Institute of Electrical & Electronic Engineers
Recently, Delay-Tolerant Space-Time Codes (DTSTCs) have been designed for cooperative communications. They are optimal in synchronous transmission and preserve their full-diversity order for arbitrary delays in asynchronous case. In this paper, the authors investigate these DT-STCs in femtocell networks where Femtocell Access Points can assist Macrocell Base Stations to transmit data information to users. The delays can be randomly introduced by the MBSs-FAPs backhaul links. They consider concatenated DT-STCs based on previous designs and they address their optimal and sub-optimal decoding schemes. In order to reduce the complexity, they propose a new sub-optimal algorithm based on successive sub-code words decoding.