Continuous phase modulation (CPM) space-time block coding (STBC) method

The invention provides a CPM-STBC method, and aims at providing the method which is simple in coding and lower in reception and computation complexity. In a CPM-STBC coder, NU input symbols to be coded are divided into U paths of symbol streams in parallel by a serial-to-parallel converter; the U paths of symbol streams are input to a CPM modulator (102) to implement CPM on the symbol streams and further to obtain ci(t) (i=1,2 to u); the ci(t) (i=1,2 to u) is input to a sub block level STBC coder based on phase compensation, sub block level encoding is carried out on CPM signals according to classic symbol level STBC coding mapping rules, a phase compensation sub block is inserted between every two adjacent data sub block of each path of signals, and thus, V paths of parallel signals xj(t) (j=1,2 to u) are output; and a DAC carries out digital to analog conversion on the xj(t) (j=1,2 to u), and the V paths of signals are transmitted by V antennas respectively.