which are performed bit swap the scheme a and scheme b are two partially swap schemes locations of swapped bit partition of a u2032 code b u2032 code yi u2032 code y 2 u2032 code wi u2032 code and w 2 u2032 code in two example are different so these two scheme can be respectively applied in first transmission and retransmission it is noted that the bit reversing scheme bit swap scheme bit partially swap scheme and multiplexing scheme described in four preceding embodiments of transmission method if necessary can be applied together for better effect fig1 illustrates a flow chart of fifth embodiment of transmission method in accordance with the present invention in step 941 input data is encoded to generate first coded bits and second coded bits in step 942 the first coded bits and second coded bits are interleaved respectively to generate first interleaved coded bits and second interleaved coded bits in step 943 the first interleaved coded bits and second interleaved coded bits are partially swapped respectively in step 944 the partially swapped first interleaved coded bits and partially swapped first interleaved coded bits are combined based on a predetermined multiplexing pattern to generate processed bits which are then mapped to modulation symbols in a predetermined modulation scheme in step 945 for further transmission fig2 illustrates an example of transmission method applied in the ctc encoder in fig2 the bit sequence outputted from ctc encoder are separated into a code b code yi code y 2 code wi code and w 2 code a code and b code are systematic bits and yi code y 2 code wi code and w 2 code are parity bits a code b code yi code.