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    • 5. 发明公开
    • SYMBOL TRANSMISSION METHOD AND COMMUNICATION APPARATUS
    • EP4329361A1
    • 2024-02-28
    • EP22824013.1
    • 2022-05-24
    • Huawei Technologies Co., Ltd.
    • YANG, RuiQIN, ChengWANG, SihaiLI, Xueru
    • H04W24/08H04L5/00
    • This application provides a symbol transmission method and a communications apparatus. The method may include: A transmit-side device determines frequency-domain positions of reference signals that are used for phase noise estimation and that are on a plurality of resource blocks, where there are a plurality of reference signals on at least one resource block in the plurality of resource blocks, the reference signals occupy consecutive frequency-domain resources on the at least one resource block, for example, occupy a plurality of consecutive subcarriers; the transmit-side device maps, based on the frequency-domain positions of the reference signals on the plurality of resource blocks, the reference signals to one or more symbols, and sends, to a receive-side device, the one or more symbols to which the reference signals are mapped; and the receive-side device performs phase noise estimation based on the reference signals. According to this application, the reference signals can be distributed in a relatively centralized manner in frequency domain, so that accuracy of inter-carrier interference estimation and phase noise error compensation performance are improved, thereby improving demodulation performance of a receiver.