UL MIMO Structures for 16 m Document Number

UL MIMO Structures for 16 m Document Number: C 802. 16 m-08/691 Date Submitted: 2008 -07 -07 Source: Jianjun. Li, Dongjun Lee, Jungnam Yun, Zhengzi Li, Jaehyeong Kim Email: jianjun. li@posdata. co. kr jnyun@posdata-usa. com POSDATA Co, Ltd. 276 -2, Seohyeon-dong, Bundang-gu, Seongnam-si, Kyeonggi-do, 463 -775, Korea Venue: IEEE 802. 16 m-08/024 “Call for Contributions on Project 802. 16 m System Description Document (SDD)”, In response to the following topics: “Uplink MIMO schemes” Purpose: To be discussed and adopted by TGm for the 802. 16 m SDD. 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: <http: //standards. ieee. org/guides/bylaws/sect 6 -7. html#6> and <http: //standards. ieee. org/guides/opman/sect 6. html#6. 3>. Further information is located at <http: //standards. ieee. org/board/pat-material. html> and <http: //standards. ieee. org/board/pat >. 1

Overview q This contribution presents UL MIMO for 16 m q Here we proposed a UL MIMO structure with following characteristics ü Support 2 Tx antennas at MS side ü Support CL-SU MIMO for localized RB allocation for UL MIMO ü Hybrid SU-MIMO and MU-MIMO CSM for 4 Rx antennas at BS side o Each MS work in SU-MIMO with 2 Tx antenna o The whole UL is in CSM(MU-MIMO) by pairing 2 MS together with 4 Rx antennas at the BS ü Support hybrid diversity mode and SM mode for CSM o The MS with lower SINR work in diversity SU-MIMO mode o The MS with higher SINR work in SM SU-MIMO Mode ü Support multiple codebook for CL-MIMO MS in CSM

Advantage of Proposed UL MIMO q Pros • Support 2 Tx antennas at the MS; ü Increase peak data rate of UL for MS • Support 2 MIMO Mode for 2 BS Rx antennas ü SU-MIMO Mode (Only 1 MS with 2 Tx antennas) ü MU-MIMO CSM mode(pair 2 MSs together with 1 Tx antennas) SU-MIMO CSM

Advantage of Proposed UL MIMO q Pros • Support 4 Rx antennas at the BS; ü Increase peak data rate of UL for BS • Support 2 MIMO Mode for 4 BS Rx antennas ü Hybrid SISO-MIMO CSM Mode ü 1 MS with 2 Tx antennas. 2 MSs with 1 Tx antennas ü SU-MIMO CSM mode (pair 2 MSs together with 2 Tx antennas) Hybrid SISO-MIMO CSM SU-MIMO CSM

Advantage of Proposed UL MIMO q Pros • SU-MIMO CSM; ü Diversity can be employed for MS with lower SINR ü SM can be employed for MS with higher SINR Hybrid Diversity and SM Mode CSM Full SM mode CSM

Advantage of Proposed UL MIMO q Pros • Support Close Loop SU-MIMO for Localized RB; ü Unitary codebook based precoding for SU-MIMO ü Precoding matrix V of MS comes from an unitary codebook C ü Unitary codebook based precoding for SU-MIMO CSM ü Precoding matrix V 1 of MS 1 comes from an unitary codebook C ü Precoding matrix V 2 of MS 2 comes from an unitary codebook C ü Precoding matrix of the overall UL at the BS can be expressed by q Pros • Support Multi-Mode codebook; ü Codebook size for SU-MIMO is N ü Codebook size for overall system of SU-MIMO CSM is N 2 ü SU-MIMO uses lager size codebook. SU-MIMO CSM uses smaller one

Text Recommendations for SDD Section 11 Physical Layer Section 11. x UL MIMO structure – UL MIMO has following characteristics ü Support 2 Tx antennas at MS side ü Support CL-SU MIMO for localized RB allocation for UL MIMO ü Hybrid SU-MIMO and MU-MIMO CSM for 4 Rx antennas at BS side o Each MS work in SU-MIMO with 2 Tx antenna o The whole UL is in CSM(MU-MIMO) by pairing 2 MS together with 4 Rx antennas at the BS ü Support hybrid diversity mode and SM mode for CSM o The MS with lower SINR work in diversity SU-MIMO mode o The MS with higher SINR work in SM SU-MIMO Mode ü Support multiple codebook for CL-MIMO MS in CSM o SU-MIMO can use larger size codebook o SU-MIMO CSM should use small size codebook 7