Title :
Power spectrum of unbalanced NRZ and biphase signals in the presence of data asymmetry
Author :
Bishop, Dennis F. ; Million, Samson ; Nguyen, Tien M. ; Simon, Marvin K.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
The impact of data unbalance and asymmetry on the power spectral density of nonreturn-to-zero (NRZ) and biphase baseband modulations is presented. Previously reported results for this problem assumed an incorrect model for the shape and number of elementary pulse shapes that characterize an arbitrary random data stream and thus led to erroneous computations of these power spectra. This paper provides the correct analytical model and then use it to obtain theoretical power spectrum results that are in full agreement with those obtained from computer simulation
Keywords :
phase modulation; random processes; signal processing; spectral analysis; biphase baseband modulation; computer simulation; correct analytical model; data asymmetry; data unbalance; elementary pulse shapes; erroneous computations; incorrect mode; power spectral density; power spectrum; random data stream; unbalanced NRZ signals; Analytical models; Baseband; Laboratories; Optical signal processing; Probability; Propulsion; Pulse modulation; Pulse shaping methods; Shape; Space technology;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
