October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 1

doc.: IEEE 802.11-04/1212r0

Submission

Performance of Circulation Transmission (Sub_BC) in 20MHz and 40MHz

MIMO Systems

Jeng-Hong Chen (jhchen2@winbond.com)

Pansop Kim (pkim@winbond.com)

Winbond Wireless Design Center

Torrance, CA, USA

October 2004

(Other documents: IEEE 04/934r2, 04/1026r0, 04/1105/r0, 04/1163r1)

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 2

doc.: IEEE 802.11-04/1212r0

Submission

Generalized Sub-Carrier Based Circulation (Sub_BC)

9N s,subcarrier data 108 with systems MIMO 40MHzFor

3N s,subcarrier data 48with systems MIMO 20MHzFor

System MIMO (M)N afor N

MN

.indexcarrier -sub theis where

,Nmod )]N mod ()N/(floor[)(Pattern

row

row

OFDMOFDM

Pattern

Patternrowrow

s

sss

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 3

doc.: IEEE 802.11-04/1212r0

Submission

Summary I: Alamouti or SMX v.s. CSMX (Sub_BC)• Sub_BC outperforms Alamouti (Rate=1) in PER• Sub_BC without one OFDM symbol decoding (STBC) delay• The transmit diversity gain (up to 8dB at 10% PER or more at 1%

PER in channel B) from CSMX over SMX will– reduce the required high EVM at TX– reduce the required high SNR at RX

• Sub_BC can be implemented to 2xN Alamouti (Rate=1)– For example: 2xN ALA v.s. 2(M)xN CALA in 04/934r2.

• Rate 4(M)xN, M>4 can be implemented to relax the required SNR to support high data rates with four spatial streams if necessary.

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 4

doc.: IEEE 802.11-04/1212r0

Submission

Summary II: Sub_BC v.s. Beamforming (BF)

• Do not require feedback of CSI from RX to TX• Do not require that the channel is reciprocal • All MAC/PHY feedback modes required for BF in

IEEE-04/889r0 can be eliminated. • Simpler MAC without feedback modes greatly improves

the MAC efficiency (i.e., throughput) and complexity.

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 5

doc.: IEEE 802.11-04/1212r0

Submission

Simulation Results• Part I: 20MHz, 48 data subcarriers, 3D Interleaver

– I.1.1: Alamouti v.s. 1(M) CSMX, channel B– I.1.2: Alamouti v.s. 1(M) CSMX, channel E– I.2.1: SMX v.s. CSMX, channel B– I.2.2: SMX v.s. CSMX, channel E

• Part II: 40MHz, 108 data subcarriers, 3D-A Interleaver– II.1.1: Alamouti v.s. 1(M) CSMX, channel B– II.1.2: Alamouti v.s. 1(M) CSMX, channel E– II.2.1: SMX v.s. CSMX, channel B– II.2.2: SMX v.s. CSMX, channel E

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 6

doc.: IEEE 802.11-04/1212r0

Submission

Part I.1.1: Alamouti vs. 1(M) CSMX, channel B

•2x2 Alamouti vs. 1(M)x2 CSMX•2x3 Alamouti vs. 1(M)x3 CSMX•2x4 Alamouti vs. 1(M)x4 CSMX

•20MHz, 3D interleaver

RX Ant. Rate=1 Rate=1 TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 7

doc.: IEEE 802.11-04/1212r0

Submission

2x2 Alamouti vs. 1(M)x2 CSMXChannel B, half lambda, 3D, 20 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX

6 Mbps 24 Mbps 48 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 8

doc.: IEEE 802.11-04/1212r0

Submission

2x3 Alamouti vs. 1(M)x3 CSMX

•1(M) Circulation is easyto implement

•PER performance of 1(M)xN Circulation is better than 2xN ALA.

Channel B, half lambda, 3D, 20 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R

2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX

6 Mbps 24 Mbps 48 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 9

doc.: IEEE 802.11-04/1212r0

Submission

2x4 Alamouti vs. 1(M)x4 CSMXChannel B, half lambda, 3D, 20 MHz

0.01

0.1

1

-5 0 5 10 15 20

SNR (dB)

PE

R2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX

6 Mbps 24 Mbps 48 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 10

doc.: IEEE 802.11-04/1212r0

Submission

Part I.1.2: Alamouti vs. 1(M) CSMX, channel E

•2x2 Alamouti vs. 1(M)x2 CSMX•2x3 Alamouti vs. 1(M)x3 CSMX•2x4 Alamouti vs. 1(M)x4 CSMX

•20MHz, 3D interleaver

RX Ant. Rate=1 Rate=1 TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 11

doc.: IEEE 802.11-04/1212r0

Submission

2x2 Alamouti vs. 1(M)x2 CSMX

Channel E, half lambda, 3D, 20 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R

2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX

6 Mbps 24 Mbps 48 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 12

doc.: IEEE 802.11-04/1212r0

Submission

2x3 Alamouti vs. 1(M)x3 CSMXChannel E, half lambda, 3D, 20 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX

6 Mbps 24 Mbps 48 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 13

doc.: IEEE 802.11-04/1212r0

Submission

2x4 Alamouti vs. 1(M)x4 CSMX

Channel E, half lambda, 3D, 20 MHz

0.01

0.1

1

-5 0 5 10 15 20

SNR (dB)

PE

R

2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX

6 Mbps 24 Mbps 48 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 14

doc.: IEEE 802.11-04/1212r0

Submission

Part I.2.1: SMX vs. CSMX, channel B

•2x2 SMX vs. 2(3)x2, 2(4)x2 CSMX•2x3 SMX vs. 2(3)x3, 2(4)x3 CSMX•2x4 SMX vs. 2(3)x4, 2(4)x4 CSMX•3x3 SMX vs. 3(4)x3 CSMX•3x4 SMX vs. 3(4)x4 CSMX

•20MHz, 3D interleaver

RX Ant. Rate TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 15

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X2 CSMXChannel B, half lambda, 3D, 20 MHz

0.01

0.1

1

15 20 25 30 35 40 45

SNR (dB)

PE

R2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 16

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X3 CSMX

Channel B, half lambda, 3D, 20 MHz

0.01

0.1

1

10 15 20 25 30 35 40

SNR (dB)

PE

R2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 17

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X4 CSMX

Channel B, half lambda, 3D, 20 MHz

0.01

0.1

1

10 15 20 25 30 35 40

SNR (dB)

PE

R

2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 18

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X3 CSMXChannel B, half lambda, 3D, 20 MHz

0.01

0.1

1

20 25 30 35 40 45 50

SNR (dB)

PE

R3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX72 Mbps 144 Mbps 189 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 19

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X4 CSMXChannel B, half lambda, 3D, 20 MHz

0.01

0.1

1

15 20 25 30 35 40 45 50

SNR (dB)

PE

R3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX72 Mbps 144 Mbps 189 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 20

doc.: IEEE 802.11-04/1212r0

Submission

Part I.2.2: SMX vs. CSMX, channel E

•2x2 SMX vs. 2(3)x2, 2(4)x2 CSMX•2x3 SMX vs. 2(3)x3, 2(4)x3 CSMX•2x4 SMX vs. 2(3)x4, 2(4)x4 CSMX•3x3 SMX vs. 3(4)x3 CSMX•3x4 SMX vs. 3(4)x4 CSMX

•20MHz, 3D interleaver

RX Ant. Rate TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 21

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X2 CSMXChannel E, half lambda, 3D, 20 MHz

0.01

0.1

1

15 20 25 30 35 40 45

SNR (dB)

PE

R2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 22

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X3 CSMXChannel E, half lambda, 3D, 20 MHz

0.01

0.1

1

10 15 20 25 30

SNR (dB)

PE

R

2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 23

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X4 CSMXChannel E, half lambda, 3D, 20 MHz

0.01

0.1

1

10 15 20 25 30

SNR (dB)

PE

R2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 24

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X3 CSMXChannel E, half lambda, 3D, 20 MHz

0.01

0.1

1

10 15 20 25 30

SNR (dB)

PE

R2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 25

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X4 CSMXChannel E, half lambda, 3D, 20 MHz

0.01

0.1

1

10 15 20 25 30

SNR (dB)

PE

R2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX

48 Mbps 96 Mbps 126 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 26

doc.: IEEE 802.11-04/1212r0

Submission

Part II.1.1: Alamouti vs. 1(M) CSMX, channel B

•2x2 Alamouti vs. 1(M)x2 CSMX•2x3 Alamouti vs. 1(M)x3 CSMX•2x4 Alamouti vs. 1(M)x4 CSMX

•40MHz, 3D-A interleaver

RX Ant. Rate=1 Rate=1 TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 27

doc.: IEEE 802.11-04/1212r0

Submission

2x2 Alamouti vs. 1(M)x2 CSMXChannel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX

13.5 Mbps 54 Mbps 108 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 28

doc.: IEEE 802.11-04/1212r0

Submission

2x3 Alamouti vs. 1(M)x3 CSMXChannel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R

2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX

13.5 Mbps 58 Mbps 108 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 29

doc.: IEEE 802.11-04/1212r0

Submission

2x4 Alamouti vs. 1(M)x4 CSMXChannel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R

2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX

13.5 Mbps 58 Mbps 108 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 30

doc.: IEEE 802.11-04/1212r0

Submission

Part II.1.2: Alamouti vs. 1(M) CSMX, channel E

•2x2 Alamouti vs. 1(M)x2 CSMX•2x3 Alamouti vs. 1(M)x3 CSMX•2x4 Alamouti vs. 1(M)x4 CSMX

•40MHz, 3D-A interleaver

RX Ant. Rate=1 Rate=1 TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 31

doc.: IEEE 802.11-04/1212r0

Submission

2x2 Alamouti vs. 1(M)x2 CSMX

Channel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R

2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX2X2 ALA1(2)X2 CSMX1(3)X2 CSMX1(4)X2 CSMX

13.5 Mbps 54 Mbps 108 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 32

doc.: IEEE 802.11-04/1212r0

Submission

2x3 Alamouti vs. 1(M)x3 CSMX

Channel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

-5 0 5 10 15 20 25

SNR (dB)

PE

R

2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX2X3 ALA1(2)X3 CSMX1(3)X3 CSMX1(4)X3 CSMX

13.5 Mbps 58 Mbps 108 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 33

doc.: IEEE 802.11-04/1212r0

Submission

2x4 Alamouti vs. 1(M)x4 CSMXChannel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

-10 -5 0 5 10 15

SNR (dB)

PE

R

2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX2X4 ALA1(2)X4 CSMX1(3)X4 CSMX1(4)X4 CSMX

13.5 Mbps 58 Mbps 108 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 34

doc.: IEEE 802.11-04/1212r0

Submission

Part II.2.1: SMX vs. CSMX, channel B

•2x2 SMX vs. 2(3)x2, 2(4)x2 CSMX•2x3 SMX vs. 2(3)x3, 2(4)x3 CSMX•2x4 SMX vs. 2(3)x4, 2(4)x4 CSMX•3x3 SMX vs. 3(4)x3 CSMX•3x4 SMX vs. 3(4)x4 CSMX

•40MHz, 3D-A interleaver

RX Ant. Rate TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 35

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X2 CSMX

Channel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

15 20 25 30 35 40 45

SNR (dB)

PE

R

2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX

108 Mbps 216 Mbps 283.5 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 36

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X3 CSMXChannel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

10 15 20 25 30 35 40

SNR (dB)

PE

R2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX

108 Mbps 216 Mbps 283.5 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 37

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X4 CSMX

Channel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

10 15 20 25 30 35

SNR (dB)

PE

R

2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX

108 Mbps 216 Mbps 283.5 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 38

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X3 CSMXChannel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

20 25 30 35 40 45 50

SNR (dB)

PE

R3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX162 Mbps 324 Mbps 425.25 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 39

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X4 CSMXChannel B, half lambda, 3D-A, 40 MHz

0.01

0.1

1

15 20 25 30 35 40 45

SNR (dB)

PE

R3(3)X4 CSMX3(4)X4 CSMX3(3)X4 CSMX3(4)X4 CSMX3(3)X4 CSMX3(4)X4 CSMX162 Mbps 324 Mbps 425.25 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 40

doc.: IEEE 802.11-04/1212r0

Submission

Part II.2.2: SMX vs. CSMX, channel E

•2x2 SMX vs. 2(3)x2, 2(4)x2 CSMX•2x3 SMX vs. 2(3)x3, 2(4)x3 CSMX•2x4 SMX vs. 2(3)x4, 2(4)x4 CSMX•3x3 SMX vs. 3(4)x3 CSMX•3x4 SMX vs. 3(4)x4 CSMX

•40MHz, 3D-A interleaver

RX Ant. Rate TX Ant. RX Ant. Circulation

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 41

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X2 CSMXChannel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

15 20 25 30 35 40

SNR (dB)

PE

R2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX2(2)X2 CSMX2(3)X2 CSMX2(4)X2 CSMX

108 Mbps 216 Mbps 283.5 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 42

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X3 CSMXChannel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

10 15 20 25 30

SNR (dB)

PE

R2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX2(2)X3 CSMX2(3)X3 CSMX2(4)X3 CSMX

108 Mbps 216 Mbps 283.5 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 43

doc.: IEEE 802.11-04/1212r0

Submission

2(M)X4 CSMX

Channel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

5 10 15 20 25 30

SNR (dB)

PE

R

2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX2(2)X4 CSMX2(3)X4 CSMX2(4)X4 CSMX

108 Mbps 216 Mbps 283.5 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 44

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X3 CSMXChannel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

15 20 25 30 35 40 45

SNR (dB)

PE

R3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX3(3)X3 CSMX3(4)X3 CSMX162 Mbps 324

Mbps425.25 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 45

doc.: IEEE 802.11-04/1212r0

Submission

3(M)X4 CSMXChannel E, half lambda, 3D-A, 40 MHz

0.01

0.1

1

10 15 20 25 30 35

SNR (dB)

PE

R3(3)X4 CSMX3(4)X4 CSMX3(3)X4 CSMX3(4)X4 CSMX3(3)X4 CSMX3(4)X4 CSMX162 Mbps 324 Mbps 425.25 Mbps

October

Jeng-Hong Chen, Pansop Kim, Winbond Electronics

Slide 46

doc.: IEEE 802.11-04/1212r0

Submission

Thank you!!

The dream of 11n greedy data rates comes at extreme cost of required SNR (EVM) if challenged in the real MIMO channels. The proposed circulation transmission explores optimal antenna diversities without feedback, relax the required SNR, and make the speedy dream come true.