Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2005-10-04
2005-10-04
Le, Amanda T. (Department: 2634)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S295000, C375S340000, C370S208000, C370S480000
Reexamination Certificate
active
06952454
ABSTRACT:
Transmitter and receiver units for use in an OFDM communications system and configurable to support multiple types of services. The transmitter unit includes one or more encoders, a symbol mapping element, and a modulator. Each encoder receives and codes a respective channel data stream to generate a corresponding coded data stream. The symbol mapping element receives and maps data from the coded data streams to generate modulation symbol vectors, with each modulation symbol vector including a set of data values used to modulate a set of tones to generate an OFDM symbol. The modulator modulates the modulation symbol vectors to provide a modulated signal suitable for transmission. The data from each coded data stream is mapped to a respective set of one or more “circuits”. Each circuit can be defined to include a number of tones from a number of OFDM symbols, a number of tones from a single OFDM symbol, all tones from one or more OFDM symbols, or some other combination of tones. The circuits can have equal size or different sizes. Different circuits can be used for full rate data (e.g., active speech) and low rate data (e.g., silence periods).
REFERENCES:
patent: 0825732 (1998-02-01), None
patent: 0825741 (1998-02-01), None
patent: 96/09708 (1996-03-01), None
patent: 99/14878 (1999-03-01), None
patent: 01/08426 (2001-02-01), None
Jalali Ahmad
Wallace Mark
Walton Jay R.
Le Amanda T.
Milikovsky Dmitry R.
Minhas Micky
Qualcomm Incorporated
Wadsworth Philip
LandOfFree
Multiplexing of real time services and non-real time... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiplexing of real time services and non-real time..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiplexing of real time services and non-real time... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3440317