diff options
author | Thomas Tsou <tom@tsou.cc> | 2013-11-13 23:38:09 -0500 |
---|---|---|
committer | Thomas Tsou <tom@tsou.cc> | 2013-11-15 23:35:07 -0500 |
commit | e90a42becce19e9adcbf648d34fec5332cebc5ba (patch) | |
tree | dd384cb7d1352ffddb18e6844590e3cb1b9dac93 /Transceiver52M/USRPDevice.cpp | |
parent | 30421a7e252889efbd1941d5220d06cbf7161160 (diff) |
Transceiver52M: Add dual channel diversity receiver option
This patch add support for dual channel diversity on the receive
path. This allows two antennas two shared antennas to be used for
each ARFCN handling channel in the receiver. This configuration
may improvde performance in multi-path fading environments,
however, noise andpotential interference levels are increased due
to the higher bandwidth used.
The receive path is oversampled by a factor of four for a rate
of 1.083333 Msps. If the receive paths are tuned within a
maximum channel spacing (currently set at 600 kHz), then both
ARFCN frequencies are processed by each channel of the receiver.
Otherwise, the frequency shifted diversity path is disabled and
standard non-diversity operation takes place.
Diversity processing is handled by selecting the path with the
higheset energy level and discarding the burst on the second
path. Selection occurs on a burst-by-burst basis.
Signed-off-by: Thomas Tsou <tom@tsou.cc>
Diffstat (limited to 'Transceiver52M/USRPDevice.cpp')
-rw-r--r-- | Transceiver52M/USRPDevice.cpp | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/Transceiver52M/USRPDevice.cpp b/Transceiver52M/USRPDevice.cpp index e330bc3..e00d54e 100644 --- a/Transceiver52M/USRPDevice.cpp +++ b/Transceiver52M/USRPDevice.cpp @@ -59,8 +59,7 @@ const dboardConfigType dboardConfig = TXA_RXB; const double USRPDevice::masterClockRate = 52.0e6; -USRPDevice::USRPDevice(size_t sps, size_t) - : skipRx(skipRx) +USRPDevice::USRPDevice(size_t sps, size_t, bool) { LOG(INFO) << "creating USRP device..."; @@ -601,7 +600,7 @@ bool USRPDevice::setTxFreq(double wFreq) { return true;}; bool USRPDevice::setRxFreq(double wFreq) { return true;}; #endif -RadioDevice *RadioDevice::make(size_t sps, size_t chans) +RadioDevice *RadioDevice::make(size_t sps, size_t chans, bool diversity) { - return new USRPDevice(sps, chans); + return new USRPDevice(sps, chans, diversity); } |