manchester encoding help

[devil6600]

can baud rate of 921600 (already doubled:460800) be achieved using manchester encoding on 100mhz fm transmitter?
how do i calculate maximum baud rate possible using manchester encoding at 100mhz fm.

 

[E-design]

Diphase or Manchester coding will require the bandwidth to double, so it depends if you have enough bandwidth available. Manchester coding is used on ethernet systems of 10Mbps and higher without problems. At 100Mbs and above more efficient coding, methods are used.