Techniques for communicating with passive devices using multiplexed waveforms

Abstract

Methods, systems, and devices for wireless communications are described. A first wireless device may generate a multiplexed waveform by multiplexing a first transmission for a passive device (e.g., a radio frequency identifier (RFID) tag) together with a second transmission for a second wireless device. The first wireless device may modulate the first transmission according to a first modulation scheme and may modulate the second transmission according to a second modulation scheme. The first wireless device may provide the second wireless device with information about a set of modulation symbols of the first transmission. The information may include one or more reference signals, an indication of a sequence corresponding to the set of modulation symbols, an indication of a transmit power for one or more of the modulation symbols, or a combination thereof. The second wireless device may use the information to demodulate and decode the multiplexed waveform.

Dependencies are inferred from the claim text.