Full division duplex system and a leakage cancellation method
First Claim
1. A full division duplex system, comprising:
- a transmitter, up converting an outbound baseband signal by an oscillation signal to generate an outbound RF signal of a first band;
an auxiliary circuit, generating a blocker replica associated with leakages from the outbound RF signal by the oscillation signal of the transmitter, wherein the auxiliary circuit is configured to receive the outbound baseband signal and perform a comparison according to the outbound baseband signal to generate a set of error parameters for compensating the outbound baseband signal; and
a receiver, receiving an inbound RF signal of a second band and subtracting the blocker replica from the received inbound RF signal, wherein the receiver uses a different oscillation signal from the oscillation signal used by the transmitter and auxiliary circuit.
1 Assignment
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Accused Products
Abstract
An exemplary embodiment of a full division duplex system comprises a receiver, a transmitter and an auxiliary circuit. The receiver receives an inbound RF signal of a first band to generate an inbound baseband signal, and the transmitter up converts an outbound baseband signal by an oscillation signal to generate an outbound RF signal of a second band for transmission. The auxiliary circuit calculates leakages from the outbound RF signal to generate a blocker replica, in which a LNA is coupled to a non-conductive coupling path extended from the input of receiver to collect leakages from the outbound RF signal to produce an induction signal. The induction signal is down converted to perform an adjustment, and thereafter up converted again to generate the blocker replica. In this way, the inbound baseband signal is generated from a subtraction of the inbound RF signal and the blocker replica.
33 Citations
26 Claims
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1. A full division duplex system, comprising:
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a transmitter, up converting an outbound baseband signal by an oscillation signal to generate an outbound RF signal of a first band; an auxiliary circuit, generating a blocker replica associated with leakages from the outbound RF signal by the oscillation signal of the transmitter, wherein the auxiliary circuit is configured to receive the outbound baseband signal and perform a comparison according to the outbound baseband signal to generate a set of error parameters for compensating the outbound baseband signal; and a receiver, receiving an inbound RF signal of a second band and subtracting the blocker replica from the received inbound RF signal, wherein the receiver uses a different oscillation signal from the oscillation signal used by the transmitter and auxiliary circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A leakage cancellation method for a full division duplex system in which a transmitter and a receiver are simultaneously enabled, comprising:
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up converting an outbound baseband signal by an oscillation signal of the transmitter to generate an outbound RF signal of a first band; generating a blocker replica associated with leakages from the outbound RF signal by the oscillation signal, wherein generating the block replica comprises receiving the outbound baseband signal and performing a comparison according to the outbound baseband signal to generate a set of error parameters for compensating the outbound baseband signal; receiving an inbound RF signal of a second band by the receiver; and subtracting the blocker replica from the received inbound RF signal, wherein the receiver uses a second oscillation signal that is different from the oscillation signal of the transmitter. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A full division duplex system, comprising:
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a receiver, receiving an inbound RF signal of a first band to generate an inbound baseband signal; a transmitter, up converting an outbound baseband signal by an oscillation signal to generate an outbound RF signal of a second band; and an auxiliary circuit, having a first signal path from the transmitter which is arranged to receive the oscillation signal of the transmitter and a second signal path from the receiver which is arranged to obtain information associated with leakages from the outbound RF signal, and generating a blocker replica according to the oscillation signal and the obtained information, wherein the auxiliary circuit is configured to receive the outbound baseband signal and perform a comparison according to the outbound baseband signal to generate a set of error parameters for compensating the outbound baseband signal; wherein the receiver is arranged to subtract the blocker replica from the received inbound RF signal, wherein the receiver uses a different oscillation signal from the oscillation signal used by the transmitter and auxiliary circuit. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A leakage cancellation method for a full division duplex system in which a transmitter and a receiver are simultaneously enabled, comprising:
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receiving an oscillation signal of the transmitter by a first signal path from the transmitter; obtaining information associated with leakages from an outbound RF signal of a first band generated by the transmitter by a second signal path from the receiver; generating a blocker replica according to the oscillation signal and the obtained information, wherein generating the block replica comprises receiving an outbound baseband signal and performing a comparison according to the outbound baseband signal to generate a set of error parameters for compensating the outbound baseband signal; and subtracting the blocker replica from an inbound RF signal of a second band received by the receiver, wherein the receiver uses a second oscillation signal that is different than the oscillation signal of the transmitter. - View Dependent Claims (23, 24, 25, 26)
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Specification