in a communication system comprising a transmitter and a receiver the receiver is synchronized with the transmitter and transmitted by a transmitter and received by the receiver of the signal modulation type is detected. the first part of the received signal with the one or more signals representing modulation type used by the communication system to perform correlation to detect the type of modulation used. establishing synchronization between transmitter and receiver. the first part and each signal in one or more different signals representing various modulation types used in the communication system to be related in order to detect the type of modulation used. Alternatively in order to detect the modulation type used by the first portion of the received signal is de-rotated by different amounts so as to produce multiple signal de-rotated and representing modulation used by communication system of the signal correlation. if the correlation does not determine the modulation type or selecting a predetermined modulation type or in a later stage according to for example comparison or balanced result of the signal quality decision of modulation type.

In a communication system including a transmitter and a receiver the receiver is synchronized with the transmitter and a modulation type in a signal transmitted by the transmitter and received by the receiver is detected. A first portion of the received signal is correlated with one or more signals representing modulation types used by the communication system to detect the type of modulation being used. Synchronization is established between the transmitter and the receiver. The first portion may be correlated with each of one or more different signals representing various modulation types used in the communication system to detect the type of modulation used. Alternately the first portion of the received signal may be derotated by different amounts to produce a plurality of derotated signals that are correlated with the signal representing modulation used by the communication system in order to detect the type of modulation used. If the correlation does not result in a determination of the modulation type either a predetermined modulation type is selected or the decision of modulations type is made at a later stage based e.g. on a comparison of signal qualities or equalization results.

In a communication system including a transmitter and a receiver the receiver is synchronized with the transmitter and a modulation type in a signal transmitted by the transmitter and received by the receiver is detected. A first portion of the received signal is correlated with one or more signals representing modulation types used by the communication system to detect the type of modulation being used. Synchronization is established between the transmitter and the receiver. The first portion may be correlated with each of one or more different signals representing various modulation types used in the communication system to detect the type of modulation used. Alternately the first portion of the received signal may be derotated by different amounts to produce a plurality of derotated signals that are correlated with the signal representing modulation used by the communication system in order to detect the type of modulation used. If the correlation does not result in a determination of the modulation type either a predetermined modulation type is selected or the decision of modulations type is made at a later stage based e.g. on a comparison of signal qualities or equalization results.