Q2. Among multiple-user channel random access methods, code division multiple access (CDMA) is the most popular one. (i) Provide three advantages of CDMA (code division multiple access) over other multiple access channel sharing systems (e.g. TDMA, FDMA). -(ii) With the help of an example, explain how CDMA is used to multiplex three binary signals, each with 2 bits only. In your example use different spreading (chipping) codes of 8 bits each. Explain how you select your spreading codes. (iii) Use a CDMA receiver to recover (at least one of) the messages and demonstrate how the CDMA receiver can recover the data even if two of the chip segments are received in error..