Abstract
The effects of bandlimiting on the coherent detection of Phase-Shift Keying (PSK), Amplitude Shift Keying (ASK) and Frequency-Shift Keying (FSK) signals in the presence of white gaussian noise are investigated. By using the signal-to-noise ratio as the performance criterion, the degradation on this quantity is determined as a function of system bandwidth, carrier frequency and bit patterns. The average probability of the bit error for each case is computed. It is shown that the effect of aliasing can be neglected for the bandlimited PSK and ASK if the carrier frequency is greater than three times the bit rate. Also it is found that the bandlimited PSK system requires half as much energy to achieve the same performance as the bandlimited ASK system. Also it is found that the bandlimited FSK system performs better than the bandlimited ASK system if the separation of the two carrier tones of the FSK signal is less than three times the bit rate, other wise their performance is the same.
| Original language | English |
|---|---|
| Pages (from-to) | 369-376 |
| Number of pages | 8 |
| Journal | AEU - International Journal of Electronics and Communications |
| Volume | 26 |
| Issue number | 9 |
| State | Published - 1972 |
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering