Solve the following problem:
A DS spread spectrum system transmits at a rate of 1000 bits/s in the presence of a tone jammer. The jammer power is 20 dB greater than the desired signal, and the required Eb/J0 to achieve satisfactory performance is 10 dB.
a. Determine the spreading bandwidth required to meet the specifications.
b. If the jammer is a pulse jammer, determine the pulse duty cycle that results in worstcase jamming and the corresponding probability of error.