Analog baseband interface for communication systems
AssigneeQUALCOMM Incorporated
InventorJustin Hwang
Life of this patent
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Abstract
A communication system interface between a baseband unit and a radio frequency (RF) unit is configured to advantageously use a common set of lines to carry both transmit and receive baseband analog signals between the baseband and RF unit, thereby enabling a relatively lower signal count and permitting loopback testing of elements within the baseband and the RF units.
Claims13
A wireless communication system comprising:
- a baseband unit including a plurality of baseband sub-units, each baseband sub-unit including a digital to analog converter (DAC) and an analog to digital converter (ADC);
- an RF unit including a plurality of RF sub-units, each RF sub-unit including a transmitter and a receiver;
- and
- a plurality of sets of inter-unit lines, each set of inter-unit lines connecting a baseband sub-unit and a corresponding RF sub-unit,
- wherein each baseband sub-unit and its corresponding RF sub-unit form a processing section, and
- wherein each set of inter-unit lines allows a DAC and a transmitter of one processing section to communicate, and allows a receiver and an ADC of another processing section to communicate.
A method of communicating in a wireless system including a baseband unit and an RF unit, the baseband unit including a plurality of baseband sub-units, each having a digital to analog converter (DAC) and an analog to digital converter (ADC), the RF unit including a plurality of RF sub-units, each having a transmitter and a receiver, wherein each baseband sub-unit and a corresponding RF sub-unit form a processing section for providing baseband reception and transmission as well as RF reception and transmission, the method comprising:
- communicating from a first DAC of a first baseband sub-unit of a first processing section to a first transmitter of a first RF sub-unit of the first processing section on a first set of inter-unit lines;
- and
- communicating from a first receiver of a second RF sub-unit of a second processing section to a first ADC of a second baseband sub-unit of the second processing section on the first set of inter-unit lines.
A method of communicating in a wireless system including a baseband unit and an RF unit, the baseband unit including a plurality of baseband sub-units, each having a digital to analog converter (DAC) and an analog to digital converter (ADC), the RF unit including a plurality of RF sub-units, each having a transmitter and a receiver, wherein each baseband sub-unit and a corresponding RF sub-unit form a processing section for providing baseband reception and transmission as well as RF reception and transmission, the method comprising:
- communicating from a first DAC of a first baseband sub-unit of a first processing section to a first transmitter of a first RF unit of the first processing section on a first set of inter-unit lines connecting the first baseband sub-unit and the first RF sub-unit of the first processing section;
- and
- communicating from a first receiver of the first RF sub-unit of the first processing section to a first ADC of the first baseband sub-unit of the first processing section on a second set of inter-unit lines connecting a second baseband sub-unit and a second RF sub-unit of a second processing section.
Dependencies are inferred from the claim text.