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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. [ABSTRACT FROM AUTHOR]