Placement Delivery Array Based on Concatenating Construction
Xi Zhong, Minquan Cheng, Jing Jiang · IEEE Communications Letters · 2020
In the coded caching problem apart from transmission rate, reducing the number of packets F ia also meaningful for practical implementation for coded caching scheme. Yan et al. reformulate the centralized coded caching schemes as designing a corresponding placement delivery array (PDA). In this letter, we propose two concatenating constructions by concatenating some known PDAs to obtain new PDAs therefore new code caching schemes with low sub-packetization level. Further, the comparison and analysis of parameters between our new schemes and known schemes is also performed.