please help

4W N unrunner The analog signal used for digital data transmission is given above. Answer the following questions regarding for this signal for that each cell belongs one signal element. a. Give information about the signal encoding techniques used in this transmission and write down the signal formulas for the signal. (15 p) b. By defining value for each signal element, find out the received data. (10 p) 4W N unrunner The analog signal used for digital data transmission is given above. Answer the following questions regarding for this signal for that each cell belongs one signal element. a. Give information about the signal encoding techniques used in this transmission and write down the signal formulas for the signal. (15 p) b. By defining value for each signal element, find out the received data. (10 p)