An Efficient Transmission Scheme Based on Adaptive Demodulation in Wireless Multicast Systems

To raise the transmission rate of wireless multicast system, an efficient transmission scheme based on adaptive demodulation ADS is proposed. Firstly, the working principle how ADS can exploit user's transmission ability better is described. Then, the bit mapping method of ADS is formulated. Finally, to analyze the transmission ability of ADS, the expression of transmission rate is derived. Numerical results show that the transmission rate of ADS is much higher than the existing schemes.