Title :
Performance of a Correlation-Based Detector for Packet Wireless Networks
Author :
Khan, Sheehan ; Nagaraj, Sumeeth ; Schlegel, Christian ; Burnashev, Marat
Author_Institution :
Univ. of Alberta, Edmonton
Abstract :
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.
Keywords :
AWGN; packet radio networks; radio receivers; synchronisation; wireless channels; additive white Gaussian noise channel; chip synchronization; correlation-based detector; differential encoding; packet wireless networks; packet-based communication; preamble sequence; Additive white noise; Binary phase shift keying; Detectors; Frequency estimation; Frequency synchronization; Payloads; Phase estimation; System performance; Timing; Wireless networks;
Conference_Titel :
Electrical and Computer Engineering, 2007. CCECE 2007. Canadian Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-1020-7
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2007.22
