Pilot Patterns for 16m 4x6 PUSC Tile Document Number: IEEE C802.16m-09/0139r1 Date Submitted: 2009-01-05 Source: Chih-Yuan Lin

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Pilot Patterns for 16m 4x6 PUSC Tile Document Number: IEEE C802.16m-09/0139r1 Date Submitted: Source: Chih-Yuan Lin Pei-Kai Liao ), Yu-Hao Chang Ciou-Ping Wu and Paul Cheng MediaTek Inc. Dongsheng Yu Sophie Vrzic, Mo-Han Fong Robert Hosein Nikopourdeilami, Kathiravetpillai Sivanesan Nortel Venue: IEEE m-08/052 Call for Comments on Project m SDD (802.16m-08/003r6), Section Uplink Physical Structure for Legacy Support Base Contribution: N/A Purpose: Propose to be discussed and adopted by TGm for the use in Project m SDD 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.

Tile Structures ▪ For two-stream case, there are three possible pilot patterns ▪ For 1-stream case, there are three possible pilot patterns P1P2 P1 Time Freq. P1P2 P1 Time Freq. Tile 2-1Tile 2-2 P1 Time Freq. Tile 2-3 P1 Time Freq. P1 Time Freq. Tile 1-1Tile 1-2 Tile 1-3

Simulation Results (1/3) ▪ Simulation parameters –MIMO case: 2x2 spatial multiplexing setting MMSE detector to recover source symbols –SIMO case: 1x4 setting Maximal ratio combing (MRC) signals from 4 receive antennas –Channel estimator: 2D-MMSE Optimized to predefined velocity speed 60 km/hr Optimized to predefined channel delay spread 5 us –Channel models PB 3 km/hr VA 120 km/hr –Power boosting: 0 dB –4 MCS levels QPSK ½, QPSK ¾, 16QAM ½, 16QAM ¾

Simulation Results (2/3) ▪ MIMO case PB 3 km/hr VA 120 km/hr

Simulation Results (3/3) ▪ SIMO case PB 3 km/hrVA 120 km/hr

Conclusion ▪ For MIMO case, tiles 2-1 and 2-2 have highly close performances – Tile 2-2 has slightly better performance at high mobility case –4-pilot tile can significantly outperform 6-pilot tile at low-mobility case while at high-mobility case 4-pilot and 6-pilot tiles have similar performances –Recommend to adopt tile 2-2 for 2-stream case ▪ For SIMO case, all tiles perform highly similar at low-mobility case – Tile 1-2 have relatively better performance at high-mobility case –Recommend to adopt tile 1-2 for single-stream case

Text proposal ▪ Distributed Resource Unit for 16m PUSC …Figure 38 shows a tile structure when a subframe has 6 symbols. Pilot pattern is TBD. Figure 38. Tile structures for 16m PUSC P1P2 P1 Time Freq. P1 Time Freq.