Adaptive Bit and Power Allocation Algorithm for MIMO OFDM Systems
Zheng Xiang · Jisuanji fangzhen · 2007
An adaptive bit and power allocation algorithm for the multiple-input multiple-output (MIMO) OFDM systems was proposed. Based on the perfect channel state information and the singular value decomposition theory, the proposed algorithm allocates bits and power for every sub-carrier of every transmitter. Monte Carlo simulations show that the 4dB relative SNR gain is gained for the 2×2 MIMO OFDM systems without adaptation at the average BER of 10-5.