DL Pilot Comparison Results Document Number: IEEE C802.16m-08/649 Date Submitted: 07-07-2008 Source: Jiacheng Huaning

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Presentation transcript:

DL Pilot Comparison Results Document Number: IEEE C802.16m-08/649 Date Submitted: Source: Jiacheng Huaning Jong-kae (JK) Yuval Sassan Hujun Yin Intel Corp. Venue: IEEE Session #56, Denver. Base Contributions: None Purpose: Call for Contributions on Project m System Description Document (SDD): DL pilot comparison Notice: This document does not represent the agreed views of the IEEE 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 Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and. Further information is located at and.

2 Simulation Configuration LLS simulation defined by pilot comparison criterion in IEEE C802.16m-08/518 Appendix A Narrow band MMSE channel estimation –Per tile channel estimation –5 us window –Doppler window is flat with Doppler frequency matched to mobile speed 120km/h Interference Limited Simulation –Two neighboring BSs’s signals are the interference –INR =10dB –Full loading –X-axis is SINR (signal power over interference + noise ratio), Y-axis is Throughput (bit per subcarrier).

3 Pilot Boosting Pilot boosting values are defined as the pilot boosting power over average non-boosted power of data tones from each single stream. –For 2 streams MIMO, 5dB pilot boosting has a net gain of 2dB over combined data tones due to the null in one pilot stream.

4 1/2 Pilot Streams – SM case

5 Noise-limited, eITU PB3, 2x2 SM

6 Noise-limited, eITU VA120, 2x2 SM

7 Interference-limited, eITU PB3, 2x2 SM

8 Interference-limited, eITU VA120, 2x2 SM

9 Conclusions for 2x2 SM Each pattern has almost the same performance for noise-limited Intel-old and Intel-ITRI-PosData-MediaTek harmonized pattern have better performance in interference limited case due to pilot interlace Intel-old and Intel-ITRI-PosData-MediaTek harmonized pattern have almost the same performance

10 1/2 Pilot Streams – STBC/SFBC case

11 Noise-limited, eITU PB3, 2x2 SFBC

12 Noise-limited, eITU PB3, 2x2 STBC

13 Noise-limited, eITU VA120, 2x2 SFBC

14 Noise-limited, eITU VA120, 2x2 STBC

15 Noise-limited, eITU VA350, 2x2 SFBC

16 Noise-limited, eITU VA350, 2x2 STBC

17 Interference-limited, eITU PB3, 2x2 SFBC

18 Interference-limited, eITU PB3, 2x2 STBC

19 Interference-limited, eITU VA120, 2x2 SFBC

20 Interference-limited, eITU VA120, 2x2 STBC

21 Interference-limited, eITU VA350, 2x2 SFBC

22 Interference-limited, eITU VA350, 2x2 STBC

23 Conclusions for 2x2 STBC/SFBC Each pattern has almost the same performance for noise-limited Intel’s pattern has a little gain than others Intel’s pattern has a lager gain for VA350 channel, interference-limited Intel-old and Intel-ITRI-PosData-MediaTek harmonized pattern have almost the same performance

24 4 Pilot Streams – SM case

25 Noise-limited, eITU PB3, 4x4 SM

26 Noise-limited, eITU VA120, 4x4 SM

27 Noise-limited, eITU VA350, 4x4 SM

28 Interference-limited, eITU PB3, 4x4 SM

29 Interference-limited, eITU VA120, 4x4 SM

30 Interference-limited, eITU VA350, 4x4 SM

31 Conclusions for 4x4 SM Intel, Samsung, Med have the same performance, and better than MOT, LG Intel’s pattern has more gain than others for interference-limited, low SINR region (with the same pilot boosting)

32 Back Up: All pilot patterns used in the simulations

33 2x2 Pilot Patterns – Intel Boost (per stream): 7dB

34 2x2 Pilot Patterns – Samsung Boost unspecified, use 3dB (per stream) as default

35 2x2 Pilot Pattern - LG Boost unspecified, use 3dB (per stream) as default

36 2x2/4x4 Pilot Pattern - Motorola

37 2x2 Pilot Pattern - MediaTek

38 2x2 Pilot Pattern – Intel, ITRI, PosData, MediaTek harmolized (C80216m-08_648.doc)

39 4x4 Pilot pattern - Intel Boost (per stream): 8dB

40 4x4 Pilot pattern - Samsung Boost (per stream): 6dB (default)

41 4x4 Pilot pattern - LGE Boost (per stream): 6dB (default)

42 4x4 Pilot pattern - MediaTek Boost (per stream): 6dB (default)