(3) When the jamming power is decreased, that is, the channel approaches the unjammed channel, the performance of R-GMD and RS-GMD decoding is still better than the performance of "Without EI" or MO-RTT. This implies that the iterative erasure insertion and decoding schemes do not decrease the performance if there are no jamming signals.
In Figure 7, the performances of MO-RTT and RS-GMD decoding are shown over a partial-band jamming and an AWGN channel with various jamming duty ratios [rho] with fixed [E.sub.b]/[N.sub.0] = 5dB and [E.sub.b]/[N.sub.j] = 10 dB.
We assume that fading coefficients are not known to the receiver, except for the system of MO-RTT.
In Figure 8, RS-GMD decoding exhibits better performance than MO-RTT, which is the same result as we found over the AWGN channel.