SQUARE-LAW DEVICE ANALYSIS FOR THE DETECTION AND TIMING ESTIMATION OF A BURST BPSK SIGNAL

Authors
  1. Seed, W.R.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The use of a square-law device for the detection and timing estimation of a burst BPSK signal is analyzed. By evaluating the signal and noise power spectral densities at the device's output, the baseband component is shown to provide a higher signal-to-noise ratio (SNR), and therefore more favorable detection/estimation statistics than the bandpass component. In addition, the SNR of a BPSK-modulated pulse following the envelope detector and subsequent lowpass filter is compared to that obtained from a CW pulse having equal power and duration. From this comparison, an expression is derived that transforms the energy-per-bit-to-noise-power-spectral-density ratio for a burst BPSK-modulated signal to an equivalent energy-per-bit-to-noise-power-spectral-density ratio for a CW pulse. This effective energy-per-bit-to-noise-power-spectral-density ratio can be utilized in parameter estimation and signal detection analyses for BPSK-modulated pulses.
Report Number
DREO-TN-91-6 — Technical Note
Date of publication
15 Jun 1991
Number of Pages
28
DSTKIM No
92-00587
CANDIS No
103483
Format(s):
Hardcopy;Originator's fiche received by DSIS

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