CP-BZD Repair Codes Design for Distributed Edge Computing

In edge computing applications, data is distributed across several nodes. Failed nodes mean losing part of the data which may hamper edge computing. Node repair is needed for frequent nodes failure in edge computing systems. Codes with both the combination property (CP) and Binary Zigzag Decodable (BZD) are referred to as CP-BZD codes. In this paper, without adding extra checking bits, new coding constructions of CP-BZD codes are proposed to repair the failed node in distributed storage systems. All constructed codes can be decoded by the zigzag-decoding algorithm. Numerical analysis shows that compared with the original CP-BZD codes, our proposed schemes obtain better repair efficiency.