In performing synchronization Symbol synchronization should be done before frame synchroniza Frame synchronization should be done before symbol synchroniza Either can be done first They have to be performed simultaneously Solution c. Either can be done first. Symbol synchronization is the process of deriving at the receiver timing signals that indicate where in time the transmitted symbols are located. Once symbol synchronization is achieved, the next higest synchronization level is frame synchronization. Frame synchronization is necessary in system for which the unit of information is not a symbol but rather a sequence of symbols. Existence of frame synchronization automically implies symbol synchronization, but the converse is not true. Thus, one might be tempted to attempt frame synchronization before symbol synchronization is achieved, thereby acheving both at once. .