Existing integer-float converter didn't accomodate for the final
transceiver output converting to 8-bits. The resulting effect was
integer overflow above a certain signal input level dependent on RF
receive gain. Resolve by scaling to allow full input level range.
Signed-off-by: Tom Tsou <tom@tsou.cc>
Supported devices includes USRP N200/N210/USRP2, B200/B210, X300/X310.
Other Ettus devices are not supported due to bandwidth limitations.
There is no direct embedded device support at this time.
The UHD transceiver device operating rate is fixed at 6.25 Msps, which
interfaces with the UMTS chip rate of 3.84 Mcps through a combined
polyphase resampling and RRC pulse-shaping filterbank. The effective
oversampling factor is approximate 1.63 samples per symbol.
Tested against Agilent 89600 VSA for appropriate EVM and ACP values.
Signed-off-by: Tom Tsou <tom@tsou.cc>
Tom Tsou