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.
Acquiring Multiple Spread Spectrum Signals in a Multiantenna Ad Hoc Network
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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.