Systems and methods for implementing receiver transparent Q-mode

摘要

In a receiver transparent Q-mode, i.e., a Q-mode that is only implemented by a transmitter, the receiver is unaware of the Q-mode state of the transmitter. In this type of Q-mode configuration, the transmitter could enter and exit Q-mode as desired while the receiver, could, for example, continue to function as if operating normally, such as in “showtime.” Through this approach, it is not necessary for the receiver to detect the transmitter's entry and exit of Q-mode.

主权项

1. A method for a multicarrier transmitter, comprising a plurality of carriers, to enter a Q-mode, the method comprising:
receiving a plurality of bits; scrambling a plurality of words using an XOR scrambler, wherein each word comprises one or more bits of the plurality of bits; mapping all or part of each scrambled word to a QAM constellation to generate a plurality of QAM constellation points; modulating each carrier of the plurality of carriers of a Q-mode symbol using one of the plurality of QAM constellation points; transmitting the Q-mode symbol; and entering the Q-mode, wherein the entry of the Q-mode is independent of an operational state of a receiver.