Research Article
High Throughput Turbo Decoder Design for GPP Platform
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417597, author={Suiping Zhang and Rongrong Qian and Tao Peng and Ran Duan and Kuilin Chen}, title={High Throughput Turbo Decoder Design for GPP Platform}, proceedings={First International Workshop on C-RAN}, publisher={IEEE}, proceedings_a={C-RAN}, year={2013}, month={2}, keywords={lte turbo decoder simd multi-thread gpp}, doi={10.1109/ChinaCom.2012.6417597} }- Suiping Zhang
Rongrong Qian
Tao Peng
Ran Duan
Kuilin Chen
Year: 2013
High Throughput Turbo Decoder Design for GPP Platform
C-RAN
IEEE
DOI: 10.1109/ChinaCom.2012.6417597
Abstract
The great development of general-purpose processor technology makes the GPP possess the efficiently massive data processing abilities. In the solution(s) of 3GPP LTE system based on GPP platform, Turbo decoding algorithms play a vital role for high decoding complexity. This paper presents the design and implementation of SIMD technique based parallel turbo decoder suitable for GPP architecture. We improve the throughput through a) adopting fix-point design, b) taking full advantage of SIMD technique, c) using multiple soft-input soft-output decoders that operate in parallel, d) introducing multi-core technique to parallelize workload across cores. With 4 threads, the throughput of our SIMD and multithreading technology based turbo decoder for GPP platform achieves 150 Mbps which can meet the requirement of LTE system.
