Abstract
In our previous research, to achieve unequal error protection (UEP), we proposed a scheme which encodes the data by randomly switching between several codes which use different signal constellations and showed the effectiveness in AWGN channels. In this paper, we propose our UEP system using MMSE-FDE (frequency- domain equalization based on the minimum mean square error criterion) for fast and selective fading by using the fact that importance levels are changed every few symbols, i.e., every block, in the proposed system. We confirmed the improvement in BER performance and the effectiveness of adaptive equalization for the proposed system in fading channels. As a result, we showed that a UEP system is realizable in mobile telecommunications environments.
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