Patent ID: 6847655

Claim:
A method of radio transmitting high order synchronous digital signals, said method comprising the steps of: receiving the digital signals in the form of standard frames comprising header bytes, the header bytes in turn comprising Regenerator Section OverHead bytes and Multiplex Section OverHead bytes; subdividing each of the received standard frames into a number of sub-frames; and transmitting said sub-frames towards a corresponding receiver apparatus, wherein the method comprises the additional steps of: terminating the Regenerator Section OverHead bytes of the received standard frames and performing a computation of the parity byte; providing a Radio Frame Complementary OverHead; transmitting the terminated Regenerator Section OverHead bytes and the Radio Frame Complementary OverHead interleaved by columns in a 1+1 protected configuration; and wherein said step of subdividing the received standard frame into a number of sub-frames comprises the step of subdividing by columns the standard frame into two sub-frames for transmitting them over working channels by using only two RF carriers without performing any multiplexing/demultiplexing operation.