Threshold SNR calculation. A certain digital receiver system requires a SNR of -3 dB (power ratio) to be above threshold for proper operation. The system's bandwidth B is 80 kHz and the effective input noise temperature of the system is Tsys=1000 K. What is the minimum signal power PMIN at the system's input needed for the system to operate above threshold? Express your answer in both watts (numeric form) and dBm (dB relative to 1 mW). SYS

2-What is the maximum allowed frequency of the input information signal (modulator) in an AM system (DSB-LC) which has a bandwidth of 40kHz and a carrier frequency of 500kHz

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Analog communication lab solve all please

The modulating signal directly deviates the carrier's frequency in this angle modulation. Select your answer. Direct FM Indirect FM Indirect PM Direct PM

To transmit analog information using analog signal which modulation schemes can be used? Differentiate frequency and phase modulation implementation mechanisms.

In TRF receivers, the greater the number of tuned stages cascaded, the narrower the bandwidth. (A) True B) False Question 2 The following are the characteristics of tuned radio frequency receivers, except A Relatively high sensitivity B) For high-frequency applications The simplest designed radio receiver available D Limited to single-channel

Q1): Use the PCM method to convert the signal below into a digital signal by assuming fm = 1000 Hz and n- 3. 4 -5 0.5 1 1.5 2.5 3 3.5 4 4.5 5 Time(ms) Q2): Use the DPCM method to: 1. convert the signal below into a digital signal by assuming fm = 500 Hz and n = 3. 2. reconstruct discrete signal at the receiver end. 3. calculate the error between the sampled discrete signal at transmitter end and the reconstructed discrete signal at the receiver end. 3 2 -2 3 2 3 4 5 10 1, (HOA) apnadury Amplitude (volt)