Abstract
This paper presents a high-throughput turbo decoder supporting 188 block sizes for 3GPP LTE-Advanced system. This study investigates the memory contention problem when the turbo decoder has none-power-of-two degree of parallelism of MAP processors. The proposed method aims to reduce unnecessary MAP processors when 2 n MAP processors costs too much for a targeted throughput rate. The turbo decoder achieves a throughput of 516Mb/s for 6144-bit block after 4 iterations with 0.2nJ/bit/iteration energy efficiency using a 90nm CMOS technology. © 2012 IEEE.