From: Successive interference cancelation and MAP decoding for mobile MIMO OFDM systems and their convergence behavior
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(m 0,m 1)
(0,0)
(1,0)
(0,1)
(1,1)
η i
1 + j 1 2 n T
− 1 + j 1 2 n T
1 − j 1 2 n T
− 1 − j 1 2 n T