Communication Systems

Use this for “Broadcast FM swings 75 kHz with a 15 kHz tone. Find β and the bandwidth.”

Use this for “An AM envelope peaks at 1.5 V and dips to 0.5 V. Find the modulation index.”

Use this for “A radio with a 455 kHz IF is tuned to 1000 kHz. Find the LO and image frequencies.”

Use this for “A 2 Mb/s signal arrives with a 10 dB SNR in a 1 MHz bandwidth. Find Eb/N₀.”

Use this for “A BPSK link runs at Eb/N₀ = 9.6 dB. What is its bit error rate?”

Use this for “A 3 dB noise figure amplifier with 20 dB of gain feeds a 10 dB mixer. Find the noise figure of the pair.”

Use this for “A receiver has a noise factor of 2. Find its noise temperature.”

Use this for “A 3 kHz phone line has a 30 dB signal-to-noise ratio. Find its Shannon capacity.”

Use this for “Codewords of 1, 2, 3 and 3 bits are sent with probabilities 1/2, 1/4, 1/8, 1/8. Find the average length.”

Use this for “A binary symmetric channel flips each bit with probability 0.1. Find its capacity.”

Use this for “The (7, 4) Hamming code has minimum distance 3. Find its rate and the errors it corrects and detects.”