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MU-MIMO System Performance of 8TX codebook IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0803 Date Submitted:

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Presentation on theme: "MU-MIMO System Performance of 8TX codebook IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0803 Date Submitted:"— Presentation transcript:

1 MU-MIMO System Performance of 8TX codebook IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0803 Date Submitted: 2009-04-27 Source: Jiann-An Tsai jtsai@sta.samsung.com jtsai@sta.samsung.com Jerry Pi, zpi@sta.samsung.comzpi@sta.samsung.com Bruno Clerckx bruno.clerckx@samsung.combruno.clerckx@samsung.com David Mazzarese d.mazzarese@samsung.comd.mazzarese@samsung.com Samsung Electronics Venue: Re : TGm Call for Contributions for Session 61 Base Contribution: None Purpose: To discuss in the revision of the 802.16m AWD Notice: This document does not represent the agreed views of the IEEE 802.16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and.http://standards.ieee.org/guides/bylaws/sect6-7.html#6http://standards.ieee.org/guides/opman/sect6.html#6.3 Further information is located at and.http://standards.ieee.org/board/pat/pat-material.htmlhttp://standards.ieee.org/board/pat 1

2 Background In the contribution, we evaluate the MU-MIMO system-level performance of 8TX codebook systems under various mobile environments: Urban Macro, Suburban, Urban Micro MU-MIMO is evaluated using 4-bit rank-1 codebook Impact of antenna spacing is also evaluted 2

3 Parameter Assumption Cellular LayoutHexagonal grid, 19 cell sites, 3 sectors per site Inter-site distance500m Distance-dependent path lossL=I + 37.6log 10 (.R), R in kilometers I=128.1 – 2GHz, I=120.9 - 900MHz [5] Shadowing standard deviation8 dB Correlation distance of Shadowing50 m Penetration Loss20dB Antenna pattern [4] (horizontal) (For 3-sector cell sites with fixed antenna patterns) = 70 degrees, A m = 20 dB Carrier Frequency / Bandwidth2GHz Channel modelSpatial Channel Model (SCM) simulations UE speeds of interest3km/h, Total BS TX power (Ptotal) 46dBm - 10MHz carrier Users dropped uniformly in entire cell Minimum distance between UE and cell>= 35 meters Base Station Simulation Parameters

4 – Reference EUTRA UE parameters Parameters Model Assumptions Receiver2 Antennas Antenna gain0 dBi Noise Figure9 dB Mobile Station Simulation Parameters

5 5 System Simulation Parameters ParametersAssumptions OFDM parameters10 MHz (1024 subcarriers) Permutation / ChannelizationLocalized Number of total RU in one subframe48 Number of RU for PMI and CQI calculation4 CQI, PMI feedback periodEvery 1 frame (5ms) Full Sub-band feedback CQI Based on dedicated pilot PMI Based on common pilot/midamble CQI, PMI feedback delay1 frame (5ms) MCS levels16 MCS level-QPSK, QAM16, QAM64 MIMO receiverLMMSE ChannelSCM-Urban Micro Data Channel EstimationIdeal channel estimation HARQ RetransmissionIR Combining, Maximum 4 re-transmissions. SchedulingProportional Fair

6 Summary-MU-MIMO – System-level MU-MIMO simulation results show that the current AWD rank-1 codebook works well as compared propsoed codebook – As shown, slight performance degradation is observed for larger antenna spacing, as expected. 6

7 7 Sector Throughput

8 SIMULATION RESULTS – 8TX MU-MIMO SYSTEM PERFORMANCE (SCM CHANNEL)-URBAN MICRO 8

9 9 Sector Throughput SV-steering vector

10 10 Cell edge Throughput SV-steering vector

11 11 CDF of User Throughput –Light load (4 mobile stations) SV-steering vector

12 12 CDF of User Throughput –Heavy load (12 mobile stations) SV-steering vector

13 SIMULATION RESULTS – 8TX MU-MIMO SYSTEM PERFORMANCE (SCM CHANNEL)-SUBURBAN 13

14 14 Sector Throughput SV-steering vector

15 15 Cell edge Throughput SV-steering vector

16 16 CDF of User Throughput –Light load (4 mobile stations) SV-steering vector

17 17 CDF of User Throughput –Heavy load (12 mobile stations) SV-steering vector

18 SIMULATION RESULTS – 8TX MU-MIMO SYSTEM PERFORMANCE (SCM CHANNEL)-URBAN MICRO 18

19 19 Sector Throughput SV-steering vector

20 20 Cell edge Throughput SV-steering vector

21 21 CDF of User Throughput –Light load (4 mobile stations) SV-steering vector

22 22 CDF of User Throughput –Heavy load (12 mobile stations) SV-steering vector

23 23 Sector Throughput :Urban Macro

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