[Discuss-gnuradio] Question about IF frequency to send

2011-08-31 Thread Delgado, Christopher
Hello, We’re implementing a CDMA base station wholly within the FPGA on the N210. I have a question regarding IF frequency. In the dsp_core_tx module the IQ data is going through some interpolation and then a cordic. Is the cordic used to upconvert to some IF before being sent to the DAC? If s

[Discuss-gnuradio] Receive Sensitivity and Transmit Leakage?

2011-08-02 Thread Delgado, Christopher
Have some questions regarding received signal levels and what seems like LO leakage on transmit side. We are using N210 with WBX (UHD driver). This issue seems to be pretty independent of carrier frequency. 1) Receive sensitivity - We're cabling in a CDMA2000 carrier (1.2288 MHz bandwidth) from