Passive intermodulation PIM elimination method, apparatus, and base station
AssigneeHuawei Technologies Co., Ltd.
InventorsYong Jiang, Jia Lv, Yuxiang Xiao
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Abstract
A passive intermodulation elimination method, an apparatus, and a base station are disclosed. The method includes: receiving, by a network device, N pieces of backhauled information, where one piece of the backhauled information includes initial phase information of each carrier on one transmit channel, and N is an integer greater than or equal to 1; and eliminating, by the network device, a PIM of a received signal on a receive channel on the network device based on the N pieces of backhauled information.
Claims13
A method of passive intermodulation (PIM) elimination, comprising:
- obtaining, by a network device, N pieces of backhauled information from a plurality of radio remote units (RRUs),
- wherein one piece of the N pieces of backhauled information comprises initial phase information of each carrier on one transmit channel,
- wherein at least one carrier is on the one transmit channel,
- wherein the one piece of the backhauled information is received by the network device on a receive channel of the network device,
- wherein the initial phase information of each carrier on the one transmit channel is determined when a numerically controlled oscillator (NCO) generates the at least one carrier on the one transmit channel, and
- wherein N is an integer greater than 1;
- and
- eliminating, by the network device, a PIM of a received signal on the receive channel on the network device based on the initial phase information of each carrier on the one transmit channel and a baseband signal.
A network device, comprising:
- a receiver, configured to receive N pieces of backhauled information from a plurality of radio remote units (RRUs),
- wherein one piece of the N pieces of backhauled information comprises initial phase information of each carrier on one transmit channel,
- wherein at least one carrier is on the one transmit channel,
- wherein the one piece of the backhauled information is received on a receive channel of the network device,
- wherein the initial phase information of each carrier on the one transmit channel is determined when a numerically controlled oscillator (NCO) generates the at least one carrier on the one transmit channel, and
- wherein N is an integer greater than 1;
- and
- a processor, configured to eliminate a passive intermodulation (PIM) of a received signal on the receive channel on the network device based on the initial phase information of each carrier on the one transmit channel and a baseband signal.
Dependencies are inferred from the claim text.