System and method for multi-frequency downhole bus communication

A bottom hole assembly, comprising:

• a single wire bus;
• at least one legacy sensor coupled to the single wire bus;
• at least one communication sensor coupled to the single wire bus, wherein the at least one communication sensor is configured to inject a communication signal alternating between high frequency synchronization pulses and high frequency data signals onto the single wire bus, and a first communication frequency of the communication signal is at least an order of magnitude greater than a second communication frequency of a legacy signal of the at least one legacy sensor;
• a first high frequency pass filter coupled between the at least one communication sensor and the single wire bus, wherein the first high frequency pass filter is configured to pass the communication signal from the at least one communication sensor to the single wire bus;
• and
• a first high frequency blocking filter coupled between the at least one legacy sensor and the single wire bus, wherein the high frequency blocking filter is configured to block the communication signal from the at least one communication sensor from disturbing the legacy signal of the at least one legacy sensor.