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BPSK Communication Systems in real life

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sherif123

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I want to know where the BPSK is used in real life systems. I mean the coherent systems which are based on PSK.
I know some systems that are based on FSK and Differential-PSK. I don't want those which are based on OFDM with BPSK or QPSK sub-carriers.

Thanks
 

Do you mean non-differentially coded BPSK (binary)? The differentially-coded version is usually needed.
On the other hand, often QPSK or some of its variants is prefered because it has the same performance with double spectral efficiency.

Z
 

OK thanks
But where is the BPSK used in real systems? or QPSK.
Maybe my information is not very good. Cannot be BPSK or QPSK used without being differentially-coded nor being DPSK?
 
Last edited:

sherif123 said:
OK thanks
But where is the BPSK used in real systems? or QPSK.
Maybe my information is not very good. Cannot be BPSK or QPSK used without being differentially-coded nor being DPSK?
Click to expand...

In GPS and more sattelite systems.
 

OK good.
Both satellite and GPS are sending data continuously not packets. Is there a BPSK/QPSK system working in packet mode (burst mode)?
 

GPRS (General Packet Radio Service) uses GMSK (Gaussian Minimum Shift Keying). This is (can be seen as) a variant of OQPSK (Offset QPSK) coherently detected.
Z
 

QPSK is used in HSDPA and HSDPA+. In actual the modulation scheme varies there from QPSK to 64QAM based on channel conditions.
 

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