Method of allocating resources for transmitting uplink signal in MIMO wireless communication system and apparatus thereof
A method of allocating resources for transmitting a signal in a Multiple-Input Multiple-Output (MIMO) wireless communication system is disclosed. The method includes allocating one or more spatial resources of a plurality of spatial resources corresponding to first Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols to a first transport block, allocating one or more other spatial resources of the plurality of spatial resources corresponding to the first SC-FDMA symbols to a second transport block, and allocating spatial resources corresponding to second SC-FDMA symbols to the first transport block and the second transport block.
1. A method for allocating resources to uplink signal at a terminal in a Multiple-Input Multiple-Output (MIMO) wireless communication system, the method comprising:
writing interleaver input vector sequences having a first bit size into a interleaver matrix row by row;
generating output bit sequences by reading out the interleaver matrix column by column;
generating complexed valued modulation symbols by modulating the output bit sequences by a unit of a second bit size;
allocating at least two layers sequentially to the complexed valued modulation symbols; and
wherein the first bit size is defined Equation 1 shown below
L·log 2 Q <Equation 1>
(where L is the number of layers and Q is a modulation order),
wherein the second bit size is defined log 2 Q.
2. The method according to claim 1 , wherein if the number of modulation symbols is given by H per layer and the number of columns of the interleaver matrix is given by C, the number of rows R of the interleaver matrix is defined Equation 2 shown below,
H
·
L
·
log
2
Q
C
〈
Equation
2
〉
where L is the number of layers and Q is a modulation order.
3. The method according to claim 2 , wherein the number of columns of the interleaver matrix is the number of symbols for transmitting data per subframe (N symb ).
4. The method according to claim 2 , wherein the interleaver matrix is represented by Equation 3 shown below,
[
g
0
g
1
…
g
C
-
1
g
C
g
C
+
1
…
g
2
C
-
1
⋮
⋮
⋱
⋮
g
(
R
′
-
1
)
·
C
g
(
R
′
-
1
)
·
C
+
1
…
g
R
′
·
C
-
1
]
〈
Equation
3
〉
where
R
′
=
R
L
·
log
2
Q
and g k is the interleaver input vector sequence.
5. The method according to claim 4 , wherein the interleaver input vector sequence g k is defined by Equation 4 shown below,
g k =[q k·log 2 Q 1 1 , . . . ,q (k+1)·log 2 Q 1 −1 1 ,q k·log 2 Q 2 2 , . . . ,q (k+1)·log 2 Q 2 −1 2 , . . . ,q k·log 2 Q L L , . . . ,q (k+1)·log 2 Q L −1 L ] T <Equation 4>
where q j denotes an encoded bit.
6. A terminal apparatus of a Multiple-Input Multiple-Output (MIMO) wireless communication system, the terminal apparatus comprising:
a processor configured to write interleaver input vector sequences having a first bit size into a interleaver matrix row by row, to generate output bit sequences by reading out the interleaver matrix column by column, to generate complexed valued modulation symbols by modulating the output bit sequences by a unit of a second bit size, and to allocates at least two layers sequentially to the complexed valued modulation symbols; and
a transmission module configured to transmit the complexed valued modulation symbols by using the at least two layers,
wherein the first bit size is defined Equation 1 shown below, and
L·log 2 Q <Equation 1>
where L is the number of layers and Q is a modulation order,
wherein the second bit size is defined log 2 Q.
7. The terminal apparatus according to claim 6 , wherein if the number of modulation symbols is given by H per layer and the number of columns of the interleaver matrix is given by C, the number of rows R of the interleaver matrix is defined Equation 2 shown below,
H
·
L
·
log
2
Q
C
〈
Equation
2
〉
where L is the number of layers and Q is a modulation order.
8. The terminal apparatus according to claim 7 , wherein the number of columns of the interleaver matrix is the number of symbols for transmitting data per subframe (N symb ).
9. The terminal apparatus according to claim 7 , wherein the interleaver matrix is represented by Equation 3 shown below,
[
g
0
g
1
…
g
C
-
1
g
C
g
C
+
1
…
g
2
C
-
1
⋮
⋮
⋱
⋮
g
(
R
′
-
1
)
·
C
g
(
R
′
-
1
)
·
C
+
1
…
g
R
′
·
C
-
1
]
〈
Equation
3
〉
where
R
′
=
R
L
·
log
2
Q
and g k is the interleaver input vector sequence.
10. The terminal apparatus according to claim 9 , wherein the interleaver input vector sequence g k is defined by Equation 4 shown below,
g k =[q k·log 2 Q 1 1 , . . . ,q (k+1)·log 2 Q 1 −1 1 ,q k·log 2 Q 2 2 , . . . ,q (k+1)·log 2 Q 2 −1 2 , . . . ,q k·log 2 Q L L , . . . ,q (k+1)·log 2 Q L −1 L ] T <Equation 4>
where q j denotes an encoded bit.