QR decomposition apparatus and method for MIMO system

Details QR decomposition apparatus and method for MIMO system QR decomposition apparatus and method for MIMO system

2008-06-16

2011-11-29

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Receivers

C375S347000

Reexamination Certificate

active

08068560

ABSTRACT:
Provided is a QR decomposition apparatus and method that can reduce the number of computers by sharing hardware in an MIMO system employing OFDM technology to simplify a structure of hardware. The QR decomposition apparatus includes a norm multiplier for calculating a norm; a Q column multiplier for calculating a column value of a unitary Q matrix to thereby produce a Q matrix vector; a first storage for storing the Q matrix vector calculated in the Q column multiplier; an R row multiplier for calculating a value of an upper triangular R matrix by multiplying the Q matrix vector by a reception signal vector; and a Q update multiplier for receiving the reception signal vector and an output of the R row multiplier, calculating an Q update value through an accumulation operation, and providing the Q update value to the Q column multiplier to calculate a next Q matrix vector.

REFERENCES:
patent: 7363200 (2008-04-01), Lu
patent: 7489746 (2009-02-01), Awater et al.
patent: 7782971 (2010-08-01), Burg et al.
patent: 7804801 (2010-09-01), Lee et al.
patent: 7912140 (2011-03-01), Anholt et al.
patent: 7936838 (2011-05-01), Ito et al.
patent: 2006/0224655 (2006-10-01), Shirai et al.
patent: 2007/0067378 (2007-03-01), Barford
patent: 2007/0155433 (2007-07-01), Ito et al.
patent: 2007/0230628 (2007-10-01), You et al.
patent: 2008/0225976 (2008-09-01), Prasad et al.
patent: 2009/0101910 (2009-04-01), Zhang et al.
patent: 2009/0154586 (2009-06-01), Lee et al.
patent: 2010/0042666 (2010-02-01), Park et al.
patent: 2010/0150274 (2010-06-01), Dai et al.
patent: 10-2006-0012825 (2006-02-01), None
patent: 10-2006-0047844 (2006-05-01), None
patent: 10-2007-0011304 (2007-01-01), None
patent: 10-2007-0118835 (2007-12-01), None
Kimura et al., Multiple-QR-Decomposition Assisted Group Detection For Reduced-Complexity-And-Latency MIMO-OFDM Receivers, 2005, Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on, pp. 1-5.
Singh et al., A Fixed Point Implementation for QR Decomposition,2006, Design, Application, Integration and Software, 2006 IEEE Dallas/CAS Workshop on, pp. 75-78.
Bischof et al., On Updating Subspaces, 1992, Signal Processing, IEEE Transactions on, vol. 40, Issue 1, pp. 96-105.
Kim et al., Efficient Successive Interference Cancellation Algorithms for the DSTTD System, 2005, Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005, IEEE 16th International Symposium on, vol. 1, pp. 62-66.
Kim et al., Transmit Antenna Selection for Hybrid Space-Time Block Code With Decision-Feedback Detector, 2007, Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th, pp. 768-772.
Dirk Wubben et al., “MMSE Extension of V-BLAST based on Sorted QR Decomposition”, 2003 IEEE VTC, Oct. 2003, pp. 508-512, vol. 1.

Affiliated with

Also associated with

Rating

QR decomposition apparatus and method for MIMO system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with QR decomposition apparatus and method for MIMO system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QR decomposition apparatus and method for MIMO system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4283337