18764008. LONG TRAINING FIELD (LTF) IN DISTRIBUTED TRANSMISSION (QUALCOMM Incorporated)
LONG TRAINING FIELD (LTF) IN DISTRIBUTED TRANSMISSION
Organization Name
Inventor(s)
Youhan Kim of Saratoga CA (US)
LONG TRAINING FIELD (LTF) IN DISTRIBUTED TRANSMISSION
This abstract first appeared for US patent application 18764008 titled 'LONG TRAINING FIELD (LTF) IN DISTRIBUTED TRANSMISSION
Original Abstract Submitted
This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to LTF designs that support distributed transmissions. In some aspects, a transmitting device may obtain a sequence of values representing an LTF of a PPDU and may map the sequence of values to a number (N) of noncontiguous subcarrier indices of a plurality of subcarrier indices spanning a wireless channel according to a distributed tone plan. In some implementations, the transmitting device may modulate the sequence of values on N tones, representing a logical RU, and map the N tones to the N noncontiguous subcarrier indices, respectively. In some other implementations, the sequence of values may be obtained based on relative locations of the N noncontiguous subcarrier indices in the wireless channel.