Method and apparatus for ultra high bandwidth acoustic communication and power transfer
Aspects of the subject disclosure may include, for example, receiving, by a receiver through a medium from a transmitter, signals over an acoustic channel, where the receiving over the acoustic channel utilizes a high center frequency and provides for a high data rate, and where the medium is a fluid or a semi-solid medium. The device can receive power from the transmitter over the acoustic channel. Other embodiments are disclosed.
1. A method comprising:
providing a system including a transmitter, a receiver, and a processor, wherein at least one of the transmitter and receiver is moving;
generating, by the processor, Quadrature Amplitude Modulation (QAM) signals encoding data;
transmitting, by transmitter, the QAM signals over an acoustic channel through a medium to the receiver, wherein the transmitting over the acoustic channel utilizes acoustic waves having a center frequency of at least 2 MHz and provides for a data rate above 1 Mbps;
receiving, by the receiver, the transmitted signals over the acoustic channel, wherein the received signals include Doppler distortion caused by relative motion between the transmitter and the receiver; and
processing by the processor, the received signals using a second-order recursive learning algorithm for estimating arrival time to compensate for the Doppler distortion so that the data can be extracted from the received signals.
2. The method of claim 1 , wherein using the second-order recursive learning algorithm for estimating arrival time includes determining a gradient of a squared symbol error with respect to the arrival time.
3. The method of claim 1 , wherein the data rate is at or above 3.6 Mbps, and wherein the QAM signals comprise high definition video.
4. The method of claim 1 , wherein the transmitter and the receiver are separated from each other by at least 1 m, and wherein the data rate is at or above 10 Mbps.
5. The method of claim 1 , wherein the transmitter and the receiver are separated from each other by at least 100 m.
6. The method of claim 1 , wherein the receiver receives power via the acoustic channel.
7. The method of claim 1 , wherein the medium comprises water.
8. The method of claim 1 , wherein the system comprises an in-body sensor for capturing video within a body, wherein the QAM signals comprise the video, wherein the medium comprises tissue of the body, and wherein the in-body sensor receives control signals via the acoustic channel for controlling operation of the in-body sensor.
9. The method of claim 8 , wherein the in-body sensor receives power via the acoustic channel.
10. The method of claim 1 , wherein the system comprises an in-body sensor, wherein the QAM signals comprise data transmitted between the in-body sensor and a transmitter or receiver external to a body, and wherein the medium comprises tissue of the body.
11. The method of claim 1 , wherein the receiver applies a non-uniform sampling to the QAM signals, and wherein the non-uniform sampling is adjusted dynamically.