Design of multi-rate linear dispersion codes based on extended matrix method

The performance may be reduced by the path between transmission and reception in a bad state in wireless communication systems using space-time codes(STCs).An STC called multi-rate linear dispersion codes(LDC)is proposed and analyzed,and its BER performance is a good trade-off between classical LDC and LDC-TAS.A design of multi-rate LDC based on extended matrix method is given.Further,an algorithm of adaptive transmit antenna selection(A-TAS)with multi-rate LDC is proposed,and it has better performance than classical LDC-A-TAS.