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This paper is concerned with the noncoherent soft detection of serially concatenated continuous phase modulation under strong phase noise (PN). We model the noncoherent detection of continuous phase modulation (CPM) as a special case of detection for channel with memory and propose a trellis-based reduced-complexity soft detection algorithm for CPM. The proposed algorithm is developed based on bidirectional...
In this paper, a reduced-complexity continuous-phase encoder (CPE) in the concatenated coded GMSK system, called linearly approximated CPE (LA-CPE) is presented. We show that the LA-CPE can be completely modeled as a trellis diagram with less state number than traditional CPE. Therefore, the benefit to use LA-CPE in concatenated GMSK systems is simple in design and convenient for performance analysis...
For real-time wireless communications, short forward error-correcting (FEC) codes are indispensable due to the strict delay requirement. In this paper we study the performance of short FEC codes. Reed-Solomon (RS) codes and concatenated zigzag (CZ) codes are chosen as representatives of classical algebraic codes and modern simple iterative decodable codes, respectively. Additionally, we use random...
This letter investigates the performance of short forward error-correcting (FEC) codes. Reed-Solomon (RS) codes and concatenated zigzag codes are chosen as representatives of classical algebraic codes and modern simple iteratively decodable codes, respectively. Additionally, random binary linear codes are used as a baseline reference. Our main results (demonstrated by simulations and ensemble distance...
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