You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Cell‐average and Cell‐edge spectrum efficiency<br />
Indoor environment (Uplink)<br />
• LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements<br />
• Further improved performance can be achieved by using additional technology features<br />
(e.g., LTE Rel. 8 MU-MIMO 1x4, SU-MIMO 2x4)<br />
Scheme and antenna<br />
configuration<br />
Rel. 8 SIMO 1x4 (A)<br />
Rel. 8 SIMO 1x4 (C)<br />
Rel. 8 MU‐MIMO 1x4 (A)<br />
SU‐MIMO 2 x 4 (A)<br />
Scheme and antenna<br />
configuration<br />
Rel. 8 SIMO 1x4 (A)<br />
Rel. 8 SIMO 1x4 (C)<br />
Rel. 8 MU‐MIMO 1x4 (A)<br />
SU‐MIMO 2 x 4 (A)<br />
Uplink spectral efficiency (FDD), InH<br />
ITU‐R<br />
Requirement<br />
(Ave./Edge)<br />
2.25 / 0.07<br />
2.25 / 0.07<br />
2.25 / 0.07<br />
2.25 / 0.07<br />
Number of<br />
samples<br />
Cell average<br />
[b/s/Hz/cell]<br />
2.25 / 0.07 13<br />
3.3<br />
2.25 / 0.07 10<br />
3.3<br />
2.25 / 0.07 2<br />
5.8<br />
2.25 / 0.07 5<br />
4.3<br />
Uplink spectral efficiency (TDD), InH<br />
ITU‐R<br />
Requirement<br />
(Ave./Edge)<br />
Number of<br />
samples<br />
Cell average<br />
[b/s/Hz/cell]<br />
Cell edge<br />
[b/s/Hz]<br />
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February 2009<br />
© 3GPP 2009 53<br />
Cell‐average and Cell‐edge spectrum efficiency<br />
Microcellular environment (Downlink)<br />
Scheme and antenna<br />
configuration<br />
MU‐MIMO 4 x 2 (C)<br />
MU‐MIMO 4 x 2 (A)<br />
CS/CB‐CoMP 4 x 2 (C)<br />
JP‐CoMP 4 x 2 (C)<br />
MU‐MIMO 8 x 2 (C/E)<br />
MU‐MIMO 4 x 2 (C)<br />
MU‐MIMO 4 x 2 (A)<br />
CS/CB‐CoMP 4 x 2 (C)<br />
JP‐CoMP 4 x 2 (C)<br />
MU‐MIMO 8 x 2 (C/E)<br />
Downlink spectral efficiency (FDD), UMi<br />
www.4gamericas.org February 2011 Page 161<br />
9<br />
7<br />
2<br />
2<br />
3.1<br />
3.1<br />
5.5<br />
3.9<br />
0.23<br />
0.24<br />
0.42<br />
0.25<br />
Cell edge<br />
[b/s/Hz]<br />
• Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum <strong>DL</strong> control overhead<br />
(L = 3)) fulfills ITU-R requirements<br />
• Further improved performance can be achieved by using additional technology features<br />
(e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2, and MU-MIMO 8x2)<br />
Scheme and antenna<br />
configuration<br />
ITU‐R<br />
Requirement<br />
Number<br />
of<br />
Cell average [b/s/Hz/cell]<br />
(Ave./Edge) samples L=1 L=2 L=3<br />
2.6 / 0.075 8 3.5 3.2 2.9<br />
2.6 / 0.075 3 3.4 3.1 2.8<br />
2.6 / 0.075 5 3.6 3.3 3.0<br />
2.6 / 0.075 1 4.5 4.1 3.7<br />
2.6 / 0.075 4 4.2 3.8 3.5<br />
Downlink spectral efficiency (TDD), UMi<br />
ITU‐R<br />
Requirement<br />
Number<br />
of<br />
Cell average [b/s/Hz/cell]<br />
(Ave./Edge) samples L=1 L=2 L=3<br />
2.6 / 0.075 8 3.5 3.2 3.0<br />
2.6 / 0.075 1 3.2 2.9 2.7<br />
2.6 / 0.075 3 3.6 3.3 3.1<br />
2.6 / 0.075 1 4.6 4.2 3.9<br />
2.6 / 0.075 4 4.2 3.9 3.6<br />
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February 2009<br />
© 3GPP 2009 54<br />
L=1<br />
0.10<br />
0.12<br />
0.11<br />
0.14<br />
0.15<br />
L=1<br />
0.11<br />
0.11<br />
0.10<br />
0.10<br />
0.12<br />
0.22<br />
0.23<br />
0.39<br />
0.25<br />
Cell edge [b/s/Hz]<br />
L=2<br />
0.096<br />
0.11<br />
0.099<br />
0.13<br />
0.14<br />
Cell edge [b/s/Hz]<br />
L=2<br />
0.096<br />
0.10<br />
0.092<br />
0.092<br />
0.11<br />
L=3<br />
0.087<br />
0.099<br />
0.089<br />
0.12<br />
0.13<br />
L=3<br />
0.089<br />
0.095<br />
0.086<br />
0.085<br />
0.099
Change language