We derive here improved upper bounds on the error probability of block codes which are transmitted over fully interleaved Rician fading channels, coherently detected and maximum likelihood decoded. We assume that the fading coefficients during each symbol are statistically independent (due to a perfect channel interleaver), and that perfect estimates of these fading coefficients are provided to...

A code-matched interleaver design for turbo codes in which a particular interleaver is constructed to match the code weight distribution is proposed. The design method is based on the code distance spectrum. The low weight paths in the code trellis which give large contributions to the error probability in the signal-to-noise ratio region of interest for practical communication systems are elim...

There has been a trend to support ‘computing on move’ or mobile computing, where a user is free to roam and he or she still expects an uninterrupted access to the Internet. To support mobile computing over the Internet, two possible approaches can be considered. One is to use mobile version of IP (Internet Protocol), which could support typical Internet applications. The second approach is to u...

In this paper, the combination of equalization and turbo decoding is studied. In the iterative decoding of a product code in block turbo coding system, the equalization process is performed within the iteration loop. The present study aims to investigate the decision feedback equalizer (DFE) incorporated in the iterative decoding. Simulation results show that the more severe the channel interfe...

Using formal speciications to represent software components facilitates the determination of reusability because they more precisely characterize the functionality of the software, and the well-deened syntax makes processing amenable to automation. We present speciica-tion matching as a method for classiication, retrieval, and modiication of reusable components. A software component is speciied...

The discovery of Turbo Codes in 1996 by Berrou et. al. proved to be a huge boost for the research of channel coding. The Turbo Principle behind turbo codes was found to be applicable in other areas. One of these areas is Multiuser Detection. In this thesis, Turbo Multiuser Detection is investigated in order to answer two main questions. The questions concern the performance gain that is obtaine...