Distributing clock associated with a wired communication channel over wireless interfaces by sending a clock correction message to the receiving side

Abstract

A clock extractor extracts clock frequency f, from a wired data connection. A clock error estimator estimates a first clock frequency error between clock frequency fand a clock frequency fassociated with a local clock of the transmitter. A transmitter sends the first clock frequency error, as a message to a receiver. The transmitter uses a wireless transmitter interface, including a modulator and transmitter radio. The wireless transmitter interface is clocked at clock frequency f. The transmitter sends data to the receiver. A wireless receiver interface includes a de-modulator and receiver radio. The wireless receiver interface reconstructs clock frequency f. A clock adder adds the reconstructing clock frequency fto the first clock frequency error, resulting in a synthesized clock frequency f. The receiver clocks a second wired data connection, using the synthesized clock frequency f