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Table 2 QPSK alphabet

From: Successive interference cancelation and MAP decoding for mobile MIMO OFDM systems and their convergence behavior

 

1

2

3

4

(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