P. Moqvist, Serially Concatenated Systems: An Iterative Decoding Approach with Application to Continuous Phase Modulation, Licentiate Thesis, Chalmers University of Technology, Gteborg, Sweden, December 1999.  Home/Search   Document Details and Download   Summary   Related Articles

....in the iterative decoder. Figure 4.3. Encoder structure for serial concatenation. Finally, serial concatenation of block codes (SCBC) and convolutional codes (SCCC) with iterative APP decoding and interleaving have been shown to offer significant advantages over turbo codes Figure 4. 3, 13] [55]. 4.2 Iterative Decoding of Concatenated Codes For a PCBC an APP algorithm is used in each of the constituent decoders. We define the log likelihood ratio (LLR) of the a priori probabilities as ln . Lu = 4.1) Thus, the first decoder sets the LLR of the a priori probabilities to zero, i.e. ....

....the stopping criteria when used as retransmission criterion can be further investigated. The inner code in the serially concatenated scheme could be replaced by a recursive inner code or recursive modulation, since both these approaches has been shown to have a significant interleaver gain [13] [55]. Also, choosing a more effective modulation method would be expected to improve performance. When serially concatenated codes are used, any retransmission can be seen as a parallel concatenation of serially concatenated codes. The question is then how to schedule the process. This has not been ....

P. Moqvist, Serially Concatenated Systems: An Iterative Decoding Approach with Application to Continuous Phase Modulation, Licentiate Thesis, Chalmers University of Technology, Gteborg, Sweden, December 1999.

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC