METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210297220A1

    公开(公告)日:2021-09-23

    申请号:US17343247

    申请日:2021-06-09

    Abstract: Disclosed herein are a method and apparatus for performing, by UE, decoding in a wireless communication system. According to the present invention, there may be a method and an apparatus for decoding data in which a demodulation reference signal (DMRS) configured by a base station according to a specific pattern is received from the base station through a DMRS symbol, the demodulation reference signal is transmitted on a specific antenna port and located on the same one or two time-axis symbols as at least one other demodulation reference signal transmitted on another antenna port, the specific pattern is determined according to characteristics of a frequency band in which the demodulation reference signal is transmitted, the demodulation reference signal is mapped to the one or two time-axis symbols using at least one of a first code division multiplexing (CDM) on a frequency axis or a second CDM on a time axis, and the data are decoded using the demodulation reference signal.

    METHOD AND DEVICE FOR TRANSMITTING OFDM SIGNAL, AND METHOD AND DEVICE FOR RECEIVING OFDM SIGNAL

    公开(公告)号:US20210219270A1

    公开(公告)日:2021-07-15

    申请号:US17214137

    申请日:2021-03-26

    Abstract: A method of transmitting, by a transmitting device, an orthogonal frequency division multiplexing (OFDM) signal in a wireless communication system, the method including: generating, by a digital module of the transmitting device, a frequency-shifted OFDM baseband signal by performing frequency up-shift of a first signal by a difference between a carrier frequency f0 and a first frequency fbase, wherein the first frequency fbase is, among frequencies corresponding to integer multiples of 128Δf, closest to the carrier frequency f0, and wherein Δf is an OFDM subcarrier spacing; up-converting, by an analog oscillator of the transmitting device, the frequency-shifted OFDM baseband signal by the first frequency fbase to generate an OFDM symbol signal at the carrier frequency f0; and transmitting the OFDM symbol signal at the carrier frequency f0.

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