Questions on OQPSK

[rjohnson]

I saw the following in the the paper regarding traveling wave tube & nonlinear amps (page 7):

" ... we would always prefer O-QPSK [versus QPSK] if it were not for the cost of the receivers."

Does this just mean that an off-the-shelf OQPSK receiver is more expensive than a QPSK receiver, or are there additional complexities to the design & implementation of an OQPSK receiver versus a straight QPSK receiver which add cost (components and/or labor)?

Also, on somewhat of the same note, what are the benefits/disadvantages to OQPSK versus PI/4-QPSK?

Thanks!!

[gpi]

hi,

you don't specify which note you are referring to, nevertheless
could it refer to "offset"-IOTA pulse shaping?

try to google for the paper
OQAM/IOTA downlink air interface for umts hsdpa evolution

hope this helps

gian paolo