Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2003-08-29
2009-12-08
Pham, Chi H (Department: 2416)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S210000
Reexamination Certificate
active
07630291
ABSTRACT:
A serial-parallel converter102of a transmitter apparatus receives an input of a signal to be transmitted and serial-parallel-converts this to output m (m≧2) number of intermediate signals. A unitary matrix modulator103modulates the output m number of intermediate signals into a unitary matrix of m rows and m columns whose components other than diagonal components are 0 and outputs the obtained matrix. A splitter111supplies the respective diagonal components of the output matrix to the input channels of an inverse Fourier transform unit112as input signals. The inverse Fourier transform unit112outputs m number of inverse-Fourier-transformed signals obtained by performing inverse Fourier transform of the supplied input signals. A parallel-serial converter113parallel-serial-converts the output m number of inverse-Fourier-transformed signals to output one transmission signal. A transmission unit114transmits the output transmission signal. The difference between the frequency of any two channels of the inverse Fourier transform unit112is equal to or larger than a predetermined coherent bandwidth.
REFERENCES:
patent: 6363121 (2002-03-01), Hochwald et al.
patent: 6510133 (2003-01-01), Uesugi
patent: 6801579 (2004-10-01), Hassibi et al.
patent: 2005/0147182 (2005-07-01), Lee et al.
patent: 2006/0188032 (2006-08-01), Kim et al.
patent: 2006/0232416 (2006-10-01), Bauch
patent: 123596 (2002-09-01), None
European Search Report for European patent application No. 03818547.6-2411/1662684 PCT/JP0311110, dated Apr. 5, 2009.
Xiang, Gen, X. “Precoded and Vector OFDM Robust to Channel Spectral Nulls and With Reduced Cyclic Prefix Length in Single Transmit Antenna Systems.” IEEE Transactions on Communications, Vol. 49, No. 8, Aug. 2001.
Yoshimochi, N. et al. “LDPC coded unitary space-time modulated OFDM system in broadband mobile channel.” Electronics Letters, Vol. 39, No. 13, Jun. 26, 2003.
Ahn Chang-Jun
Fujise Masayuki
Chou Albert T
Howard & Howard Attorneys PLLC
National Institute of Information and Communications Technology
Pham Chi H
LandOfFree
Transmitter apparatus, receiver apparatus, transmitting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmitter apparatus, receiver apparatus, transmitting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmitter apparatus, receiver apparatus, transmitting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4081482