Method and system for demodulating data signals. According to an embodiment, the present invention provides a method for demodulating data signals. The method includes a step for receiving modulated data over a medium. The modulated data represents a plurality of bits, which includes at least a first bit. For example, the first bit is modulated by a number of modulation processes using a sequence of modulation symbols, and each of the sequence of modulation symbols is selected from a first plurality of modulation symbols. The method also includes a step for processing information associated with the first plurality of modulation symbols and the number of modulation processes. Also, the method includes a step for determining a plurality of sequences of modulation symbols based on at least information associated with the first plurality of modulation symbols and the number of modulation processes.