Mud Pulse Telemetry is encoded data which is transmitted using pressure wave from a downhole tool to an uphole receiver. Mud pulse telemetry is commonly encoded using a technique referred to as M-ary encoding. This paper will describe the encoding and decoding of M-ary data from a physical medium.

M-ary is a data transmission format that take in a fixed size data packet and encodes it for transmission over various physical media. It also handles the conversion from the physical media back into the same fixed size data packet. M-ary does not handle guarantee of data reception, nor does it provide any promises on the accuracy of the received data.

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