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Performance of a Correlation-Based Detector for Packet Wireless Networks

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4 Author(s)
Sheehan Khan ; Univ. of Alberta, Edmonton ; Nagaraj, S. ; Schlegel, C. ; Burnashev, M.

The problem of preamble detection in the additive white Gaussian noise channel is considered. Performance bounds on locating the preamble sequence for uncoordinated packet-based communication systems are derived. The preamble sequence is differentially encoded and spread. At the receiver, a differential correlation-based threshold detector is employed to locate the preamble boundaries. Simulation results are presented to validate the analytical expressions. It is found that by taking 2 sample per chip the detector can be used to provide chip synchronization, with little deviations in system performance from the chip synchronous case.

Published in:

Electrical and Computer Engineering, 2007. CCECE 2007. Canadian Conference on

Date of Conference:

22-26 April 2007