Abstract: A dual chirp modulation technique is presented for use in telecommunications. The technique includes: generating a first chirp signal ramping at a first rate; generating a second chirp signal ramping at a second rate which differs from the first rate; combining the first chirp signal with the second chirp signal to form a dual chirped signal; and transmitting, the dual chirped signal from a transmitter to a receiver. At least one first chirp signal, the second chirp signal or the dual chirped signal is preferably modulated. At the receiver, the dual chirped signal is correlated with a local chirp signal to help reject out-of-band interferers.

Abstract: A low-power standard-compliant NB-IoT wake-up receiver (WRX) is presented. The WRX is designed as a companion radio to a full NB-IoT receiver, only operating during discontinuous RX modes (DRX and eDRX), which allows the full high-power radio to turn off while the wake-up receiver efficiently receives NB-IoTWake-Up Signals (WUS). The fabricated receiver achieves 2.1 mW power at ?109 dBm sensitivity with 180 kHz bandwidth over the 750-960 MHz bands. The WRX is fabricated in 28 nm CMOS and consumes 5× less power than the best previously published traditional NB-IoT receivers. This disclosure is the first designed dedicated wake-up receiver for the NB-IoT protocol and demonstrates the benefits of utilizing a WRX to reduce power consumption of NB-IoT radios.

Abstract: In some embodiments, an apparatus includes a power source, a communication bus, a first electrical component connected to the power source and the communication bus, and a second electrical component connected to the communication bus. In such embodiments, the second electrical component can be to be powered by the communication bus such that performance of the communication bus does not fall below a specified performance for the communication bus.

Abstract: In some embodiments, an apparatus includes a power source, a communication bus, a first electrical component connected to the power source and the communication bus, and a second electrical component connected to the communication bus. In such embodiments, the second electrical component can be to be powered by the communication bus such that performance of the communication bus does not fall below a specified performance for the communication bus.