계층변조를 이용한 다중 사용자 전송 기술

In this paper, we study a method of effectively applying the hierarchical modulation scheme that is being used as a modulation method of the broadcasting on the modulation scheme of the mobile communication technology. Compared to the conventional method using a mixture of 16QAM scheme and QPSK scheme were studied to increase the amount of data transfer to a method of improving the overall performance by minimizing the signal-to-noise ratio degradation.