Center for Space Telemetering and Telecommunications Research: Program Review
Increase in data rate through TDRSS is achievable using a combination of higher order modulation schemes and higher symbol rates.
Horan, Stephen↗
Engineering topics
Horan, Sheila
Publications and source records attributed to Horan, Sheila.
Pulse Shaped Constant Envelope 8-PSK Modulation Study
This report provides simulation results for constant envelope pulse shaped 8 Level Phase Shift Keying (8 PSK) modulation for end to end system performance. In order to increase bandwidth utilization, pulse shaping is applied to signals before they are modulated. This report provides simulation results of power spectra and measurement of bit errors produced by pulse shaping in a non-linear channel with Additive White Gaussian Noise (AWGN). The pulse shaping filters can placed before (Type B) or after (Type A) signals are modulated. Three kinds of baseband filters, 5th order Butterworth, 3rd order Bessel and Square-Root Raised Cosine with different BTs or roll off factors, are utilized in the simulations. The simulations were performed on a Signal Processing Worksystem (SPW).
Tao, Jianping↗