A New Transmission Scheme for Additional Bits with Rotated LDPC Coded Signals

In this work, a new coding scheme is proposed for transmitting additional bits along with low-density parity-check (LDPC) coded data at no expense of bandwidth or transmission power. At the transmitter, the LDPC coded bits are first flipped in a random-like way specified by the additional bits and then mapped into a sequence of two-dimensional signals. The modulated sequence is then partitioned in...