Suppose that a three-station system uses the following three spreading sequences to produce three channels: {(-1, 1, 1,

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Suppose That A Three Station System Uses The Following Three Spreading Sequences To Produce Three Channels 1 1 1 1 (121.93 KiB) Viewed 50 times

Suppose that a three-station system uses the following three spreading sequences to produce three channels: {(-1, 1, 1, 1), (-1, -1, 1, -1), and (-1, 1, 1, -1)}. To transmit an information bit, a station converts a binary 0 to a -1 symbol and a binary 1 to a +1 symbol. The station then transmits the symbol times its spreading sequence. Now suppose that Stations 1 and 2 transmit the following respective binary information sequences: 11 and 00. 1. What symbols will be converted into after the spreading is applied. (4 pts) 2. The sum of the above signals. (3 pts) 3. How the information symbols are recovered at Station 1. (6 pts) 4. Redo (3), assuming Stations 1 and 3 are now transmitting and Station 2 is silent. Assume Station 3 is transmitting 10. Is the information transmitted detected correctly by Station 1? If no, explain why. (7 pts)