1. A method for processing a received data signal, the method comprising: receiving a data signal by using a Voice services over Adaptive Multi-user channels on One Slot (VAMOS) receiver, the data signal comprising two training sequences; performing a first evaluation of the data signal based on a first training sequence of the two training sequences; performing a second evaluation of the data signal based on a second training sequence of the two training sequences; and processing the data signal based on a result of the first and second evaluations; wherein processing the data signal comprises burst synchronization.