supported by the National Natural Science Foundation of China (Grant No.61002012);the Project of NSF of Guangdong Province (Grant No.10451063101006074);the Industry-Universities-Research Cooperation Project of Guangdong Province and Ministry of Education of China (Grant No.2007A090302116)
We address the problem of estimating the linearly time-varying (LTV) channel of orthogonal frequency division multiplexing (OFDM)/multiple-input multiple-output (MIMO) systems using superimposed training (ST)....