Abstract

This paper presents an implementation of turbo decoder in LTE downlink system on a multi-core processor platform. Turbo code, also called Parallel Concatenated Convolutional Code (PCCC) is used for LTE system [1] for its good error correcting ability and anti-interference ability [2]. As the wireless communication is developing constantly, it turns to be more difficult for ASIC baseband processing solutions to adapt the rapidly changing communication standards. The multi-core processor platform, a mesh array of SIMD cores, is well suited for wireless communication applications due to its programmability and re-configurability. We realize a turbo decoder with the throughput of 46Mbps by deeply excavating the task-level pipelining and data-level parallelism on multi-core processor platform.

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