Doppler distribution measurement method in wireless LAN system
AssigneeLG Electronics Inc.
InventorsKilbom Lee, Jiwon Kang, Kitae Kim, Kungmin Park, Heejin Kim
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Abstract
Disclosed is a Doppler distribution measurement method comprising: receiving a plurality of receive signals that arrive via different RE sets in different paths; measuring CFO values of the plurality of receive signals; selecting the two receive signals in which the difference in value between the CFO values are the greatest, from among the plurality of receive signals; and determining a Doppler shift difference between the selected two receive signals a an effective Doppler distribution.
Claims12
A method for measuring Doppler spread by a receiver in a wireless communication system, the method comprising:
- receiving a plurality of received signals that arrive via different paths corresponding to different resource element (RE) sets;
- measuring CFO (Carrier Frequency Offset) values of the plurality of received signals;
- selecting two received signals, which have a greatest difference in the CFO values, from the plurality of received signals;
- and
- determining a Doppler shift difference between the selected two received signals as effective Doppler spread.
A reception module for estimating Doppler in a wireless communication system, the reception module comprising:
- a transmitter;
- a receiver;
- and
- a processor operated by being connected with the transmitter and the receiver,
- wherein the processor controls the receiver to receive a plurality of received signals that arrive via different paths corresponding to different resource element (RE) sets,
- measures CFO (Carrier Frequency Offset) values of the plurality of received signals,
- selects two received signals, which have a greatest difference in the CFO values, from the plurality of received signals, and
- determines a Doppler shift difference between the selected two received signals as effective Doppler spread.
Dependencies are inferred from the claim text.