11-OtherLinearTechniques.rar - Differential PSK (DPSK)
Inexpensive
Quadrature Phase Shift Keying (QPSK)
Twice as spectrally efficient than BPSK
Offset QPSK (OQPSK)
reduce envelope variation
π/4 QPSK
reduces envelope variations to a lesser extent
than OQPSK can be noncoherently detected,2014-08-19 16:47:23,下载7次
3_Eshan_Nagrath_Research_Article_Mar_2011.rar - This Paper is concerned with the study of the performance of DPSK (differential phase shift keying)
Modulation Technique using AWGN(Additive white gaussian noise) channel. The DPSK has remarkable
features such as limited bandwidth and constant envelope, which are of importance for mobile communication
systems for providing the output according to our needs and requirement. In this study we evaluated the Bit
error rate performance of the CDMA system by designing the CDMA system using SIMULINK Tool of the
MATLAB software and study the performance characteristics of DPSK modulated CDMA system which are
helpful for raising the level of present day communication systems, In order to design our DPSK modulated
CDMA system we varied only modulation blocks of simple CDMA transmitter and receiver sections.,2014-08-19 16:41:24,下载5次