Title :
Minimization of detection of symbol-rate spectral lines by delay and multiply receivers
Author :
Reed, D.E. ; Wickert, M.A.
Author_Institution :
Dept. of Electr. Eng., Colorado Univ., Colorado Springs, CO, USA
fDate :
1/1/1988 12:00:00 AM
Abstract :
The detectability of the symbol rate of a digitally modulated signal by a delay and multiply receiver is investigated. Two signal pulse types are considered: Nyquist pulses and rectangular pulses. Since many digital transmission systems use rectangular pulse shapes, symbol rate-line detectability is considered for receivers optimized for rectangular pulses. For a receiver configuration that is reasonable for rectangular pulses, it is found that with a Nyquist pulse parameter α=0.25, the rate-line signal-to-noise ratio is down about 20 dB from that for a rectangular pulse signal
Keywords :
radio receivers; signal detection; Nyquist pulses; delay and multiply receiver; detection minimisation; digitally modulated signal; rectangular pulses; signal-to-noise ratio; symbol-rate spectral lines; Band pass filters; Circuits; Delay lines; Minimization; Power harmonic filters; Pulse modulation; Pulse shaping methods; Shape; Signal to noise ratio; Tin;
Journal_Title :
Communications, IEEE Transactions on