Consider a CDMA system in which users A and B have the Walsh codes (-1 1-1 1-1 1-1 1) and (-1-1 1 1-1-1 1 1), respectively. For the following scenarios, show the details of how the receiver decodes As transmission.

a) If A transmits a data bit 0 and B does not transmit.

b) If A transmits a data bit 0 and B transmits a data bit 1. Assume the received power from both A and B is the same

c) If A transmits a data bit 0 and B transmits a data bit 0. Assume the received power from both A and B is the same

d) If A transmits a data bit 1 and B transmits a data bit 1. Assume the receiver power from B is twice the received power from A. This can be represented by showing the received signal component from A as consisting of elements of magnitude 1 (+1,-1), and the received signal component from B as consisting elements of magnitude 2 (+2,-2)