Scenario description: assume you got a new wireless sensor device with circuit power consumption of p_elec = 0.015mw. frequency bandwidth (i. e. symbol rate) is 1mhz. you have a packet with 125 bytes to send. assume there is no other overhead, and you can ideally turn on and off the transmission without additional power cost. now you can choose using various data rates to transmit this packet, while maintaining the same ber at 0.0001 with the following assumption: using bpsk, the required tx amplifier power consumption of p_t =0.02mw; using qpsk, the required tx amplifier power consumption of p_t =0.05mw. receiver energy consumption is not a concern. questions: calculate the energy consumption (in unit of nj – nano-joule) of transmitting this packet, using bpsk and qpsk schemes, respectively. do you prefer slow bpsk transmission to save power, or to transmit quickly with qpsk and then sleep (3 point)?

You need to design a circuit that implements the functions in the following table: s0 s1 function0 0 a + 10 1 a – b1 0 a + b1 1 a – 1s0 and s1 are 1-bit control inputs to select the function of the circuit. inputs a and b are 4-bitnumbers in 2s complement form. the output is also a 4-bit number in 2s complement form.you are allowed to use only one ttl 7483 4-bit adder to implement all the functions. but anynumber of other components (except the adder) can be used.hint: design a combinational logic circuit to modify the input b and the “carry input” of theadder depending on the control inputs s0 and s1.important: lab grade will depend on the working of the circuit & will be checked of by your labinstructor.1. is the output valid for the following input combinations: a. s0 = 0, s1 = 0, a = 7, b = 3? b. s0 = 0, s1 = 1, a = 7, b = 3? c. s0 = 1, s1 = 0, a = -4, b = -5? d. s0 = 1, s1 = 1, a = -8, b = 6? 2. what is the range of inputs (for both a and b) that will produce the valid output for all the functions?