The bits transmitted by four stations A, B, C and D are
multiplexed using Code Division Multiplexing (CDMA). Assume A
transmits a 1 bit, B transmits a 0 bit, C transmits a 1 bit, and D
is silent. Assume the following are the chip sequences of the four
stations, answer below questions: SA = (-1 -1 -1 +1 +1 -1 +1 +1);
SC = (-1 -1 +1 -1 +1 +1 +1 -1) SB = (-1 +1 -1 +1 +1 +1...