Presentation is loading. Please wait.

Presentation is loading. Please wait.

Performance Evaluation of Codebooks Proposed for IEEE 802

Published byLucas Blake Modified over 6 years ago

Similar presentations

Presentation on theme: "Performance Evaluation of Codebooks Proposed for IEEE 802"— Presentation transcript:

1 Performance Evaluation of Codebooks Proposed for IEEE 802
Performance Evaluation of Codebooks Proposed for IEEE m Amendment IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09_0588 Date Submitted: Source: David Mazzarese, Bruno Clerckx, Kwanhee Roh, Wang Zhen, Heewon Kang Keun Chul Hwang, Soon-Young Yoon, Hokyu Choi, Jerry Pi, Jiann-An Tsai Samsung Electronics Alexei Davydov, Guangjie Li, Yang-seok, Gregory Morozov Intel Corporation Yang Tang, Yang Tang, Zhigang Rong, Jianmin Lu Huawei Technologies Venue: IEEE m Session#60, Vancouver, Canada IEEE 80216m-09_0012, “Call for Contributions for P802.16m Amendment Text Proposals”. Base Contribution: IEEE C80216m-09_0577 Purpose: Discussion and approval 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 Introduction This contribution presents the system-level performance evaluation of base codebooks: DL: 2Tx, 4Tx, 8Tx UL: 2Tx, 4Tx Text proposal for the amendment with the detailed codebook can be found in the latest revision of the base contribution IEEE C80216m-09_0577

3 Codebook-based feedback
Codebooks are used In uplink feedback for supporting downlink precoding In downling control (UL A-MAP) for uplink precoding SDD supports 3 codebook-based feedback modes Standard: base codebook Adaptive: correlation matrix transformation Differential: differential PMI feedback

4 Base Codebook Analysis

5 Base Codebook Candidates
Reference Antenna configuration Authors Label used in figures 806.16e DL/UL 2Tx (3 bits) DL/UL 4Tx (3 bits, 6 bits) 802.16e 16e C80216m-08/577 DL 2Tx (3 bits) DL 4Tx (6 bits, 4 bits subset) DL 8Tx (4 bits) UL 2Tx (4 bits) UL 4Tx (6bits) Alexei Davydov David Mazzarese Yang Tang 09/577 C802.16m-08_983 C80216m-MIMO-08/69 DL 2Tx (same as 577) DL 4Tx (4 bits) Jaewan Kim Kim_4bit C80216m-08_1101 C80216m-MIMO-08/74 Bishwarup Mondal Mondal_4bit C80216m-MIMO-08_067 DL 4Tx (6 bits) Shaohua li Li_6bit C80216m-08/916 C80216m-08/1264r1 Ron Porat Porat_4bit

6 Measures of Codebook Goodness
Description Throughput First and foremost measure Feedback overhead Codebook size (number of bits) DFT structure Best for calibrated correlated linear arrays Block-diagonal matrices Adapted for dual polarized arrays at BS Full nested property Ranks 2, 3 and 4 matrices are composed of rank 1 precoders: CQI computation complexity reduction Constant modulus matrix elements Good for power amplifier transmit power balance, good for PAPR in precoded systems QPSK alphabet CQI computation complexity reduction by avoiding numerous complex multiplications

7 Comparison of 4Tx Codebooks
09/577 Kim_4bit Mondal_4bit Li_6bit Porat_4bit Feedback overhead 3/6 bits 4 bits 6 bits Performance (SLS) C: bad U: good C: good U: bad DFT structure No Yes Pure Structure for dual-polarized arrays Full nested property Constant modulus QPSK alphabet Partially C: correlated channels U: uncorrelated channels

8 Performance Evaluation

9 Simulation Environments
CL SU MIMO SLS in DL 4x2 ULA: uncorrelated, correlated BS CL MU MIMO (ZFBF) SLS in DL 4x2 CL MU MIMO (ZFBF) SLS in DL 8x2 ULA: correlated BS CL SU MIMO SLS in UL 2Tx and 4Tx ULA: uncorrelated

10 BS Antenna Array Configurations

11 DL 2x2 CL MU MIMO (ZFBF)

12 DL 4x2 CL SU MIMO (uniform linear array)

13 DL 4x2 CL SU MIMO (dual-polarized arrays)

14 DL 4x2 CL MU MIMO (ZFBF) (uniform linear array)
With transformation

15 DL 4x2 CL MU MIMO (ZFBF) (split linear array)
With transformation

16 DL 4x2 CL MU MIMO 09/577 4Tx base codebook offers the most robust choice without transformation Compared to other 6bit codebook candidates, the hierarchical structure associated with the 09/577 4Tx base codebook can save the codeword searching complexing by 70% 09/577 4bit subset codebook offers the most robust performance with transformation and a good tradeoff between performance and feedback overhead

17 DL 8x2 CL MU MIMO Cf C80216m-09_0442

18 Uplink Precoding Simulation Assumptions 10MHz, 1024 FFT
2 and 4TX antenna at MS 2 Rx antennas at BS MCS selection (QPSK, 16QAM, CTC R=1/2, 3/4) Rank adaptation (rank-1, rank-2) Extended ITU Ped.-B (3kmph) channel 2 frames feedback delay

19 Link Level Simulations

20 Proposed Amendment Text
Cf latest revision of C80216m-09_0577

21 Appendix Downlink System-Level Simulation Assumptions

22 2 transmitter, 2 receiver [2Tx, 2Rx]
Number of Antennas 2 transmitter, 2 receiver [2Tx, 2Rx] 4 transmitter, 2 receiver [4Tx, 2Rx] 4 transmitter, 4 receiver [4Tx, 4Rx] Antenna configuration ULA: 0.5 lambda; 4 lambda, 10 lambda Split Linear Array, Dual Polarized Array MIMO Scheme Closed-loop single user with dynamic rank adaptation Zero-forcing multiple user MIMO Schedule from 1 to 2 users dynamically based on the same rank-1 PMI feedback. No SU/MU mode adaptation. Channel Model Modified Ped-B 3km/h Channel correlation Scenario 1. Uncorrelated Channel : 4 lambda antenna spacing, angular spread of 15 degrees 2. High correlated channel: 0.5 lambda antenna spacing, angular spread of 3 degree PAPR 1. No constraint on per-antenna power imbalance 2. Limitation of per-antenna power imbalance by scaling in every subframe Antenna Calibration Ideal antenna calibration (mandatory) Uncalibrated antennas (optional) Random phase on each transmit antenna + Random delay between each pair of adjacent transmit antennas (uniformly distributed between 0 and N samples) Fixed for one drop

23 OFDM symbols per subframe 6 Permutation Localized
OFDM parameters 10 MHz (1024 subcarriers) OFDM symbols per subframe 6 Permutation Localized Number of total RU in one subframe 48 Scheduling Unit Whole band (48 PRUs) 12 subbands 1 subband = 4 consecutive PRUs 1 PMI and 1 CQI feedback per subband Number of RU for PMI and CQI calculation 4 which is same as in IEEE e CQI, PMI feedback period Every 1 frame (5ms) Feedback delay 1 frame (5ms) Link Adaptation (PHY abstraction) QPSK 1/2 with repetition 1/2/4/6, QPSK 3/4, 16QAM 1/2, 16QAM 3/4, 64QAM 1/2, 64QAM 2/3, 64QAM 3/4, 64QAM 5/6

24 Linear Minimum Mean Squared Error (LMMSE) Data Channel Estimation
HARQ Chase combining, non-adaptive, asynchronous. HARQ with maximum 4 retransmissions, 4 subframes ACK/NACK delay, no error on ACK/NACK. HARQ retransmission occurs no earlier than the eighth subframe after the previous transmission. Scheduling No control overhead, 12 subbands of 4 PRUs each, latency timescale 1.5s MIMO receiver Linear Minimum Mean Squared Error (LMMSE) Data Channel Estimation Perfect data channel estimation Feedback Channel Measurement Perfect feedback channel measurement Cellular Layout Hexagonal grid, 19 cell sites, wrap-around, 3 sectors per site Distance-dependent path loss L= log10(.R), R in kilometers Inter site distance 1.5km Shadowing standard deviation 8 dB Antenna pattern (horizontal) (For 3-sector cell sites with fixed antenna patterns) = 70 degrees, Am = 20 dB Users per sector 10 (EMD) Scheduling Criterion Proportional Fair (PF for all the scheduled users) Feedback channel error rate No error

Download ppt "Performance Evaluation of Codebooks Proposed for IEEE 802"

Similar presentations

MBS Frame Structure Considerations IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16m-08/089 Date Submitted: 2008-01-16.

MBS Frame Structure Considerations IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE S802.16m-08/089 Date Submitted:
1 Random Sequence Generator Issue (AWD-15.3.8) IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09/1311r2 Date Submitted:

1 Random Sequence Generator Issue (AWD ) IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09/1311r2 Date Submitted:
Sounding Antenna Switching for IEEE 802.16m Amendment Working Document IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-0848.

Sounding Antenna Switching for IEEE m Amendment Working Document IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-0848.
8Tx Dedicated Pilot Pattern Simulation Results IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0805 Date Submitted:

8Tx Dedicated Pilot Pattern Simulation Results IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0805 Date Submitted:
8Tx Pilot Pattern Performance for IEEE 802.16m IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0544 Date Submitted:

8Tx Pilot Pattern Performance for IEEE m IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0544 Date Submitted:
1 Performance comparison of Modulation and Coding set for IEEE 802.16m system Document Number: IEEE C802.16m-09/0555r3 Date Submitted: 2009-03-02 Source:

1 Performance comparison of Modulation and Coding set for IEEE m system Document Number: IEEE C802.16m-09/0555r3 Date Submitted: Source:
Performance Evaluation of Transformation Codebook for 8TX IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/2731.

Performance Evaluation of Transformation Codebook for 8TX IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/2731.
Performance Evaluation of MIMO midamble design for IEEE 802.16m IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/1237.

Performance Evaluation of MIMO midamble design for IEEE m IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/1237.
1 Pilot Pattern for 8-Stream Transmission Document Number: IEEE C80216m-09/1138 Date Submitted: 2009-05-01 Source: Debdeep Chatterjee, Jong-kae (JK) Fwu,

1 Pilot Pattern for 8-Stream Transmission Document Number: IEEE C80216m-09/1138 Date Submitted: Source: Debdeep Chatterjee, Jong-kae (JK) Fwu,
1 Performance comparison of Modulation and Coding set for IEEE 802.16m system Document Number: IEEE C802.16m-09/0555r2 Date Submitted: 2009-03-02 Source:

1 Performance comparison of Modulation and Coding set for IEEE m system Document Number: IEEE C802.16m-09/0555r2 Date Submitted: Source:
MU-MIMO System Performance of 8TX codebook IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0803 Date Submitted:

MU-MIMO System Performance of 8TX codebook IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-09/0803 Date Submitted:
Performance Evaluation of Codebooks Proposed for IEEE 802.16m Amendment IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09_0344.

Performance Evaluation of Codebooks Proposed for IEEE m Amendment IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09_0344.
Title: Evaluation of DL MIMO Schemes: OL SU Spatial Multiplexing with 2-D MMSE channel estimation Document Number: IEEE C802.16m-08/1043r2 Date Submitted:

Title: Evaluation of DL MIMO Schemes: OL SU Spatial Multiplexing with 2-D MMSE channel estimation Document Number: IEEE C802.16m-08/1043r2 Date Submitted:
MIMO midamble sequence proposal (AWD-15.3.5) IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE S80216m-09/1313 Date Submitted:

MIMO midamble sequence proposal (AWD ) IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE S80216m-09/1313 Date Submitted:
Performance Evaluation of Pilots for MIMO Mode 5 (CDR) IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE S80216m-09_2253 Date.

Performance Evaluation of Pilots for MIMO Mode 5 (CDR) IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE S80216m-09_2253 Date.
1 Uplink MIMO Proposal for IEEE 802.16m Document Number: S80216m-08/744 Date Submitted: July 16, 2008 Source: shaohua Nokia Siemens.

1 Uplink MIMO Proposal for IEEE m Document Number: S80216m-08/744 Date Submitted: July 16, 2008 Source: shaohua Nokia Siemens.
Distributed Sounding Channel – Simulation Results Document Number: IEEE C802.16m-09/0749 Date Submitted: 2009-03-10 Source: Bishwarup Mondal, Fan Wang,

Distributed Sounding Channel – Simulation Results Document Number: IEEE C802.16m-09/0749 Date Submitted: Source: Bishwarup Mondal, Fan Wang,
1 Comparison of DL Pilot Patterns IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-08/798r1 Date Submitted: 2008-07-07.

1 Comparison of DL Pilot Patterns IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-08/798r1 Date Submitted:
MLD Performance for CL MU-MIMO with ZF precoding (AWD -15.3.6) IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09/1312.

MLD Performance for CL MU-MIMO with ZF precoding (AWD ) IEEE Presentation Submission Template (Rev. 9) Document Number: IEEE C80216m-09/1312.
Hybrid ARQ for synchronous allocation in distributed subcarrier mode Document Number: S80216m-08_290r1 Date Submitted: 2008-05-05 Source: Alexei Davydov.

Hybrid ARQ for synchronous allocation in distributed subcarrier mode Document Number: S80216m-08_290r1 Date Submitted: Source: Alexei Davydov.

Similar presentations

Ads by Google