Paper Info
Title
An iterative method for code acquisition using DOA estimation and beamforming
Abstract
This paper introduces a method used for code synchronization in direct sequence spread spectrum (DS/SS) systems when the receiver is equipped with a smart antenna followed by the matched filter (MF). The presented method first estimates the direction-of-arrival (DOA) of the DS-signal, then performs beamforming, and finally makes synchronization decision based on the maximum output of the MF. Because the amount of data needed in DOA estimation depends on the prevailing signal-to-noise ratio (SNR), the proposed method operates iteratively. The method starts by collecting a piece of data for DOA estimation. Due to the inaccurate DOA estimation, the main beam of the radiation pattern may be steered to erroneous direction and code acquisition may be failed. After a fail more data is collected and the accuracy of DOA estimate improves. This process is repeated until DOA and delay estimation succeeds. The results show that it is advantageous to start by collecting only a small amount of data for DOA estimation because the shortest mean acquisition times are achieved in that case
Year
DOI
Venue
2005
10.1109/PIMRC.2005.1651624
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium
Keywords
Field
DocType
adaptive antenna arrays,antenna radiation patterns,array signal processing,delay estimation,direction-of-arrival estimation,iterative methods,matched filters,receivers,spread spectrum communication,synchronisation,DOA estimation,DS-SS,beamforming,code acquisition,code synchronization,delay estimation,direct sequence spread spectrum system,direction-of-arrival,iterative method,matched filter,radiation pattern,receiver,smart antenna,Antenna arrays,array signal processing,pseudonoise coded communication,synchronization
Beamforming,Synchronization,Iterative method,Computer science,Direction of arrival,Real-time computing,Smart antenna,Matched filter,Direct-sequence spread spectrum,Spread spectrum
Conference
Volume
ISBN
Citations 
2
9783800729098
0
PageRank 
References 
Authors
0.34
4
3
Name
Order
Citations
PageRank
Henri Puska191.91
Harri Saarnisaari211724.14
Jari H. Iinatti323041.37