4.6 Continuing Mapping Theorem For user k,the signal by multiplying MMSE decoder matrix is yMe=h(HH”+8Lw)厂y -空a+j2n The sienal part:h. The inerfarnce part[2hA+丁交g The nise prt(2②Au+,” 77 4.6 Continuing Mapping Theorem For user k, the signal by multiplying MMSE decoder matrix is   1 2 1 2 1 1 MMSE H H k k N K K H H k i i N i i i i y s                          h HH I y h h h I h n The signal part: 1 2 1 K H H k i i N k k i s           h h h I h  The interference part: 1 2 1 1 K K H H k i i N i i i i i k s             h h h I h   1 2 1 K H H k i i N i           The noise part: h h h I n 