Design of dual-mode decoder based on LDPC/turbo code

作者：Wang, Xiumin^*; Li, Jun; Wang, Yi; Yin, Haibing; Li, Tingting; Cao, Weilin

来源：IET Communications, 2017, 11(8): 1325-1329.

DOI：10.1049/iet-com.2016.0570

• decoding
• parity check codes
• turbo codes
• table lookup
• dual-mode decoder design
• LDPC-turbo code
• dual-mode low-density parity-check code
• storage unit design
• TD-LTE standards
• WiMax
• storage unit sharing
• look-up table
• splicing storage units

In this study, the authors propose the dual-mode low-density parity-check (LDPC)/turbo decoder which operates by sharing the computing and the storage units. The decoder supports both Wimax and TD-LTE standards, and can make up for the inadequacy of the design of storage units in current researches. First, in terms of storage units sharing, this study uses the look-up table which uses a third less resource than the existing literature. Second, a storage mode is proposed using splicing storage units, which has the maximum occupancy rate of storage units of 47 and 98% in the LDPC and turbo mode, respectively. Furthermore there are only 5 and 2% differences when compared with the theoretical occupancy rates. Compared with the turbo/LDPC decoder made by Carlo, the design of the storage units in this study is more efficient. The storage consumption of each bit is 34 bits, saving about 13% storage units under the same conditions. As to realise the same functions in the LDPC decoder and turbo decoder, the consumption of the logic elements is 33% less than that in existing literature.

• 出版日期2017-6-1
• 单位中国计量大学