Sliding window symbol-pair constrained codes for energy harvesting

The binary symbol-pair constrained codes that can enable simultaneous transfer of information and energy is the topic of interest in this paper. The construction and properties of such binary symbol-pair code using the sliding window constraint are discussed in this paper. The sliding window constraint ensures the presence of at least t weighted symbols within any prescribed window of l consecutive symbol-pairs. The information capacity of (l,t)-constrained sequences has been obtained and analyzed. This paper provides the block code construction of (l,t) symbol-pair constrained codes of length n without using a n-step finite-state machine. The information capacity obtained in this paper is better than the information capacity of (l,t)-constrained codes in Schouhamer Immink and Kui (IEEE Commun Lett 24(9):1890–1893, 2020) [16].