Re: [Discuss-gnuradio] gr-lte chanel estimation

2015-07-03 Thread Johannes Demel
Hey Doug, > First one should be pretty easy for you: a couple of the blocks ask > for input "rxant", and the pre-decoder asks for both rxant and > N_ant. I scanned the source and looks like "1" will be an okay > value for both, but just out of curiosity, what is actual different > between rxant an

Re: [Discuss-gnuradio] gr-lte chanel estimation

2015-07-02 Thread Anderson, Douglas J.
: discuss-gnuradio-bounces+danderson=its.bldrdoc@gnu.org [discuss-gnuradio-bounces+danderson=its.bldrdoc@gnu.org] on behalf of Johannes Demel [uf...@student.kit.edu] Sent: Thursday, July 02, 2015 1:22 AM To: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] gr-lte chanel estimation Hey

Re: [Discuss-gnuradio] gr-lte chanel estimation

2015-07-02 Thread Johannes Demel
Hey Doug, This particular part of the flowgraph deals with reception of a 2 antenna transmitter. That implies that an Alamouti code is applied before transmission. Thus, for correct reception, it is necessary to perform the inverse Alamouti code operation. This is generally called Precoding. For d

[Discuss-gnuradio] gr-lte chanel estimation

2015-07-01 Thread Anderson, Douglas J.
Hi all, I'm working at putting together a flowgraph based on gr-lte. For the channel estimator hier block [1], it looks like there are two RS map generators, one for each of 2 "antenna ports". I only have one antenna connected to my USRP N210. Is this a problem? Do I still use 2 RS map generat