Partial duplex frequency domain modulator system and method
AssigneeBroadcom Corporation
InventorScott Powell
Life of this patent
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Abstract
In a multi-carrier transmission scheme (frequency domain multiplexed—FDM), a single high rate data stream is split into multiple lower rate data streams each transmitted over a different carrier (e.g., a tone or bin). The data rate possible from a multiple-carrier transmission scheme is theoretically equivalent to the data rate possible from a single-carrier (including baseband) scheme with the same composite bandwidth. The scheme allows for a communications system that can selectively send each data signal (e.g., audio data, video data, raw data, etc.) partitioned out into full and half duplex sections (e.g., tones). The scheme can have a reduced complexity and cost and use less bandwidth. This is done by being able to selectively split a data signal into both full and half duplex tones.
Claims21
A system comprising:
- a signal splitter that receives a first signal and produces second signals in different frequency ranges from the first signal;
- a duplex determining device that generates third signals comprising flagged second signals that are designated as being transmittable as one of partial duplex and full duplex;
- a combiner that combines the third signals into a fourth signal;
- and
- a transmitter that transmits the fourth signal.
A method comprising:
- (a) receiving a first signal;
- (b) forming second signals from the first signal, each of the second signals being in a different range of frequencies;
- (c) determining whether each of the second signals should be transmittable in partial duplex mode or full duplex mode;
- (d) forming third signals through flagging each of the second signals as being a partial duplex-type signal or a full-duplex type signal based on step (c);
- (e) combining the third signals to form a fourth signal;
- and
- (f) transmitting the fourth signal.
Dependencies are inferred from the claim text.