Amplitude shift keying, Frequency Shift Keying, Binary Phase Shift Keying: Generation and Detection
In a binary ASK system over an AWGN channel, if the energy of symbol '1' is E_s and symbol '0' is represented by zero energy, what is the theoretical bit error probability?
In a binary FSK system with coherent detection, what is the minimum frequency separation Δf between the two tones to ensure orthogonality over a symbol duration T?
In digital modulation, how does increasing the modulation order (e.g., from 4-PSK to 8-PSK) affect the bit error rate (BER) under the same SNR?
A coherent BFSK system uses orthogonal frequencies. What is the minimum bit error probability in AWGN for equal energy signals?
In an 8-PSK system, how many bits are affected on average per symbol error if Gray coding is not used?
In non-coherent binary FSK, what causes the degradation in bit error rate compared to coherent FSK?
In M-ASK with M > 2, what limits the minimum distance between signal levels for fixed average power?
What is the peak-to-average power ratio (PAPR) concern in M-ASK compared to BPSK or BFSK?
In M-PSK, why does increasing M increase the bit error rate at fixed SNR?
In M-FSK systems, how does increasing M (number of frequencies) affect the bandwidth and orthogonality requirements?