Delta-oriented programming (DOP) is a compositional approach to flexibly implement software product lines. A delta-oriented product line is realized by a code base and a product line declaration. The code base consists of delta modules comprising modifications of object-oriented programs. The product line declaration defines how these modifications have to be combined to generate all possible p...

The well-known approach of Bose, Ray-Chaudhuri and Hocquenghem and its generalization by Hartmann and Tzeng are lower bounds on the minimum distance of simple-root cyclic codes. We generalize these two bounds to the case of repeated-root cyclic codes and present a syndrome-based burst error decoding algorithm with guaranteed decoding radius based on an associated folded cyclic code. Furthermore...

We propose an explicit construction of full-diversity space-time block codes, under the constraint of an error correction capability. Furthermore, these codes are constructed in order to be suitable for a serial concatenation with an outer linear forward error correcting (FEC) code. We apply the binary rank criterion, and we use the threaded layering technique and an inner linear FEC code to de...

This paper presents a flexible and high-efficiency decoder for turbo product code using extended Hamming code. The supported component code ranges from (8, 4) to (128, 120) to provide enough flexibility for various communication standards. A novel Chase decoder architecture is developed with high efficiency using a low complexity algorithm. Moreover, a conflict free interleave memory access mod...

Software maintenance is the main driver of total costs in the lifecycle of long-living software systems. Code clones, that is, the replication of code fragments across the system, decrease maintainability: It increases the code size and hinders manual code change, inspection, and analysis. Intensive research has been spent in the last two decades to determine the nature of clones, specifically ...

Radio frequency identification (RFID) systems occupy an increasingly important role in asset-tracking and inventory management systems. Large silicon vendors now produce RFID systems, lowering costs while increasing supply. RFID systems could become inexpensive and offer enough performance to satisfy a wide range of commercial applications, one day connecting consumer products in a dynamic, rea...

Generating software from abstract models is a prime activity in model-driven engineering. Adaptable and extendable code generators are important to address changing technologies as well as user needs. However, they are less established, as variability is often designed as configuration options of monolithic systems. Thus, code generation is often tied to a fixed set of features, hardly reusable...

In this paper, we present EPCBC, a lightweight cipher that has 96-bit key size and 48-bit/96-bit block size. This is suitable for Electronic Product Code (EPC) encryption, which uses low-cost passive RFID-tags and exactly 96 bits as a unique identifier on the item level. EPCBC is based on a generalized PRESENT with block size 48 and 96 bits for the main cipher structure and customized key sched...