MULTIPLE STREAMS USING PARTIAL STBC WITH SDM WITHIN A WIRELESS LOCAL AREA NETWORK
A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers, the method includes the steps of receiving M data signals from M receive antennas, applying the M data signals to a space/time decoder to produce M decoded streams and reconstructing original data transmitted via N transmit antennas from the M decoded streams. At least P transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
1 - 24 . (canceled)
25 . A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers, the method comprising:
receiving M data signals from M receive antennas;
applying the M data signals to a space block decoder to produce M decoded streams; and
reconstructing original data transmitted via N transmit antennas from the M decoded streams;
wherein at least P transmitting antennas of the N transmitting antennas transmit space block-coded signals and (N-P) transmitting antennas of the N transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
26 . The method of claim 25 , wherein the reconstructing of original data comprises determining a number of transmit streams and configurations of those transmit streams through analysis of the M decoded streams.
27 . The method of claim 25 , wherein P comprises two and the receiving of M data signals comprises receiving two space block-coded signals.
28 . The method of claim 27 , wherein N comprises three and the receiving of M data signals comprises receiving a repetition code signal.
29 . A method according to claim 25 , wherein the reconstructing of original data comprises zero-forcing terms equivalent to relationships between signals sent from the N transmitting antennas to the M receiving antennas to cancel interference.
30 . A method according to claim 29 , wherein the relationships comprise:
[
r
1
r
2
]
=
[
H
1
G
1
H
2
G
2
]
[
c
1
c
2
]
+
[
n
1
n
2
]
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
1
)
]
,
c
2
=
[
c
2
(
t
0
)
]
,
r
1
=
[
r
1
(
t
1
)
r
1
*
(
t
2
)
]
,
r
2
=
[
r
2
(
t
1
)
r
2
*
(
t
2
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
i
g
i
*
]
,
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent from three transmit antennas to two receive antennas.
31 . A method according to claim 29 , wherein the relationships comprise:
[
r
1
r
2
]
4
×
1
=
[
H
1
G
1
H
2
G
2
]
4
×
4
[
c
1
c
2
]
4
×
1
+
[
n
1
n
2
]
4
×
1
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
0
)
]
,
c
2
=
[
c
3
(
t
0
)
c
4
(
t
0
)
]
,
r
1
=
[
r
1
(
t
0
)
r
1
*
(
t
1
)
]
,
r
2
=
[
r
2
(
t
0
)
r
2
*
(
t
1
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
i
0
0
g
i
*
]
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent three transmit antennas to two receive antennas.
32 . A method according to claim 29 , wherein the relationships comprise:
[
r
1
r
2
r
3
]
6
×
1
=
[
H
1
G
1
H
2
G
2
H
3
G
3
]
6
×
6
[
c
1
c
2
c
3
]
6
×
1
+
[
n
1
n
2
n
3
]
6
×
1
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
0
)
]
,
c
2
=
[
c
3
(
t
0
)
c
4
(
t
0
)
]
,
c
3
=
[
c
5
(
t
0
)
c
6
(
t
0
)
]
,
r
1
=
[
r
1
(
t
0
)
r
1
*
(
t
1
)
]
,
r
2
=
[
r
2
(
t
0
)
r
2
*
(
t
1
)
]
,
r
3
=
[
r
3
(
t
0
)
r
3
*
(
t
1
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
1
i
0
g
2
i
0
0
g
1
i
*
0
g
2
i
*
]
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent from four transmit antennas to three receive antennas.
33 . A receiver for communicating data from N transmitting antennas to M receiving antennas, where M and N are integers, comprising:
a space block decoder, configured to produce M decoded streams based on M data signals received via M receive antennas; and
symbol demapping modules, configured to reconstruct original data transmitted via N transmit antennas from the M decoded streams;
wherein at least P transmitting antennas of the N transmitting antennas transmit space block-coded signals and (N-P) transmitting antennas of the N transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
34 . The receiver of claim 33 , wherein the space block decoder is configured to determine a number of transmit streams and configurations of those transmit streams through analysis of the M decoded streams.
35 . The receiver of claim 33 , wherein P comprises two and the space block decoder is configured to receive two space block-coded signals.
36 . The receiver of claim 35 , wherein N comprises three and the space block decoder is configured to receive a repetition code signal.
37 . A receiver according to claim 33 , wherein the space block decoder is configured to zero-force terms equivalent to relationships between signals sent from the N transmitting antennas to the M receiving antennas to cancel interference.
38 . A receiver according to claim 37 , wherein the relationships comprise:
[
r
1
r
2
]
=
[
H
1
G
1
H
2
G
2
]
[
c
1
c
2
]
+
[
n
1
n
2
]
where
,
c
1
=
[
c
1
(
t
0
)
c
1
(
t
1
)
]
,
c
2
=
[
c
2
(
t
0
)
]
,
r
1
=
[
r
1
(
t
1
)
r
1
*
(
t
2
)
]
,
r
2
=
[
r
2
(
t
1
)
r
2
*
(
t
2
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
i
g
i
*
]
,
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent from three transmit antennas to two receive antennas.
39 . A receiver according to claim 37 , wherein the relationships comprise:
[
r
1
r
2
]
4
×
1
=
[
H
1
G
1
H
2
G
2
]
4
×
4
[
c
1
c
2
]
4
×
1
+
[
n
1
n
2
]
4
×
1
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
0
)
]
,
c
2
=
[
c
3
(
t
0
)
c
4
(
t
0
)
]
,
r
1
=
[
r
1
(
t
0
)
r
1
*
(
t
1
)
]
,
r
2
=
[
r
2
(
t
0
)
r
2
*
(
t
1
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
i
0
0
g
i
*
]
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent three transmit antennas to two receive antennas.
40 . A receiver according to claim 37 , wherein the relationships comprise:
[
r
1
r
2
r
3
]
6
×
1
=
[
H
1
G
1
H
2
G
2
H
3
G
3
]
6
×
6
[
c
1
c
2
c
3
]
6
×
1
+
[
n
1
n
2
n
3
]
6
×
1
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
0
)
]
,
c
2
=
[
c
3
(
t
0
)
c
4
(
t
0
)
]
,
c
3
=
[
c
5
(
t
0
)
c
6
(
t
0
)
]
,
r
1
=
[
r
1
(
t
0
)
r
1
*
(
t
1
)
]
,
r
2
=
[
r
2
(
t
0
)
r
2
*
(
t
1
)
]
,
r
3
=
[
r
3
(
t
0
)
r
3
*
(
t
1
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
1
i
0
g
2
i
0
0
g
1
i
*
0
g
2
i
*
]
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent from four transmit antennas to three receive antennas.
41 . A receiver for communicating data from N transmitting antennas to M receiving antennas, where M and N are integers, comprising:
M receive antennas, for receiving M data signals;
a space block decoder, configured to produce M decoded streams based on the M data signals; and
symbol demapping modules, configured to reconstruct original data transmitted via N transmit antennas from the M decoded streams;
wherein at least P transmitting antennas of the N transmitting antennas transmit space block-coded signals and (N-P) transmitting antennas of the N transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.
42 . The receiver of claim 41 , wherein the space block decoder is configured to determine a number of transmit streams and configurations of those transmit streams through analysis of the M decoded streams.
43 . The receiver of claim 41 , wherein P comprises two and the space block decoder is configured to receive two space block-coded signals.
44 . The receiver of claim 43 , wherein N comprises three and the space block decoder is configured to receive a repetition code signal.
45 . A receiver according to claim 41 , wherein the space block decoder is configured to zero-force terms equivalent to relationships between signals sent from the N transmitting antennas to the M receiving antennas to cancel interference.
46 . A receiver according to claim 45 , wherein the relationships comprise:
[
r
1
r
2
]
=
[
H
1
G
1
H
2
G
2
]
[
c
1
c
2
]
+
[
n
1
n
2
]
where
,
c
1
=
[
c
1
(
t
0
)
c
1
(
t
1
)
]
,
c
2
=
[
c
2
(
t
0
)
]
,
r
1
=
[
r
1
(
t
1
)
r
1
*
(
t
2
)
]
,
r
2
=
[
r
2
(
t
1
)
r
2
*
(
t
2
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
i
g
i
*
]
,
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent from three transmit antennas to two receive antennas.
47 . A receiver according to claim 45 , wherein the relationships comprise:
[
r
1
r
2
]
4
×
1
=
[
H
1
G
1
H
2
G
2
]
4
×
4
[
c
1
c
2
]
4
×
1
+
[
n
1
n
2
]
4
×
1
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
0
)
]
,
c
2
=
[
c
3
(
t
0
)
c
4
(
t
0
)
]
,
r
1
=
[
r
1
(
t
0
)
r
1
*
(
t
1
)
]
,
r
2
=
[
r
2
(
t
0
)
r
2
*
(
t
1
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
i
0
0
g
i
*
]
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent three transmit antennas to two receive antennas.
48 . A receiver according to claim 45 , wherein the relationships comprise:
[
r
1
r
2
r
3
]
6
×
1
=
[
H
1
G
1
H
2
G
2
H
3
G
3
]
6
×
6
[
c
1
c
2
c
3
]
6
×
1
+
[
n
1
n
2
n
3
]
6
×
1
where
,
c
1
=
[
c
1
(
t
0
)
c
2
(
t
0
)
]
,
c
2
=
[
c
3
(
t
0
)
c
4
(
t
0
)
]
,
c
3
=
[
c
5
(
t
0
)
c
6
(
t
0
)
]
,
r
1
=
[
r
1
(
t
0
)
r
1
*
(
t
1
)
]
,
r
2
=
[
r
2
(
t
0
)
r
2
*
(
t
1
)
]
,
r
3
=
[
r
3
(
t
0
)
r
3
*
(
t
1
)
]
,
H
i
=
[
h
1
i
h
2
i
h
2
i
*
-
h
1
i
*
]
,
G
i
=
[
g
1
i
0
g
2
i
0
0
g
1
i
*
0
g
2
i
*
]
where r i (t) and c i (t) are the received and transmitted signals, respectively, n i represent noise terms and G i and H i represent relationships between signals sent from four transmit antennas to three receive antennas.