Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2007-07-31
2007-07-31
Corrielus, Jean B. (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S285000, C375S346000
Reexamination Certificate
active
10321699
ABSTRACT:
A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.
REFERENCES:
patent: 5949821 (1999-09-01), Emami et al.
patent: 6330290 (2001-12-01), Glas
patent: 6363102 (2002-03-01), Ling et al.
patent: 6519300 (2003-02-01), Ramesh
patent: 6647074 (2003-11-01), Citta et al.
patent: 7020226 (2006-03-01), Kirkland
patent: 7076008 (2006-07-01), Jeong
patent: 2002/0045433 (2002-04-01), Vihriala
patent: 2002/0101840 (2002-08-01), Davidsson et al.
patent: 2003/0007574 (2003-01-01), Li et al.
patent: 2003/0016773 (2003-01-01), Atungsiri et al.
patent: 2003/0095589 (2003-05-01), Jeong
patent: 2003/0123534 (2003-07-01), Tsui et al.
patent: 2004/0203472 (2004-10-01), Chien
patent: 2006/0182063 (2006-08-01), Ma et al.
patent: 0540232 (1992-10-01), None
Schuchert, Andreas; Makowitz, Rainer; Front End Architectures for Multistandard Digital TV Receivers; IEEE Transactions on Consumer Electronics, vol. 46, No. 3, Aug. 2000, pp. 422-427.
Kirkland, W.R.; Teo, K.H.; I/Q Distortion Correction for an OFDM Direct Conversion Receiver.
Schuchert, Andreas; Hasholzner, Ralph; Buchholz; Frequency Domain Equlization of IQ Imbalance in OFDM Receivers; IEEE, 2001, pp. 28-29.
Robertston, Patrick; Wörz, Thomas; Bandwidth-Efficient Turbo Trellis-Coded Modulation Using Punctured Component Codes; IEEE Journal on Selected Areas in Communications, vol. 16, No. 2, Feb. 1998, pp. 206-218.
Khandani, Amir K.; Kabal, Peter; Shaping Multidimensional Signal Spaces—Part I: Optimum Shaping, Shell Mapping; IEEE Transactions on Information Theory, vol. 39, No. 6, Nov. 1993, pp. 1799-1808.
Khandani, Amir K.; Kabel, Peter; Shaping Multidimensional Signal Spaces—Part II: Shell-Addressed Constellations; IEEE Transactions on Information Theory, vol. 39, No. 6, Nov. 1993, pp. 1809-1819.
Le Goff, Stéphane; Glavieux, Alain; Berrou, Claude; Turbo-Codes and High Spectral Efficiency Modulation; IEEE, 1994, pp. 645-649.
Wachsmann, Udo; Fischer, Robert F.H.; Huber, Johannes B.; Multilevel Codes: Theoretical Concepts and Practical Design Rules; IEEE Transactions On Information Theory, vol. 45, No. 5, Jul. 1999; pp. 1361-1391.
Papke, L., Fazel, K.; Combined Multilevel Turbo-Code With MR-Modulation; IEEE, 1995; pp. 668-672.
Khandani, A.K.; Kabel, P.; Shaping of Multi-Dimensional Signal Consellations Using a Lookup Table; IEEE, 1992, pp. 927-931.
Khandani, A.K.; An Efficient Addressing Scheme for Shaping of Multi-Dimensional Signal Constellations Using a Lookup Table; IEEE, 1994, pp. 354-357.
Kozintesev, Igor; Ramchandran, Kannan; Robust Image Transmission Over Energy-Constrained Time-Varying Channels Using Multiresolution Joint Source-Channel Coding; IEEE, 1998, pp. 1012-1026.
Boudreau Daniel
Dubuc Christian
Kirkland William R.
Corrielus Jean B.
Nortel Networks Limited
LandOfFree
System and method for I/Q imbalance compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for I/Q imbalance compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for I/Q imbalance compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3784653