PERFORMANCE OF ROBUST METRICS WITH CONVOLUTIONAL CODING AND DIVERSITY IN FHSS SYSTEMS UNDER PARTIAL-BAND NOISE JAMMING

Abstract

Performance of robust metrics (metrics that can be computed from the outputs of the matched filters only) with convolutional coding and diversity under worst case partial-band noise jamming is analyzed. Both binary and dual-k convolutional codes employing these metrics with diversity are compared via Union-Chernoff bounds. The performances of metrics considered in the literature that assume perfect side-information are given for comparison purposes. We find that there exists very good robust metrics that provide performance comparable to metrics using perfect side-information. Among the robust metrics considered in this paper, the self-normalized metric offers the best performance and achieves performance practically identical to that of the square-law-combining metric with perfect side-information for M = 8.