Per-user unitary rate control: Difference between revisions

Revision as of 06:35, 16 October 2017

Revision as of 06:36, 16 October 2017

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'''Per-Useruser Unitaryunitary Raterate Controlcontrol''' ('''PU²RC''') is a multi-user MIMO scheme. PU²RC uses both transmission pre-coding and multi-user scheduling. By doing that, the network capacity is further enhanced than the capacity of the single-user MIMO scheme.

* Background technologies: A single-user MIMO was initially developed to improve the spectral efficiency of point-to-point wireless transmission link. A multi-user MIMO was developed for cellular systems where the base station simultaneously communicates with multiple users.

* Principle: The concept of Per-User Unitary Rate Control (PU²RC) was proposed in [http://www.google.com/patents/about?id=lpWnAAAAEBAJ&dq=7,324,480 US Patent No. 7,324,480, ''Mobile communication apparatus and method including base station and mobile station having multi-antenna''] by James S. Kim, Kwang Bok Lee, Kiho Kim and Changsoon Park.

Recently, PU²RC has been adopted in the IEEE 802.16m system description documentation (SDD) and the concept of this scheme was included in 3GPP [[3GPP Long Term Evolution|LTE]] standard.

==Technology==

Per-Useruser Unitaryunitary Raterate Controlcontrol (PU²RC) is a practical multi-user [[MIMO]] solution. PU²RC allows a base station to transmit different data streams to multiple users simultaneously. The base station selects target users from candidate users based on the information fed by users. Transmission data are multiplied by a pre-coding matrix selected from the set of predefined matrices before transmission. The selection of a pre-coding matrix is determined based on the information provided by users. The selection of both target users and a pre-coding matrix according to the information provided by mobiles enables the utilization of multi-user diversity and data multiplexing at the same time. Moreover. Using predefined precoding matrices reduces feedback overhead from users to the base station. Pre-coding matrices used in this scheme is unitary. The use of unitary pre-coding matrices facilitates the estimation of interference from other users’users' data to the unintended user.

==Mathematical description==

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* James S. Kim, K. B. Lee, et al., Mobile communication apparatus and method including base station and mobile station having multi-antenna, US PTO 7,324,480

* [http://mobile.snu.ac.kr/mcl_list/papers/journal/IEICEtcomm_200608_sjkim_hjkim_cspark_kblee.pdf S. J. Kim, H. J. Kim, C. S. Park, and K. B. Lee, "On the Performance of Multiuser MIMO Systems in WCDMA/HSDPA: Beamforming, Feedback and User Diversity," IEICE Transactions on Communications, vol. E98-B, no. 8, pp. 2161–2169, Aug. 2006.]

* 3GPP TSG RAN WG1#31 R1-030354, [http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_31/docs/Zips/R1-030354.zip Per unitary basis stream user and rate Control (PU2RC)], 3GPP TSG-R1-030354, Tokyo, Fed 18-2118–21, 2003. (See also R1-030130)

* Samsung, SNU, [http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_44/Docs/R1-060335.zip "Downlink MIMO for EUTRA," in 3GPP TSG RAN WG1 # 44/R1-060335]

=== Enhanced methods ===

* [http://mobile.snu.ac.kr/mcl_list/papers/conference/ew200504_sjkim_hjkim_kblee.pdf Multiuser MIMO Scheme for Enhanced 3GPP HSDPA]

* Kim, J.S., Hojin Kim, Yongxing Zhou, Jianjun Li, `'`Multi-Mode Multi-User MIMO System with Finite Rate Feedback'', IEEE Wireless Communication Systems, 2006. ISWCS '06. 3rd International Symposium on, 6-86–8 Sept.Sep 2006''

===Background references===

* R. W. Heath, Jr., M. Airy, and A. J. Paulraj, "Multiuser Diversity for MIMO Wireless Systems with Linear Receivers," Proc. of the IEEE Asilomar Conf. on Signals, Systems, and Computers, pp. 1194 –1199, vol.2, Pacific Grove, California, 4–7 Nov. 4 - 7, 2001.

* A. Kogiantis and L. Ozarow, "Downlink best-effort packet data with multiple antennas," ICC’03ICC'03, Volume 1, 11–15 May 2003 Page(s):715 -– 719.

* K.K. Wong, R.D. Murch and K.B. Letaief, "Performance Enhancement of Multiuser MIMO Wireless Communication Systems," IEEE Transactions on Communications, Vol 50 No 12, Dec. 2002, pp 1960 –1970

* Further benefits of the revised definition of CQI for TxAA, 3GPP TSG-R1-030130, San Diego, 7–10 Jan. 7-10, 2003.

==Major Citations==

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:* Page 237, Per-User Unitary Rate Control (PU²RC). This algorithm is based on the singular value decomposition of the MIMO channels.

[3] [https://www.amazon.com/dp/0470015756 Radio Network Planning and Optimisation for UMTS by Jaana Laiho, Achim Wacker, and Tomá Novosad (Hardcover -– Feb 10, 2006)]

:* Page 366: "... backward incompatibility with previous standard releases. Per-User Unitary Rate Control (PU²RC) is based on the singular value decomposition of MIMO .

[4] [https://www.amazon.com/dp/0849341906 MIMO System Technology for Wireless Communications (Electrical Engineering and Applied Signal Processing) by George Tsoulos (Hardcover -– Mar 28, 2006)]

:* Page 237: "... I due to additional transmit antennas. Per-User Unitary Rate Control (PU²RC). This algorithm is based on the singular value decomposition of ..."

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[3] [http://www.dbpia.co.kr/view/ar_view.asp?pid=243&isid=35948&arid=747821&topMenu=&topMenu1= M. Cho, Y. Kim, D. Hong, ''Feedback Reduction of Channel Quality Information for Multiuser MIMO Systems'', pp. 798~803 (6 pages), UCI : G300-j12264717.v31n8Ap798]

[4] Tae Hyun Kim, Robert W. Heath Jr., Sunghyun Choi, [http://www-vs.informatik.uni-ulm.de/de/intra/bib/2008/ICC/DATA/S08S07P02.PDF "Multiuser MIMO Downlink with Limited Feedback using Transmit-Beam Matching,"], IEEE ICC2008

:* Page 5, [10] Samsung, SNU, Downlink MIMO for EUTRA, 3GPP TSG RAN WG1 44/R1-060335.

[5] M. Trivellato, F. Boccardi, and H. Huang, [http://www.dei.unipd.it/~trivella/papers/TBH_PIMRC08.pdf "Zero-Forcing vs Unitary Beamforming in Multiuser MIMO Systems with Limited Feedback,"] in Proc. PIMRC 2008, Cannes, France, Sept. 2008.

:* Page 6: [9] Samsung, SNU, "Downlink MIMO for EUTRA," 3GPP TGS RAN WG1,R1-060335, Feb. 2006.

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:* Page 22, [5] Samsung, SNU, "Downlink MIMO for EUTRA," in 3GPP TSG RAN WG1#44/R1-060335.

[7] N. Ravindran, N. Jindal, and H. Huang, [http://www.ece.umn.edu/~nihar/papers/mimo_bc_los.pdf Beamforming with Finite Rate Feedback for LOS MIMO Downlink Channels], IEEE Globecom, Nov. 2007.

:* Page 5, [5] Samsung, SNU, "Downlink MIMO for EUTRA," 3GPP TSG RAN WG1 #No. 44, no. R1-060335, Feb. 2006.

[8] [http://repositories.lib.utexas.edu/bitstream/handle/2152/4007/huangd43238.pdf;jsessionid=833A1B4DC55EF8559ADEAB83165DEE86?sequence=2 Kaibin Huang, MIMO Networking with Imperfect Channel State Information, Ph.D. Thesis, UTexas, Supervisor: Jafferey G. Andrews, May 2008]

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[9] [http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4641946, Love, D.J., Heath, R.W.' Lau, V.K.N. Gesbert, D., Rao, B.D., Andrews, M., An overview of limited feedback in wireless communication systems, JSAC 2008]

[10] W Choi, A Forenza, JG Andrews, RW Heath Jr, [http://users.ece.utexas.edu/~rheath/papers/2006/tc_OSDMA/paper.pdf "Opportunistic space-division multiple access with beam selection"], IEEE Transactions on Communications, 2007

:* Page 16, [25] S. J. Kim, H. Kim, C. S. Park, and K. B. Lee, "Space-time technique for wireless multiuser MIMO systems with SIC receivers," Proc. IEEE Int. Symp. on Pers., Indoor and Mobile Radio Comm., vol. 3, pp. 2013–2017, Sep. 2004.

:* Page 16, [26] S. J. Kim, H. Kim, M. Kountouris, A. Forenza, C. S. Park, and K. B. Lee, "Efficient feedback signaling using multi-channel selection diversity for multi-user MIMO systems," Proc. of Wireless World Research Forum, Mar. 2005.

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[11] Seong-Bo Shim, Sung Kyo Kang, and Yun Hee Kim°, [http://mnet.skku.ac.kr/data/2007data/JCCI2007/papers/pdf/III-A-6.pdf Capacity Comparison of Multiuser MIMO-OFDM Transmission with Limited Feedback]

[12] N. Ravindran, and N. Jindal, [http://www.ece.umn.edu/~nihar/papers/mud_vs_quant_journal.pdf Multi-User Diversity vs. Accurate Channel State Information in MIMO Downlink Channels], Submitted to IEEE Trans. Communications, July 2009.], [http://www.ece.umn.edu/~nihar/mud_csi_code.html (Matlab Code)]

:* Page 20, [15] J. Kim, H. Kim, C. Park, and K. Lee, "On the performance of multiuser MIMO systems in WCDMA/HSDPA: Beamforming, feedback and user diversity," IEICE Trans. on Commun., vol. 89, no. 8, pp. 2161–2169, 2006.

[13] Bartosz Mielczarek and Witold A. Krzymien, [http://www.lcs.poli.usp.br/isssta2006/isssta_cd/M4.pdf "Vector Quantization of Channel Information in Linear Multi-User MIMO Systems"], 2006 IEEE 9th International Symposium on Spread Spectrum Techniques and Applications

[14] Mohammad Ali Khojastepour, Xiaodong Wang, and Mohammad Madihian, [http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&isnumber=&arnumber=4558660 "Quantized Linear MIMO Precoding for Multiuser Downlink Systems"], CISS 2008

:* Page 306, J.S. Kim, H. Kim, and K.B. Lee, "Limited feedback signaling for MIMO broadcast channels," in 2005 IEEE 6th Workshop on Signal Processing Advances in Wireless Communications, New York,USA, June 2005.

[15] Peilu Ding, Member, IEEE, David J. Love, Member, IEEE, and Michael D. Zoltowski, Fellow, IEEE, [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.85.3380&rep=rep1&type=pdf "Multiple Antenna Broadcast Channels With Shape Feedback and Limited Feedback"], IEEE Transactions on Signal Processing, 2007, http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=04244670

:* Page 3427, [36] J. S. Kim, H. Kim, and K. B. Lee, "Limited feedback precoding for wireless MIMO broadcast channels," in Proc. IST Mobile Wireless Commun. Summit, Jun. 2005.

[16] Peilu Ding, Love, D.J., Zoltowski, M.D.,[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4151394 WLC26-2: Limited Feedback in Multiple Antenna Broadcast Channels], Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE

:* Page 5, [14] J. S. Kim, H. Kim, and K. B. Lee, "Limited feedback precoding for wireless MIMO broadcast channels," in Proc. IST: Mobile and Wireless Commun. Summit, June 2005.

[17] [http://mnet.skku.ac.kr/data/2008data/VTC2008/DATA/03-13-01.PDF H Chae, Y Kim, JH Yang, BC Ihm, DK Kim, "Multimode Random Beamforming for Multiuser Downlink MIMO System with Limited Feedback", Proc. IEEE Veh. Technol. Conf, 2008 -– mnet.skku.ac.kr]

:* Page 5, [5] J. Kim, H. Kim, C. S. Park, and K. B. Lee, "On the Performance of Multiuser MIMO Systems in WCDMA/HSDPA: Beamforming, Feedback and User Diversity", IEICE Trans. Comm. Vol. E89-B, pp.2161 -– 2169, Aug. 2006

[18] [http://portal.acm.org/citation.cfm?id=1803141 Caihua Zhang, Wei Xu, Ming Chen, Multi-mode transmission for MIMO broadcast channels with PU2RC, Proceedings of the 15th Asia-Pacific conference on Communications, 277-280277–280, 2009]

===Slide and documentations===

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=== PU2RC related issues ===

# [http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_31/docs/Zips/R1-030354.zip 3GPP TSG RAN WG1#31, R1-030354, Per unitary basis stream user and rate Control (PU2RC), 3GPP TSG-R1-030354, Tokyo, Fed 18-2118–21, 2003. (See also R1-030130)]

# [http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_44/Docs/R1-060335.zip 3GPP, TSG RAN WG1#44/R1-060335 "Downlink MIMO for EUTRA," Samsung and SNU]

# [http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_49/Docs/R1-072401.zip 3GPP, R1-072401, User Grouping Method for PU2RC Downlink MU-MIMO, Alcatel-Lucent]