Interference Resistant Adaptive Threshold Acquisition Algorithm for DS-UWB Systems

Author

Chen, Jun ; Zhou, Zheng

Author_Institution

Wireless Network Lab, Beijing Univ. of Posts & Telecommun.

Volume

5

fYear

2006

fDate

7-10 May 2006

Firstpage

2368

Lastpage

2372

Abstract

Ultra-wide band (UWB) radio transmits data using nanosecond level impulses, typically work in dense multi-path environment. Acquisition performance decreases rapidly due to serious inter-symbol interference (ISI) caused by those complex channel with relatively large delay spread. An interference resistant adaptive threshold acquisition algorithm (IR-ATAA) for DS-UWB systems is described and analyzed. The decision threshold changes automatically adapting to the signal to noise ratio (SNR) at time of comparison. Due to this stratagem, the probability of acquisition P_ACQ improved a lot. The simulation results also indicate the superiority of IR-ATAA over the fixed threshold acquisition algorithm

Keywords

interference suppression; intersymbol interference; multipath channels; spread spectrum communication; ultra wideband communication; DS-UWB systems; ISI; SNR; delay spread; dense multi-path environment; direct sequence ultra-wide band radio; fixed threshold acquisition algorithm; inter-symbol interference; interference resistant adaptive threshold acquisition algorithm; nanosecond level impulses; probability of acquisition; signal to noise ratio; Adaptive signal detection; Adaptive systems; Correlators; Delay; Hardware; Intersymbol interference; Signal detection; Signal processing; Signal to noise ratio; Wireless networks; Acquisition; Adaptive-Threshold; DS; UWB;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd

Conference_Location

Melbourne, Vic.

ISSN

1550-2252

Print_ISBN

0-7803-9391-0

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2006.1683281

Filename

1683281