HE Zhi-qiang, WANG Xiao-xiang, WU Wei-ling. A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel[J]. Acta Electronica Sinica, 2004, 32(9): 1556-1559.
HE Zhi-qiang, WANG Xiao-xiang, WU Wei-ling. A Novel Algorithm of Power Allocation and Adaptive Modulation for MIMO Systems over Time-Varying Fading Channel[J]. Acta Electronica Sinica, 2004, 32(9): 1556-1559.DOI:
A novel power allocation and adaptive modulation algorithm for MIMO systems over time-varying fading channel is proposed.Using water-filling theory in space domains
the optimal power allocation and adaptive MQAM by singular values of the channel transfer matrix with average transmit power constraint is obtained.The spectral efficiency is analysed.The effect of the channel estimation error and feedback delays on the algorithm is investigated.The theoretic analysis and simulation results show that the novel algorithm is robust and easy to implement
and the spectral efficiency of the algorithm is greater than that of early-proposed algorithm with total power constraint.