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CLPDI Algorithm in UWB Synchronization

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posted on 04.06.2021, 00:54 by Simone SoderiSimone Soderi, Matti Hämäläinen, Jari Iinatti Iinatti

This paper studies code synchronization in time hopping (TH) ultra wideband (UWB) systems. In TH UWB systems, narrow pulses based on Gaussian pulse are positioned in different locations in consecutive time frames. The location of each frame is defined by a spreading code. The receiver collects the energy of the pulses using the same spreading code. To be able to do that, it has to synchronize itself to the incoming signal. Due to the large bandwidth of the signal, several replicas of the signals arrive into the receiver. Thus, the energy of the signal is spread in time domain causing extra problems to the synchronization procedure. In this paper, earlierly proposed method for direct sequence spread spectrum system is applied for time hopping system. The method is simulated in a multipath environment. The performance measure used is the mean acquisition time. Con- stant false alarm rate criterion is used for the threshold setting rule for comparator. The energies of the multipath components are combined in the acquisition process. Therefore, diversity combining is obtained in the acquisition process, which also leads to performance improvement.

Funding

National Technology Agency of Finland (Tekes), Nokia, Elektrobit and the Finnish Defence Forces.

History

Email Address of Submitting Author

s.soderi@gmail.com

ORCID of Submitting Author

0000-0002-1024-9470

Submitting Author's Institution

IMT School for Advanced Studies

Submitting Author's Country

Italy