Acquiring Multiple Spread
Spectrum Signals in a Multiantenna Ad Hoc Network
December 2003
Robert M. Taylor, Jr., The MITRE Corporation
ABSTRACT
In this study we investigate acquisition (code offset and channel state estimation)
of multiple direct sequence spread spectrum DSSS signals in a multi-antenna ad
hoc network. We derive the form of the optimal acquisition algorithm and show
that it is NP-complete. We then derive a tractable suboptimal approach where we
use a successive multistage cancellation approach in estimating the initial code
offsets and channel matrix. Finally, we show probability of error curves for the
optimal and suboptimal delay estimators.
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acquisition, spread spectrum, multiantenna, ad hoc network
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