Consider a binary communications system that receives equally likely signals (b) s1(t) and s2(t) shown in Fig Q5b plus AWGN. Assume the receiving filter is a matched filter and that the noise power spectral density No is 1012 W/Hz. Compute the bit error probability of this system. (millivolts) sz(t) (millivolts) 0 123 (us) -1 t(us) 0123

A signal of bandwidth 4 kHz is samples at Nyquist rate and transmitted using PCM with uniform quantization. If the number of quantization levels L is increased from 64 to 256.Find the following: The number of bits sample in the old and new PCM systems. The change in SNR measured in dB. (improved or decreased, and by how many times). The transmission bandwidth before and after increasing the quantization levels. Find the percentage of change in the bandwidth.

2. Explain which of the following instructions are invalid? State the invalidation reason and give the correct form for invalid instructions: a. MOV DL,AX b. MOV ES,CX c. MOV [BX],[2000] d. MOV BX,[AX] e. MOV CL,[BL+200] f. MOV 1234,DX g. MOV CH,[BX+SI+300] h. MOV DS,[SI+DI-5] i. MOV [4500],1234 j. MOV 200,[300]

Please solve question and expand fully.