A Comparison of Diversity Combining Techniques for Frequency-Hop Communications with Partial-Band Interference

Several diversity combining techniques are considered for applications to frequency-hop communications with partial-band interference. These diversity combining schemes are based on Viterbi's ratio threshold technique. The frequency-hop system considered has binary orthogonal signaling and noncoherent demodulation. A quiescent noise level is included in the analysis to account for thermal noise in the receiver and other wideband noise sources. The goal of this work is to find diversity combining techniques that perform well in partial-band interference without the need for side information.