A study on adaptive modulation method for transmit power allocated V-BLAST7 <Abstract> In this study, adaptive modulation method is applied to the transmit power allocated V-BLAST. In the proposed system, modulation method and power allocation are given as control parameter under the environments of constant total transmit power and constant throughput. By applying modulation method as a control parameter the variation range of BER is expanded as a result, the proposed system can achieve lower BER than the conventional method. Moreover it is possible to set the selection that certain antennas are not used. In this case, BER performance is improved .compared with use of all antennas. By carrying out, numerical simulation, it is confirmed that the proposed system achieves lower BER than the conventional method. |