Method of switching transmission modes in IEEE 802.11n MIMO...

Multiplex communications – Communication techniques for information carried in plural... – Adaptive

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07620067

ABSTRACT:
A method and system is provided that selects transmission modes between spatial multiplexing, delay diversity and space-time coding in 802.11n systems. As such, eigen-value computation for mode selection is not required. This provides efficiency, in particular for basic receiver structure where a linear MMSE or ZF MIMO detector is applied. Further, mode selection using a simple metric provides accurate mode selection. In addition by switching between different transmission modes, a link adaptation algorithm according to the present invention provides improved system performance.

REFERENCES:
patent: 7120199 (2006-10-01), Thielecke et al.
patent: 7242724 (2007-07-01), Alexiou et al.
patent: 7263132 (2007-08-01), Horng et al.
patent: 7327795 (2008-02-01), Oprea
patent: 2003/0123598 (2003-07-01), Gollamudi et al.
patent: 2003/0231706 (2003-12-01), Hwang
patent: 2003/0236080 (2003-12-01), Kadous et al.
patent: 2005/0237971 (2005-10-01), Skraparlis
patent: 2006/0114858 (2006-06-01), Walton et al.
patent: 2006/0221920 (2006-10-01), Gopalakrishnan et al.
patent: 2007/0140363 (2007-06-01), Horng et al.
G. Foschini, “Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas,” Bell Labs Tech. J., 1996, pp. 41-59, vol. 1, No. 2.
V. Tarokh, N. Seshadri and A.R. Calderbank, “Space-time codes for high data rate wireless communication: Performance criterion and code construction”, IEEE Trans. On Information Theory, Mar. 1998, pp. 744-765. vol. 44, No. 2.
S.A. Mujtaba, “TGn Sync Proposal Technical Specification,” doc.: IEEE 802.11-04/0889r6, May 2005, pp. 1-131.
L. Zheng and D. Tse, “Diversity and Mulitplexing: A Fundamental Tradeoff in Multiple-Antenna Channels,” IEEE Trans. Info. Theory, May 2003, pp. 1073-1096, vol. 49, No. 2.
Mujtaba, S.A., “TGn Sync Proposal Technical Specification,” a contribution to doc: IEEE 802.11-04889r0, Aug. 2004, pp. 1-138.
Shiu, Da-Shan, Foschini, G.J., Gans, M.J., and Kahn, J.M., “Fading Correlation and its Effect on the Capacity of Multielement Antenna Systems,” IEEE Trans. Communication, pp. 502-513, Mar. 2000, vol. 48, No. 3.
Mujtaba, S.A., “TGn Sync Proposal Technical Specification,” a contribution to IEEE 802.11, 11-04-889r1, Nov. 2004, pp. 1-144.
Holland, G., Vaidya, N., and Bahl, P., “A Rate Adaptive MAC Protocol for Multi-Hop Wireless Networks,” ACM/ IEEE Int. Conf. on Mobile Computing and Networking (Mobicom'01), Rome, Italy, Jul. 2001.
Lin, Z., Malmgren, G., and Torsner, J., “System Performance Analysis of Link Adaptation in HiperLAN Type 2,” Proc. IEEE Vehicular Technology Conference, May 2000, vol. 4, pp. 1719-1725.
U.S. Office Action for U.S. Appl. No. 11/317,826 mailed Dec. 11, 2008.
Mujtaba, S.A., “TGn Sync Proposal Technical Specification”, Jul. 2005, IEEE 802.11 TGn, IEEE 802.11-04/0889r7.
U.S. Office Action for U.S. Appl. No. 11/317,826 (SAM2B.PAU.33) mailed Jun. 15, 2009 by Examiner Ahn, Sung S.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of switching transmission modes in IEEE 802.11n MIMO... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of switching transmission modes in IEEE 802.11n MIMO..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of switching transmission modes in IEEE 802.11n MIMO... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4076590

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.