Title :
Epoch synchronization of random FH signals in broadband noise
Author :
Chung, Char-Dir ; Polydoros, Andreas
Author_Institution :
LinCom Corp., Los Angeles, CA, USA
fDate :
30 Sep-3 Oct 1990
Abstract :
A scheme for epoch synchronization of random frequency-hopped signals in broadband noise is presented. This scheme operates on the power samples of the real-time autocorrelation function of the received waveform. The scheme takes advantage of the fact that power sampling in the correlation domain suppresses frequency and phase dependence, but preserves timing information, in order to construct a maximum-likelihood epoch estimation algorithm for which the hopping pattern need not be known. The conditional mean and variance of this estimator are derived analytically and a simple parameter is found to be adequate for measuring the estimation performance. Simulation results that confirm the analytical results are reported
Keywords :
correlation theory; frequency agility; noise; synchronisation; broadband noise; epoch synchronization; estimation performance; maximum-likelihood epoch estimation algorithm; mean; power samples; power sampling; random FH signals; random frequency-hopped signals; real-time autocorrelation function; received waveform; simulation; timing information; variance; Analysis of variance; Analytical models; Autocorrelation; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; Performance analysis; Phase estimation; Sampling methods; Timing;
Conference_Titel :
Military Communications Conference, 1990. MILCOM '90, Conference Record, A New Era. 1990 IEEE
Conference_Location :
Monterey, CA
DOI :
10.1109/MILCOM.1990.117526
