In a digital transmission, a bit stream m[n] = 10110110 is transmitted over a copper wire with a speed of 1 bit/s. The transmission employs Amplitude Shift Keying (ASK) to modulate the signal. (4 marks) (i) Name and describe the major source of error found in the digital transmission. (ii) What is the method used to remove the error described in part (b)(i)? Describe two properties of the method. (4 marks) (iii) If the carrier signal, c(t), which is described by the following function, is applied to modulate m[n]. Sketch the modulated signal. (5cos8nt c(t) = {5co for a 1 bit for a 0 bit (iv) How can the ASK modulated signal be demodulated?