Table 1 Spreading permutations for MIMO-CDMA systems with four transit antennas
From: Turbo receiver for MIMO-CDMA systems employing parity bit selected and permutation spreading
Coset | Message | w1( t) | w2( t) | w3( t) | w4( t) |
|---|---|---|---|---|---|
| Â | vectors | Â | Â | Â | Â |
M 1 | 0000 | c1(t) | c3(t) | c5(t) | c7(t) |
| Â | 1111 | Â | Â | Â | Â |
M 2 | 0001 | c8(t) | c1(t) | c4(t) | c5(t) |
| Â | 1110 | Â | Â | Â | Â |
M 3 | 0010 | c2(t) | c4(t) | c3(t) | c8(t) |
| Â | 1101 | Â | Â | Â | Â |
M 4 | 0011 | c5(t) | c2(t) | c6(t) | c3(t) |
| Â | 1100 | Â | Â | Â | Â |
M 5 | 0100 | c6(t) | c7(t) | c1(t) | c4(t) |
| Â | 1011 | Â | Â | Â | Â |
M 6 | 0101 | c3(t) | c6(t) | c8(t) | c1(t) |
| Â | 1010 | Â | Â | Â | Â |
M 7 | 0110 | c7(t) | c8(t) | c2(t) | c6(t) |
| Â | 1001 | Â | Â | Â | Â |
M 8 | 0111 | c4(t) | c5(t) | c7(t) | c2(t) |
| Â | 1000 | Â | Â | Â | Â |