power. The proposed packet detector is synthesized with UMC 0.13µm library at 132MHz clock frequency. The hardware cost is 56.9K gates and the power consumption is only 11.7mW.

[1]  Heinrich Meyr,et al.  Frame synchronization of OFDM systems in frequency selective fading channels , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[2]  An-Yeu Wu,et al.  A Systematic Design Approach to the Band-Tracking Packet Detector in OFDM-Based Ultrawideband Systems , 2007, IEEE Transactions on Vehicular Technology.

[3]  O. Edfors,et al.  Time and frequency synchronization for OFDM using PN-sequence preambles , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[4]  Khaled Ben Letaief,et al.  A robust timing and frequency synchronization for OFDM systems , 2003, IEEE Trans. Wirel. Commun..

[5]  M. El-Tanany,et al.  Synchronization of OFDM systems over frequency selective fading channels , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[6]  Donald C. Cox,et al.  Robust frequency and timing synchronization for OFDM , 1997, IEEE Trans. Commun..