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The performance of many existing communications systems can be improved simply by replacing the currently used forward error correction (FEC) code with a modern iteratively decodable FEC code. The potential improvements of adding modern FEC are even more pronounced for systems that do not currently employ any FEC. In this paper, we compare the performance of fast frequency hopping with simple diversity...
Co-channel interference and inter-symbol interference (ISI) are common problems encountered by modern wireless communication systems. To mitigate these challenges, diversity antennas with optimum combining can be used in conjunction with the maximum likelihood sequence estimator (MLSE) to achieve the optimum receiver in a time dispersive propagation environment. We derive a simple multi- antenna MLSE...
The use of side information can dramatically improve the performance of fast frequency hopping (FFH) spread spectrum systems. Unfortunately, little paper discussed how to get this information. In this paper, the generation of side information for FFH systems in the presence of partial-band jamming is investigated. We focus on the slowly changing interference and propose an FFH receiver model with...
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