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Abstract --In mobile radio communication systems using spread spectrum technology, an accurate estimate of the signal
 

Summary: Abstract -- In mobile radio communication systems using
spread spectrum technology, an accurate estimate of the signal
propagation delay is needed in order to recover the transmitted da-
ta. This process is usually done using a pseudo noise (PN) code ac-
quisition algorithm to search for the correct propagation delay
within a window of possible delays. In this paper, we propose a new
approach to solving the PN code acquisition problem using ad-
vanced Boolean Satisfiability (SAT) techniques. SAT solvers use in-
telligent search algorithms that can traverse the search space and
efficiently prune parts that contain no solutions. These solvers have
recently been used to solve many challenging problems in Engi-
neering and Computer Science. In this paper, we show how to for-
mulate the PN code acquisition problem as a SAT instance and
evaluate the use of advanced SAT techniques in solving the prob-
lem. Our approach is verified by simulation and presented results
indicate that the proposed system achieves a detection probability
for the correct delay of almost 100% for all practical cases.
I. INTRODUCTION
Direct sequence spread spectrum (DS-SS) has recently been
proposed for use in third generation mobile communications

  

Source: Aloul, Fadi - Department of Computer Engineering, American University of Sharjah

 

Collections: Engineering