Patent ID: 11558233

Abstract:
A WLAN baseband chip and an FDMA PPDU generation method are disclosed. The WLAN baseband chip obtains a subcarrier coefficient corresponding to a subcarrier set, m LDR SYNC sequences, and n−m HDR SYNC sequences. The WLAN baseband chip performs duplicating processing on m data streams in n data streams, to obtain m data sequences on which the duplicating processing has been performed and n−m remaining data streams. The WLAN baseband chip obtains m pieces of to-be-modulated data based on the m LDR SYNC sequences and the m data sequences on which the duplicating processing has been performed, and obtains n−m pieces of to-be-modulated data based on the n−m HDR SYNC sequences and the n−m remaining data streams, to obtain n pieces of to-be-modulated data. The WLAN baseband chip performs postprocessing to obtain a frequency-domain symbol sequence, to obtain an FDMA PPDU.