Space-time transmit diversity scheme for time-dispersive...

Pulse or digital communications – Transmitters

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S296000, C375S316000

Reexamination Certificate

active

07471734

ABSTRACT:
This invention extends Alamouti's scheme for wideband TDMA systems; it then works in conjunction with time-domain equalization. In fact, the present invention envisages time-domain DFE or MLSE equalization (which is more robust than linear frequency-domain equalization) via the use of a training mid-amble to separate adjacent sub-blocks; this mid-amble is used in equalizer training and its direct and inter-symbol interference contributions to the received signal, are subtractively eliminated to facilitate the detection process itself. This approach may be applied to all systems in time-dispersive propagation media, where the burst or slot length is short enough that the fading can be considered time-invariant over its duration.

REFERENCES:
patent: 6661856 (2003-12-01), Calderbank et al.
patent: 6775329 (2004-08-01), Alamouti et al.
patent: 6788661 (2004-09-01), Ylitalo et al.
patent: 6804307 (2004-10-01), Popovic
patent: 6834043 (2004-12-01), Vook et al.
patent: 6842494 (2005-01-01), Ionescu
patent: 6891903 (2005-05-01), Jafarkhani et al.
patent: 6959047 (2005-10-01), Al-Dhahir et al.
patent: 7139324 (2006-11-01), Ylitalo et al.
patent: 7154958 (2006-12-01), Dabak et al.
patent: 7190734 (2007-03-01), Giannakis et al.
patent: 7206606 (2007-04-01), Kobayashi et al.
patent: 7227905 (2007-06-01), Viswanathan
patent: 2001/0017903 (2001-08-01), Naguib et al.
patent: 2002/0080894 (2002-06-01), Dabak et al.
patent: 2002/0193146 (2002-12-01), Wallace et al.
Thomas, J. “On the Capacity Achieved by Space-Time Block Codes.” Institute for Systems Research, College Park, MD. May 2, 1999.
Steiner, B. et al. “Optimum and Suboptimum Channel Estimation for the Uplink of CDMA Mobile Radio Systems with Joint Detection.”European Transactions on Telecommunications and Related Technologies, vol. 5, No. 1, Jan.-Feb. 1994, pp. 39-50.
“A Transmit Diversity Scheme for Channels with Intersymbol Interference,” by A. Lindskog and A. Paulraj. Proceeding of the International Conference on Communications, 2000, pp. 307-311.
Siavash Alamouti, “A simple transmit diversity technique for wireless communications,” IEEE Journal on Selected Areas in Communications, Oct. 1998.

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

Space-time transmit diversity scheme for time-dispersive... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Space-time transmit diversity scheme for time-dispersive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Space-time transmit diversity scheme for time-dispersive... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4029930

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