An efficient CPU‐GPU hybrid parallel implementation for DVB‐RCS2 receiver

Abstract

SummaryThe second‐generation digital video broadcasting return channel via satellite (DVB‐RCS2) is a promising real‐time wireless protocol that has been widely used in many applications, such as video conferences, video feeds, and video multicasting. However, the receiver end of DVB‐RCS2 is time consuming and should be accelerated by high‐performance processing systems. Today, graphic processing units (GPUs) have been applied in communication systems due to high parallel capability and processing throughput. In this study, we design a novel pipeline of the receiver on the CPU‐GPU platform. Moreover, we propose a CPU‐GPU hybrid strategy to fully utilize resources and reduce communication latency. Compared with the parallel turbo decoder proposed in other work on the same platform, our parallel implementation achieves higher throughput. For the entire DVB‐RCS2 receiver, compared with the non‐pipelined serial and non‐pipelined parallel algorithms, our proposed pipeline obtains 20 times and 6 times speedup, respectively. In addition, the latency of our implementation is lower than that of non‐pipelined CPU‐GPU implementation, which is equal to 1.06 ms.