System and method for in-phase/quadrature multiplexing
AssigneeSamsung Electronics Co., Ltd.
InventorsXiaochen Li, Chiu Ngo
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Abstract
Systems and methods for multiplexing signals are disclosed. In one embodiment, the method comprises receiving a first signal having at least a real component, receiving a second signal having at least a real component, generating an in-phase signal based, at least in part, on the first signal, the in-phase signal being real in a first domain, generating a quadrature signal based, at least in part, on the second signal, the quadrature signal being imaginary in the first domain, adding the in-phase signal and the quadrature signal to generate a multiplexed signal, and transmitting the multiplexed signal.
Claims35
A method of multiplexing signals, the method comprising:
- receiving a pulse-amplitude modulated (PAM) orthogonal frequency-division multiplexing (OFDM) signal, the OFDM signal being real in the frequency domain;
- receiving a quadrature-amplitude modulated (QAM) cyclic-prefix single-carrier (CP-SC) signal, the CP-SC signal being complex in the time domain;
- inverse transforming the OFDM signal so as to generate an in-phase signal, the in-phase signal being complex in the time domain and real in the frequency domain;
- concatenating the complex-even and complex-odd portions of the CP-SC signal so as to generate a quadrature signal, the quadrature signal being complex in the time domain and imaginary in the frequency domain;
- adding the in-phase signal and the quadrature signal so as to generate a multiplexed signal;
- and
- transmitting the multiplexed signal.
A method of multiplexing signals, the method comprising:
- receiving a first signal having at least a real component;
- receiving a second signal having at least a real component;
- generating an in-phase signal based, at least in part, on the first signal, the in-phase signal being real in a first domain;
- generating a quadrature signal based, at least in part, on the second signal, the quadrature signal being imaginary in the first domain;
- adding the in-phase signal and the quadrature signal to generate a multiplexed signal;
- and
- transmitting the multiplexed signal.
A method of demultiplexing signals, the method comprising:
- receiving a multiplexed signal, the multiplexed signal comprising an in-phase signal and a quadrature signal, the in-phase signal being real in a first domain and the quadrature signal being imaginary in the first domain;
- determining a first signal based on the in-phase signal;
- and
- determining a second signal based on the quadrature signal.
A system for multiplexing signals, the system comprising:
- a receiver configured to receive a first signal having at least a real component and a second signal having at least a real component;
- an in-phase generator configured to generate an in-phase signal based, at least in part, on the first signal, the in-phase signal being real in a first domain;
- a quadrature generator configured to generate a quadrature signal based, at least in part, on the second signal, the quadrature signal being imaginary in the first domain;
- an adder configured to add the in-phase an quadrature signal to generate a multiplexed signal;
- and
- a transmitter configured to transmit the multiplexed signal.
A system for demultiplexing signals, the system comprising:
- a receiver configured to receive a multiplexed signal, the multiplexed signal comprising an in-phase signal and a quadrature signal, the in-phase signal being real in a first domain and the quadrature signal being imaginary in the first domain;
- an in-phase demodulator configured to determine a first signal based on the in-phase signal;
- and
- a quadrature demodulator configured to determine a second signal based on the quadrature signal.
A system for multiplexing signals, the system comprising:
- means for receiving a first signal having at least a real component;
- means for receiving a second signal having at least a real component;
- means for generating an in-phase signal based, at least in part, on the first signal, the in-phase signal being real in a first domain;
- means for generating a quadrature signal based, at least in part, on the second signal, the quadrature signal being imaginary in the first domain;
- means for adding the in-phase signal and the quadrature signal to generate a multiplexed signal;
- and
- means for transmitting the multiplexed signal.
A system for demultiplexing signals, the system comprising:
- means for receiving a multiplexed signal, the multiplexed signal comprising an in-phase signal and a quadrature signal, the in-phase signal being real in a first domain and the quadrature signal being imaginary in the first domain;
- means for determining a first signal based on the in-phase signal;
- and
- means for determining a second signal based on the quadrature signal.
A computer-readable storage medium having instructions encoded thereon which, when executed by one or more processors, performs a method of multiplexing signals, the method comprising:
- receiving a first signal having at least a real component;
- receiving a second signal having at least a real component;
- generating an in-phase signal based, at least in part, on the first signal, the in-phase signal being real in a first domain;
- generating a quadrature signal based, at least in part, on the second signal, the quadrature signal being imaginary in the first domain;
- adding the in-phase signal and the quadrature signal to generate a multiplexed signal;
- and
- transmitting the multiplexed signal.
A computer-readable storage medium having instructions encoded thereon which, when executed by one or more processors, performs a method of demultiplexing signals, the method comprising:
- receiving a multiplexed signal, the multiplexed signal comprising an in-phase signal and a quadrature signal, the in-phase signal being real in a first domain and the quadrature signal being imaginary in the first domain;
- determining a first signal based on the in-phase signal;
- and
- determining a second signal based on the quadrature signal.
Dependencies are inferred from the claim text.